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AAON

aaon · NASDAQ Industrials
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Ticker aaon
Exchange NASDAQ
Sector Industrials
Industry Construction
Employees 1001-5000
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FY2009 Annual Report · AAON
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AAON is a global leader in providing 

equipment with environmentally 

responsible designs. AAON utilizes 

extensive product knowledge and state 

of the art manufacturing to continuously 

provide a wide variety of energy 

efficient and earth friendly features to 

the dynamic marketplace. The success 

of our commitments can be seen in the 

consistent growth of our sales and the 

increasing profitability of the company.

COMpANy pROFiLe

OutdOOR AiR  
HANdLiNg uNitS

CONdeNSiNg 
uNitS

iNdOOR AiR HANdLiNg uNitS

RL SeRieS

CL SeRieS

H3 SeRieS

SA SeRieS

V3 SeRieS

RN SeRieS

CC SeRieS

ROOFtOp uNitS

M2 SeRieS

M3 SeRieS

F1 SeRieS

RQ SeRieS

CB SeRieS

RL SeRieS

RN SeRieS

RQ SeRieS

BOiLeR

CHiLLeRS

BL SeRieS

LL SeRieS AiR—CONdeNSed

LL SeRieS 
eVApORAtiVe—CONdeNSed

LC SeRieS AiR—CONdeNSed

AAON is engaged in the engineering, manufacturing, marketing and sales of air conditioning and heating equipment consisting 

Net Increase (Decrease) in Cash

of rooftop units, chillers, air-handling units, make-up air units, heat recovery units, condensing units, commercial self-contained 

units and coils. Since the founding of AAON in 1988, AAON has maintained a commitment to design, develop, manufacture and 

deliver heating and cooling products to perform beyond all expectations and demonstrate the value of AAON to our customers. 

AAON provides specific and unique solutions for individual customer requirements.

Ratio Analysis 
Return on Average Equity 

Return on Average Assets 

Pre-Tax Income on Sales 

Net Income on Sales 

Total Liabilities to Equity  
Quick Ratio2
Current Ratio 
Year-End Price Earnings Ratio1

1 Reflects 3-for-2 stock split in August 2007 
2 Cash, cash investments + receivables/current liabilities.

ANNuAl RepORT

FiNANCiAL HigHLigHtS

2009

2008

2007

2006

2005

Income Data ($000)
Net Sales

Gross Profit 

Operating Income

Interest Expense

Interest Income 
Depreciation 

Pre-Tax Income 

Net Income 

Earnings Per Share 

(Basic)1
(Diluted)1 

Balance Sheet ($000) 
Working Capital   

Current Assets 

Net Fixed Assets

Accumulated Depreciation

Cash & Cash Investment

Total Assets 

Current Liabilities 

Long-Term Debt 

Stockholders’  Equity 
Stockholders’ Equity per Diluted Share1
Funds Flow Data ($000) 
Operations 

Investments 

Financing 

$245,282

$67,545

$43,754

$9

$71
$9,061

$43,892

$27,721

$1.61
$1.60

$65,354

$96,240

$59,896

$80,567

$25,639

$156,211

$30,886

$0

$117,999

$6.85

$45,205

$(9,639)

$(10,101)

$25,370

25.8%

17.7%

17.9%

11.3%

0.3

1.9

3.1

12

$279,725

$67,176 

$43,388 

 $71 

 $27 
 $9,412 

 $44,068 

 $28,589 

$262,517 

$57,369 

 $35,666 

$10 

$8 
$9,665 

 $35,343 

$23,156  

 $1.63 
$1.60 

 $1.24 
 $1.22 

$40,600 

$80,118 

$60,550 

 $72,269 

 $269 

 $140,743 

$39,518  

$121 

 $96,522 

$5.61 

$33,447 

$(9,593)

$(24,460)

$(610)

29.8%

20.3%

15.8%

10.2%

0.5

1.0

2.0 

13 

$38,788  

$76,295 

$60,770 

$63,579 

$879 

$137,140  

$37,507 

$239  

$95,420  

$5.29 

$31,247 

$(10,751) 

$(20,036)

$591 

24.8%

16.9%

13.5%

8.8%

0.4 

1.1

2.0

16 

$231,460 

$43,890 

$25,831

$81 

$24 
$9,146 

 $26,198 

 $17,133   

$0.93  
$0.90 

$36,356

$70,759 

$59,222 

$54,182 

$288 

$130,056 

$34,403  

 $0  

$91,592  

$4.95 

 $19,428 

$(16,781) 

$(3,333)

$(549)

20.0%

13.2%

11.3%

7.4%

0.4

1.1 

2.1

19 

$185,195  

$35,291 

$17,814 

$16 

$67
$8,503  

 $18,332 

 $11,462  

$0.62 
$0.60  

$33,372  

$62,950 

$50,581  

 $45,062 

$1,837  

$113,606 

$29,578  

$59 

$79,495 

$4.33 

$11,966 

 $(8,189) 

 $(4,200) 

$(157)

15.2%

10.1%

9.9%

6.2%

0.4

1.2 

2.1 

20 

2009 
 
 
  
 
 
 
  
 
 
 
 
 
 
 
 
 
 
deAR SHAReHOLdeR,

Our operating and net income margins 

We continued to focus on improving our manufacturing efforts and on providing our 

customers with products that delivered reliability, quality, durability, serviceability and 

high  efficiency. These  efforts,  combined  with  the  diversification  of  our  product  line 

and our customer mix, served to cushion the severely negative effects of the economy 

reached record levels last year, while our 

last year.

financial position remained debt-free and 

highly liquid, despite a decline in our top 

line performance. We continued to benefit 

In  2009,  total  sales  declined  12.3%  to  $245.3  million  from  $279.7  million.  Gross 

profits in 2008 were $67.2 million (24.0% of sales) and, despite lower sales in 2009, 

they  improved  slightly  to  $67.5  million  (27.5%  of  sales).  SG&A  expenses  remained 

relatively high, at $23.8 million in both 2009 and 2008, but increased as a percentage of 

sales from 8.5% in 2008 to 9.7% in 2009 due to the reduction in sales, which reflected 

increased warranty reserves and various promotional expenses connected with new 

from stable raw material and component 

product introductions.

pricing while our product pricing 

remained firm. The Company witnessed an 

impressive improvement in productivity 

Our  operating  income  increased  slightly  to  $43.8  million  from  $43.4  million  and 

margins widened to 17.8% of sales from 15.5% of sales. Net income dipped 3.1% to 

$27.7 million (11.3% of sales) from $28.6 million (10.2% of sales). Earnings per share 

were  $1.60  in  both  2009  and  2008.  The  per  share  calculations  are  based  upon  17.3 

million diluted shares outstanding in 2009 and 17.9 million diluted shares in 2008. 

as manufacturing and marketing 

CANAdiAN pLANt CLOSiNg

efforts continued to excel. All of 

these factors had a beneficial 

impact on gross margins, which 

widened once again.

In September 2009, we closed our Canadian facility. We had purchased these operations 

in May 2004 at a cost of $1.8 million. Later that year, we bought additional property 

at  a  cost  of  $1.1  million,  in  order  to  relocate,  enlarge  and  expand  our  production 

capabilities. The Canadian production has since been moved to our domestic facilities 

in Tulsa, Oklahoma, and Longview, Texas. Since the inception of its business, we have 

realized tax benefits from the losses incurred in Canada and, in the first nine months of 

2009, this operation contributed sales of $3.5 million and lost $0.8 million or $0.05 per 

diluted share. The building and land are now up for sale and we expect the transaction 

to be completed during this year.

StRONg FiNANCiAL CONditiON

Our financial condition at December 31, 2009, remained strong. Total current assets 

were  $96.2  million  with  a  current  ratio  of  3:1.  Capital  expenditures  reached  $9.8 

million, which was approximately the amount spent in 2008. We repurchased 165,117 

shares of common stock at a cost of $3.1 million and made dividend payments of $5.9 

million. Yet we maintained a strong liquid position, and with no long-term debt.

“Our operating 

and net income 

margins 

reached record 

levels last 

year, while 

our financial 

position 

remained debt-

free and highly 

liquid, despite 

a decline in 

our top line 

performance.”

President’s LetterANNuAl RepORT

“Our financial 

condition at 

December 31, 

2009, remained 

strong. Total 

current assets 

were $96.2 

Over the past decade we instituted three common stock repurchase programs. In 1999 

the  National  Society  of  Professional  Engineers  (NSPE).  In 

remainder of our expenditures will be devoted to machinery 

and 2002, two of these programs totalled 3.0 million shares at a cost of $36 million. In 

announcing  the  award,  Richard  Buchanan,  Chairman  of  the 

purchases  including  metal  fabricating  equipment.  At  the 

November 2007 the Board of Directors authorized the third stock buyback of up to 10% 

New  Product  Award  committee  said,  “this  prestigious  award 

end  of  2009,  our  machinery  capabilities  could  accommodate 

(approximately 1.8 million shares) of the outstanding common stock. Through 2008 we 

serves  to  not  only  recognize  the  engineering  that  goes  into 

annual  volume  of  up  to  $350-400  million  depending  on  our  

had repurchased almost 1.7 million shares at a total cost of $33.7 million. During the 

these new products, but also the forward-thinking ability and 

product mix.

past  year  we  acquired  an  additional  25,546  shares  and  we  purchased  10,000  shares  of 

initiative of the companies who are bringing these products to 

stock from certain directors of the Company and 129,571 shares from AAON’s 401(k) 

light.”

New pROduCtS

savings and investment plan. We funded these stock buybacks out of our cash flow from 

At the outset of AAON’s business 22 years ago, the first products 

operations. We believe our sizeable cash flow can best be utilized by repurchasing our 

In August, Standard and Poor’s Index Services announced that 

manufactured  were  rooftop  unitary  units  with  2-10  ton 

common stock at prices that, we believe, do not reflect AAON’s true value.

AAON, Inc. would be added to the S&P Small Cap 600 GICS 

capacity, serving the commercial and industrial markets. This 

Building Products Sub-Industry index. Standard and Poor’s is 

market segment has traditionally been highly competitive due 

Return on average equity is a measure of how successfully a company uses reinvested 

the  world’s  foremost  provider  of  independent  credit  ratings, 

to the significant number of companies operating in this size 

earnings to generate additional earnings. It is used as a general indication of the company’s 

indices, risk evaluation, investment research and data.

range. Over the next two decades, we opted to concentrate our 

financial efficiency. In 2009 our return on average equity was 25.8% as compared with 

manufacturing efforts on higher tonnage units (10-230 tons). 

29.8% a year earlier. Total shareholders’ equity advanced 22% to $118.0 million or $6.85 

Finally, in October, and for the third consecutive year, AAON 

While these markets are far smaller, there is less competition, 

per share from $96.5 million or $5.61 per share in 2008.

was  selected  to  the  Forbes  200  Best  Small  Companies  list, 

which allows us greater pricing flexibility.

million with a 

tHe COppeR Hedge

ranking 58th. Inclusion on the Forbes list requires companies 

to meet a series of financial benchmarks, including return on 

We  have  grown  significantly  since  then,  in  size  and  also  in 

current ratio 

of 3:1. Capital 

expenditures 

reached $9.8 

million, 

which was 

Traditionally,  we  have  entered  into  cancellable  purchase  contracts  for  all  of  our 

equity, sales growth and profit growth over the past year and 

experience. We have built a solid manufacturing and financial 

commodity needs. Since the fourth quarter of 2008, due to a significant decline in the 

also over five years. The Company was also previously honored 

base,  while  offering  a  large  diversity  of  HVAC  products.  We 

price of commodities, we also entered into non-cancellable contracts, mainly for copper. 

in this list for three consecutive years from 2000 to 2002.

manufacture  a  complete  line  of  semi-custom  and  custom 

As  economic  conditions  continued  to  worsen,  one  of  our  main  suppliers  of  copper 

encountered some financial difficulties. Fearful that our contracts could not be fulfilled, 

CApitAL expeNdituReS

products  which  include  rooftop  units,  air  handling  units, 

condensing  units,  chillers,  heat  recovery  units,  commercial 

we entered into a derivative instrument that re-assigned the rights of the non-cancellable 

We continue to pursue our commitment to expand our plant 

self-contained units and coils. In addition, we have begun to 

contract to a large financial institution. The increase in the price of copper through the 

and machinery capacity in order to meet the demands of our 

witness  increased  demand  for  our  geothermal  water-cooled 

last half of 2009 beneficially impacted our financial results, adding approximately $1.4 

future  growth.  In  2009  our  capital  expenditures  were  $9.8 

equipment. We continue to enjoy growing acceptance of our 

million to net income or $0.08 per share.

million. We spent $3.0 million on the purchase of machinery 

technologically innovative, highly reliable, product lines.

and  equipment,  with  the  remainder  directed  to  plant  and 

We continue to have a derivative position, which settles on a monthly basis, as we enter 

building  additions  and  renovations.  A  significant  portion 

Fortified  by  our  manufacturing  experience  and  financial 

this year. We are locked in at a price of $2.38 per pound through December 2010 for a 

of  these  expenditures  was  devoted  to  completing  programs 

strength,  AAON  has  once  again  focused  its  attention  on  the 

portion of our expected usage. Since the derivative instrument can be settled at any time, 

initiated in 2008.

we closely monitor the price of the commodity.

2-10  ton  markets,  bringing  the  same  features  which  enabled 

us to gain a strong foothold in larger tonnage products to the 

approximately 

ReCOgNitiONS

For 2010, depending on the business outlook, we have budgeted 

smaller sized equipment.

capital expenditures of $7-8 million. Once our incoming order 

the amount spent 

in 2008.”

It is said that success has many suitors, but failure goes to the dance alone. Fortunately, 

rate begins to firm, signaling an improving business outlook, we 

In  January  of  2010,  we  introduced  our  redesigned  6-10  ton 

our  dance  card  was  quite  full  this  past  year.  In  June,  the  Company’s  Digital  Precise 

will expand our physical capacity including a new warehouse 

unitary products and are just now rolling out our newly updated 

Air Control (D-PAC) rooftop unit was recognized as the 2009 Product of the Year by 

and parts department at an estimated cost of $3-4 million. The 

2-5 ton units. These products will have inner and outer sheet 

2009tHe ONgOiNg SuCCeSS OF OuR COMpANy CAN           Be diReCtLy AttRiButed tO OuR eMpLOyeeS.

ANNuAl RepORT

September
Purchase of John Zink Air 
Conditioning Division.

September
Purchase of John Zink Air 
Conditioning Division.

December
December
Formed AAON Coil Products, a Texas Corporation, 
Formed AAON Coil Products, a Texas Corporation, 
as a subsidiary to AAON, Inc. (Nevada) and 
as a subsidiary to AAON, Inc. (Nevada) and 
purchased coil making assets of Coils Plus.
purchased coil making assets of Coils Plus.

March
Purchase of property with 26,000 
square foot building adjacent to 
AAON Coil Products plan in Longview, 
Texas. Issued a 10% stock dividend.

March
Purchase of property with 26,000 
square foot building adjacent to 
AAON Coil Products plan in Longview, 
Texas. Issued a 10% stock dividend.

Spring
AAON purchased, renovated 
and moved into a 184,000 
square foot plant in Tulsa, 
Oklahoma.
Introduced a new product line of 
rooftop heating and air 
conditioning units 2-140 tons.

Spring
AAON purchased, renovated 
and moved into a 184,000 
square foot plant in Tulsa, 
Oklahoma.
Introduced a new product line of 
rooftop heating and air 
conditioning units 2-140 tons.

September
One-for-four reverse stock 
split. Retired $1,927,000 
of subordinated debt.

September
One-for-four reverse stock 
split. Retired $1,927,000 
of subordinated debt.

September
Completed expansion of the 
Tulsa facility to 332,000 
square feet.

April
September
AAON received 
Completed expansion of the 
U.S. patent for 
Tulsa facility to 332,000 
Blower Housing 
square feet.
assembly.

October
U.S. patent granted to AAON for air 
conditioner with energy recovery 
heat wheel.

October
U.S. patent granted to AAON for air 
conditioner with energy recovery 
April
heat wheel.
AAON received 
U.S. patent for 
Blower Housing 
assembly.

Spring
Completed Tulsa, 
Oklahoma, and Longview, 
Texas, plant additions 
yielding a total exceeding 
one million square feet.

Spring
Completed Tulsa, 
Oklahoma, and Longview, 
Texas, plant additions 
yielding a total exceeding 
one million square feet.

Fall
Expanded rooftop product line 
to 230 tons. Introduced evaporative 
condensing energy savings feature. 
3-for-2 stock split.

Fall
Expanded rooftop product line 
to 230 tons. Introduced evaporative 
condensing energy savings feature. 
3-for-2 stock split.

May
Purchase of the assets of 
Air Wise, of Mississauga, 
Ontario, Canada.

May
Purchase of the assets of 
Air Wise, of Mississauga, 
Ontario, Canada.

June
3-for-2 stock split.

June
3-for-2 stock split.

July
AAON added as a 
member of the Russell 
2000® Index.

July
AAON added as a 
member of the Russell 
2000® Index.

November
Introduction of light 
commercial/residential 
product lines.

November
Introduction of light 
commercial/residential 
product lines.

June
Initiation of a semi-annual cash 
dividend for AAON shareholders.

June
Initiation of a semi-annual cash 
dividend for AAON shareholders.
March
Modular air handlerproduct 
extended to 50,000 CFM

March
Modular air handlerproduct 
extended to 50,000 CFM

May
AAON increases dividend 
payment by 13%

May
AAON increases dividend 
payment by 13%

June
• AAON Named to the Fortune 
  40: Best Stocks to Retire On
• National Society of Professional 
  Engineers Award AAON 2009 
  Product of the Year

June
• AAON Named to the Fortune 
  40: Best Stocks to Retire On
• National Society of Professional 
  Engineers Award AAON 2009 
  Product of the Year

October
October
AAON Listed in Forbes ‘200 
AAON Listed in Forbes ‘200 
Best Small Companies’
Best Small Companies’
December
December
AAON rings closing 
AAON rings closing 
bell atNASDAQ
bell atNASDAQ

August
August
AAON added to Standard & 
AAON added to Standard & 
Poor’s SmallCap 600 Index
Poor’s SmallCap 600 Index

88

’88’89’90’91’92 ’93’94’4495’96’97’98’899

’88’89’90’91’92 ’93’94’4495’96’97’98’899

98
97

92
91

93
92

95
94

91
90

94
93

96
95

99
98

90
89

89
88

97
96

99

December
Listed on NASDAQ Small 
Cap—Symbol “AAON.”

December
Listed on NASDAQ Small 
Cap—Symbol “AAON.”

November
Listed on the 
NASDAQ National 
Market System.

January
January
Introduced a desiccant heat 
Introduced a desiccant heat 
recovery wheel option available 
recovery wheel option available 
on all AAON rooftop units.
on all AAON rooftop units.

November
Listed on the 
NASDAQ National 
Market System.

November
November
AAON yearly shipments exceed 
AAON yearly shipments exceed 
$100 million. Received U.S. patent 
$100 million. Received U.S. patent 
for Dimpled Heat Exchanger Tube.
for Dimpled Heat Exchanger Tube.

00

’00’01’02’03 ’04’4405 ’06’6607

’0808
’00’01’02’03 ’04’4405 ’06’6607

07
06

03
02

06
05

01
00

02
01

07
August
3-for-2 
stock split

’0808
’09’

09
August
3-for-2 
stock split

09

’09’

04
03
05
04
July
July
Started production of 
Started production of 
polyurethane foam-filled 
polyurethane foam-filled 
double-wall construction 
double-wall construction 
panels for rooftop and chiller 
panels for rooftop and chiller 
products using newly purchased 
products using newly purchased 
manufacturing equipment.
manufacturing equipment.

October
AAON listed in Forbes’ 200 
Best Small Companies

October
AAON listed in Forbes’ 200 
Best Small Companies

July
AAON products receive Dealer 
Design Awards from ACHR News

Summer
Became a publicly traded company 
with the reverse acquisition of Diamond 
Head Resources (now “AAON, Inc.”), 
a Nevada corporation.

Summer
Became a publicly traded company 
with the reverse acquisition of Diamond 
Head Resources (now “AAON, Inc.”), 
a Nevada corporation.

August
AAON, an 
Oklahoma corporation, 
was founded.

August
AAON, an 
Oklahoma corporation, 
was founded.

Spring
AAON Coil Products purchased, 
renovated and moved into a 110,000 
square foot plant in Longview, Texas.

Spring
AAON Coil Products purchased, 
renovated and moved into a 110,000 
square foot plant in Longview, Texas.

December
Purchased 40 acres with 
457,000 square foot plan 
and 22,000 square foot 
office space located across 
from Tulsa facility.

December
Purchased 40 acres with 
457,000 square foot plan 
and 22,000 square foot 
office space located across 
from Tulsa facility.

October
AAON, listed in 
FORBES Magazine’s 
“Hot Shots 200 Up & Comers.”

October
AAON, listed in 
FORBES Magazine’s 
“Hot Shots 200 Up & Comers.”
Fall
Industry introduction of the 
modular air handler and 
chiller products.

Fall
Industry introduction of the 
modular air handler and 
chiller products.

April 
April 
AAON introduces factory 
AAON introduces factory 
engineered and assembled 
engineered and assembled 
packaged mechanical
packaged mechanical
room, which includes a 
room, which includes a 
boiler and all piping and 
boiler and all piping and 
pumping accessories.
pumping accessories.

August
August
AAON received U.S. Patent 
AAON received U.S. Patent 
for Plenum Fan Banding.
for Plenum Fan Banding.

July
AAON products receive Dealer 
Design Awards from ACHR News
October
• AAON rings opening 
  bell at NASDAQ
• AAON voted “Most Valuble 
  Product” and “Product of 
  the Year” by Consulting-
  Specifying Engineer 
  Magazine
• AAON listed in Forbes’ 
  200 Best Small Companies

October
• AAON rings opening 
  bell at NASDAQ
• AAON voted “Most Valuble 
  Product” and “Product of 
  the Year” by Consulting-
  Specifying Engineer 
  Magazine
• AAON listed in Forbes’ 
  200 Best Small Companies

metal walls filled with foam, making composite construction 

of  production,  we  will,  understandably,  incur  introductory 

The American Recovery and Reinvestment Act of 2009 provides a tax 

for the cabinets. Similar to our competitors, we formerly used 

marketing and training costs. We expect these factors to have a 

credit  for  geothermal  installations  and  helps  to  reduce  the  payback 

a single sheet metal panel with a fiberglass inner liner for our 

negative impact on our gross margins, but the additional sales 

period. This tax credit, along with our unique cabinet design and high 

cabinet construction, which was inferior to our new, stronger 

should modestly benefit our net income. The 2-10 ton segment 

operating efficiency, has led to an increase in our geothermal sales of 

and  better  insulated  composite  panels.  In  addition,  these 

is  quite  large,  contributing  as  much  as  55-60%  of  the  total 

approximately 300% from 2008 to 2009.

products  will  be  manufactured  with  our  direct  drive  blower 

unitary rooftop market, which we estimate to be approximately 

assemblies that operate without drive belts, which eliminates 

$2.0-2.2 billion annually. Undoubtedly, our decision to expand 

SALeS RepReSeNtAtiVe peRFORMANCe

the need to adjust or replace fan belts. These assemblies also 

into this market will involve some significant near-term costs. 

Once  again,  our  sales  representatives  performed  exceedingly  well, 

operate  with  our  airfoil  backward  curved  fan  that  is  much 

On a longer term basis though, this market segment offers us 

particularly in the face of a difficult economic climate. At the end of 

“We continue to pursue our 

commitment to expand our 

plant and machinery capacity 

in order to meet the demands 

more efficient than the traditional belt driven forward curved 

excellent growth potential.

fan system. We will continue to offer the customer the ability 

to add certain options to the units. Many other companies are 

geOtHeRMAL

2009, our network consisted of 106 offices in all 50 states and Canada, 

and contributed approximately 95% to our total sales. Our market share 

continues to expand, aided by the diversification of our customer mix. 

of our future growth. In 2009 

our capital expenditures were 

able to “mass customize” their products, yet they choose not to, 

Geothermal  units,  also  known  as  geo-exchange,  ground-

We witnessed good demand in such end markets as education, health 

opting to keep their production methods more standardized, 

source or water-source heating and cooling units, substantially 

care and government and municipal buildings, which partially offset 

thereby enabling them to operate in the higher volume, lower 

reduce electricity consumption in buildings by harnessing the 

the negative tone in the commercial, industrial and retail sectors. The 

priced market segments.

nearly constant natural temperature of the earth or a body of 

success of our product line diversification through the introduction 

$9.8 million.”

In order to establish AAON in this crowded arena, we expect 

The payback for geothermal systems historically ranged from 

sales representatives. We believe they will continue to be a significant 

to competitively price our base unit. During the first full year 

two to 10 years, depending on the energy usage of the building. 

factor in our future growth.

water and exchanging that energy to heat or cool the building. 

of new innovative products is directly attributable to the efforts of our 

2009ANNuAl RepORT

“Fortified by our 

manufacturing 

experience 

and financial 

strength, AAON 

has once again 

focused its 

attention on the 

2-10 ton markets, 

bringing the 

same features 

which enabled us 

to gain a strong 

foothold in larger 

tonnage products 

to the smaller 

sized equipment.”

OuR eMpLOyeeS

on preventative care. Our first year using this as our sole health 

has  enabled  the  Company  to  diversify  both  its  manufacturing 

Like many companies with reduced demand in 2009, we were faced with the need to 

plan offering performed so well that we doubled the Company 

and customer mix. The response from our customers has been 

balance our employment costs with production requirements while retaining the talented 

matching  contribution,  increased  the  wellness  incentive  by 

excellent.  We  will  continue  to  expend  the  capital  necessary  to 

and capable personnel who enable this organization to grow and thrive. Our solutions 

160%, lowered the maximum out of pocket amount by 45%-70% 

enlarge our machinery and manufacturing capacity as business 

focused  on  reductions  through  attrition  and  reduced  work  schedules.  We  proactively 

for nearly all covered employees and introduced a preventative 

conditions warrant.

communicated  with  our  personnel  regarding  the  economic  environment  facing  the 

medication program. Nearly all covered employees have seen the 

Company and sought their input in addressing our reduced production requirements. 

total cost of health care drop since changing from a traditional 

The challenges that confronted us during the past year could not 

This resulted in some postponed maintenance work being completed by manufacturing 

PPO plan, while wellness indicators have improved. By focusing 

have  been  met  without  the  cooperation  and  confidence  of  our 

personnel along with numerous unpaid days off being used through a more generous 

on prevention and wellness, we have seen improvements in blood 

customers, sales representatives and shareholders, as well as the 

attendance policy. We believe that this flexible and inclusive means of addressing our 

pressure, cholesterol, blood sugar levels and smoking rates, while 

loyalty of our committed employees, all of whose names appear 

reduced manufacturing demands has allowed us to retain our most skilled personnel 

simultaneously reducing name-brand prescription usage. Giving 

at the end of this report. These continuing efforts augur well for 

and will enable us to respond to opportunities arising in the future.

employees more direct control over their health-care dollars has 

AAON’s future growth.

Since our founding, we have distributed 10% of pre-tax profits equally to all personnel at 

This  plan  design  is  expected  to  benefit  employees  through 

Sincerely,

an operating subsidiary who worked from the beginning of a quarter through the end of 

improved health while keeping health care costs competitive for 

the quarter. Throughout this challenging employment period, our long standing “Profit 

the Company and its shareholders.

Sharing” arrangement has rewarded employees with an equal portion of the profits of the 

subsidiary for which they work and provided an immediate reward for maintaining the 

We  continue  to  carefully  monitor  our  personnel  situation  in 

Norman H. Asbjornson

subsidiary’s profitability. For a long-term focus, our employees now own more than 3% 

light of economic developments. Our employees are a long-term 

President & CEO

of the Company’s outstanding stock through the 401(k) plan which allows employees to 

investment  in  skills,  talent  and  knowledge  and  we  intend  to 

April 14, 2010

made our employees more health-conscious and cost-conscious. 

benefit, along with other shareholders, from share appreciation. All company shares in 

remain cautious about any dramatic changes that could hinder 

the 401(k) plan are purchased on the open market, using either cash contributions from 

our  ability  to  respond  quickly  to  market  opportunities.  We 

the Company, dividends received from company stock or cash from prior divestitures of 

believe that our approach to personnel will allow us to capitalize 

company stock in the plan. Shares in the plan are later sold to the Company and retired if 

upon  changing  market  conditions  and  maximize  shareholder 

participants diversify their holdings or leave the plan. This program improves retirement 

value.

preparedness and encourages employee longevity through a six-year vesting structure. 

We believe that the combination of these two incentive structures aligns the interests of 

OutLOOk

our employees with those of our shareholders in a manner designed to improve capital 

The  economic  malaise  which  began  in  late  2008  continues  to 

appreciation and profitability.

grip our industry. While the near term outlook remains clouded, 

we  are  bolstered  by  the  significant  strides  the  Company  has 

Our  emphasis  on  individual  responsibility  and  long-term  planning  also  appears  in 

made  in  our  manufacturing  capabilities  and  financial  stability. 

our  health  plan  design.  We  are  in  our  second  year  of  offering  only  a  high-deductible 

We have broadened our product line through the introduction 

health plan along with matching contributions to health savings accounts and wellness 

of a number of new, technologically innovative products directly 

incentives in conjunction with our nearly five-year-old on-site clinics which are focused 

addressing our major industry concern: energy efficiency. This 

2009UNITeD STATeS
SeCUrITIeS AND exChANge COmmISSION
Washington, D.C. 20549

FOrm 10-K

[3]

[   ]

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2009
or
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _____________________________ to _____________________________

Commission file number:  0-18953

AAON, INC.
(Exact name of registrant as specified in its charter)

Nevada
(State or other jurisdiction
of incorporation or organization)

2425 South Yukon, Tulsa, Oklahoma
(Address of principal executive offices)

87-0448736
(IRS Employer
Identification No.)

74107
(Zip Code)

tABLe OF CONteNtS

iteM NuMBeR ANd CAptiON 

pAge NuMBeR

pARt i

1.  Business. 

1A. Risk Factors. 

1B. unresolved Staff Comments. 

2.  properties. 

3.  legal proceedings. 

4.  Submission of Matters to a Vote of Security Holders. 

Registrant’s telephone number, including area code:  (918) 583-2266

pARt ii

Securities registered pursuant to Section 12(g) of the Act:

Common Stock, par value $.004
(Title of Class) 
Rights to Purchase Series A Preferred Stock
(Title of Class)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. 

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act. 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of 

the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant 
was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. 

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site,  
if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during  
the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

q  Yes  q No  

3

q  Yes  q No  

3

3
q  Yes  q  No

q  Yes  q  No
3
q  Not Applicable

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained 
herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements 
incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.   

3
q  

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer 

or a smaller reporting company (as defined in Rule 12b-2 of the Securities Exchange Act of 1934). 

Large accelerated filer  q                    Accelerated filer  q                    Non-accelerated filer  q                    Smaller reporting company  q         

3

Indicate by check mark whether the registrant is a shell company (as defined by Rule 12b-2 of the Act.) 

q  Yes  q  No

3

  The aggregate market value of the common equity held by non-affiliates computed by reference to the closing price of registrant’s common  
stock on the last business day of registrant’s most recently completed second quarter (June 30, 2009) was $341.8 million.

  As of February 25, 2010, registrant had outstanding a total of 17,185,037 shares of its $.004 par value Common Stock.

5.  Market for Registrant’s Common equity, Related Stockholder  
  Matters and Issuer purchases of equity Securities. 

6.  Selected Financial Data. 

7.  Management’s Discussion and Analysis of Financial Condition 
     and Results of Operations. 

7A. Quantitative and Qualitative Disclosures About Market Risk. 

8.  Financial Statements and Supplementary Data. 

9.  Changes in and Disagreements with Accountants on  

Accounting and Financial Disclosure. 

9A. Controls and procedures. 

9B. Other Information. 

pARt iii

10.  Directors, executive Officers and Corporate Governance. 

11.  executive Compensation. 

12.  Security Ownership of Certain Beneficial Owners and  
  Management and Related Stockholder Matters. 

13.  Certain Relationships and Related Transactions. 

14.  principal Accountant Fees and Services. 

  Portions of registrant’s definitive Proxy Statement to be filed in connection with the Annual Meeting of Stockholders to be held May 25, 2010, 
are incorporated into Part III.

15.  exhibits and Financial Statement Schedules. 

DOCUMENTS INCORPORATED BY REFERENCE

pARt iV

1 

4

5

6

6

6

7

9

10

17

18

19

19

20

21

21

21

21

22

23

1

 
 
 
 
 
 
   
 
 
pARt 1

iteM 1. BuSiNeSS.

geNeRAL deVeLOpMeNt ANd deSCRiptiON OF BuSiNeSS

AAON, Inc., a Nevada corporation, was incorporated on August 18, 1987. Our subsidiaries include AAON, Inc., an Oklahoma corporation, AAON 
Coil Products, Inc., a Texas corporation, AAON Canada, Inc., an Ontario corporation and AAON Properties, Inc., an Ontario corporation. AAON 
Properties is the lessor of property in Burlington, Ontario, Canada, to AAON Canada. Unless the context otherwise requires, references in this 
Annual Report to “AAON,” the “Company”, “we,” “us,” “our” or “ours” refer to AAON, Inc., and our subsidiaries.

We  closed  our  manufacturing  operations  and  reclassified  our  Canadian  facility  as  held  for  sale  in  September  2009.  The  products  previously 
manufactured at the Canadian facility will be produced by the Tulsa, Oklahoma, and Longview, Texas, facilities in the future.

We are engaged in the manufacture and sale of air-conditioning and heating equipment. Our products consist of rooftop units, chillers, air-handling 
units, make-up air units, heat recovery units, condensing units, commercial self contained units and coils.

pROduCtS ANd MARketS

Our  products  serve  the  commercial  and  industrial  new  construction  and  replacement  markets.  To  date  our  sales  have  been  primarily  to  the 
domestic market. Foreign sales accounted for less than 5% of our sales in 2009.

Our rooftop and condenser markets consist of units installed on commercial or industrial structures of generally less than 10 stories in height. Our 
air-handling units, commercial self contained units, chillers, and coils are applicable to all sizes of commercial and industrial buildings.

The size of these markets is determined primarily by the number of commercial and industrial building completions. The replacement market 
consists of products installed to replace existing units/components that are worn or damaged. Historically, approximately half of the industry’s 
market has consisted of replacement units.

The commercial and industrial new construction market is subject to cyclical fluctuations in that it is generally tied to housing starts, but has a lag 
factor of 6-18 months. Housing starts, in turn, are affected by such factors as interest rates, the state of the economy, population growth and the 
relative age of the population. When new construction is down, we emphasize the replacement market.

Based on our 2009 level of sales of $245 million, we estimate that we have a 13% share of the rooftop market and a 1% share of the coil market. 
Approximately  45%  of  our  sales  now  come  from  new  construction  and  55%  from  renovation/replacements.  The  percentage  of  sales  for  new 
construction vs. replacement to particular customers is related to the customer’s stage of development. 

We purchase certain components, fabricate sheet metal and tubing and then assemble and test the finished products. Our primary finished products 
consist of a single unit system containing heating, cooling and/or heat recovery components in a self-contained cabinet, referred to in the industry 
as “unitary” products. Our other finished products are chillers, coils, air-handling units, condensing units, make-up air units, heat recovery units 
and commercial self-contained units. 

We offer four groups of rooftop units. Our RQ Series consisting of six cooling sizes ranging from one to six tons; our RN Series offered in 18 cooling 
sizes ranging from six to 70 tons; our RL Series, which is offered in 15 cooling sizes ranging from 40 to 230 tons; and our HA Series, which is a 
horizontal discharge package for either rooftop or ground installation offered in eight sizes ranging from seven and one-half to 50 tons. We also 
produce the MN Series rooftop products, in sizes as required.

We manufacture a Model LC Chiller, air cooled, and a Model LL chiller, which is available in both air-cooled condensing and evaporative cooled 
configurations.

Our air-handling units consist of the F1 and H/V Series and the modular (M2 and M3) Series. 

Our heat recovery option applicable to our RQ, RN and RL units, as well as our M2 and M3 Series air handlers, respond to the U.S. Clean Air Act 
mandate to increase fresh air in commercial structures. Our products are designed to compete on the higher quality end of standardized products.

ANNuAl RepORT

Performance characteristics of our products range in cooling capacity from 20,000 - 4,320,000 BTU’s and in heating capacity from 69,000 - 6,000,000 
BTU’s. All of our products meet the Department of Energy’s efficiency standards, which define the maximum amount of energy to be used in 
producing a given amount of cooling.

A typical commercial building installation requires a ton of air-conditioning for every 300-400 square feet or, for a 100,000 square foot building, 
250 tons of air-conditioning, which can involve multiple units.

We have developed and are beginning to market a residential condensing unit (CB Series) and air handlers (F1 Series).

MAjOR CuStOMeRS

No customer accounted for 10% of our sales during 2009, 2008 or 2007.

SOuRCeS ANd AVAiLABiLity OF RAw MAteRiALS

The most important materials we purchase are steel, copper and aluminum, which are obtained from domestic suppliers. We also purchase from 
other domestic manufacturers certain components, including compressors, electric motors and electrical controls used in our products. We attempt 
to obtain the lowest possible cost in our purchases of raw materials and components, consistent with meeting specified quality standards. We are 
not dependent upon any one source for raw materials or the major components of our manufactured products. By having multiple suppliers, we 
believe that we will have adequate sources of supplies to meet our manufacturing requirements for the foreseeable future.

We attempt to limit the impact of increases in raw materials and purchased component prices on our profit margins by negotiating with each of our 
major suppliers on a term basis from six months to one year and by hedging copper prices in the form of derivatives. 

diStRiButiON

We employ a sales staff of 20 individuals and utilize approximately 91 independent manufacturer representatives’ organizations having 106 offices 
to market our products in the United States and Canada. We also have one international sales organization, which utilizes 12 distributors in other 
countries. Sales are made directly to the contractor or end user, with shipments being made from our Tulsa, Oklahoma, Longview, Texas, and, prior 
to the termination of our operations there in September 2009, Burlington, Ontario, Canada, plants to the job site. Billings are to the contractor or 
end user, with a commission paid directly to the manufacturer representative.

Our products and sales strategy focus on niche markets. The targeted markets for our equipment are customers seeking products of better quality 
than offered, and/or options not offered, by standardized manufacturers.

To support and service our customers and the ultimate consumer, we provide parts availability through our sales offices and have factory service 
organizations at each of our plants. Also, a number of the manufacturer representatives we utilize have their own service organizations, which, in 
connection with us, provide the necessary warranty work and/or normal service to customers.

Our product warranty policy is: the earlier of one year from the date of first use or 18 months from date of shipment for parts only; an additional 
four years for compressors (if applicable); 15 years on gas-fired heat exchangers (if applicable); and 25 years on stainless steel heat exchangers (if 
applicable).

ReSeARCH ANd deVeLOpMeNt

All of our R&D activities are self-sponsored, rather than customer-sponsored. R&D has involved the RQ, RN, RL and MN (rooftop units), F1, H/V, 
M2 and M3 (air handlers), LC and LL (chillers), CB and CC (condensing units), SA (commercial self-contained units) and BL (boilers), as well as 
component evaluation and refinement, development of control systems and new product development. We incurred research and development 
expenses of approximately $3,074,000, $2,577,000 and $2,483,000 in 2009, 2008 and 2007, respectively.

BACkLOg

Our current backlog as of March 1, 2010, was approximately $39,844,000 compared to approximately $45,182,000 at March 1, 2009. The current 
backlog consists of orders considered by management to be firm and substantially all of which will be filled by August 1, 2010; however, the orders 
are subject to cancellation by the customers.

1

2

2009ANNuAl RepORT

wORkiNg CApitAL pRACtiCeS 

iteM 1A. RiSk FACtORS. 

Working capital practices in the industry center on inventories and accounts receivable. Our management regularly reviews our working capital with 
a view to maintaining the lowest level consistent with requirements of anticipated levels of operation. Our greatest needs arise during the months 
of July - November, the peak season for inventory (primarily purchased material) and accounts receivable. Our working capital requirements are 
generally met by cash flow from operations and a bank revolving credit facility, which currently permits borrowings up to $15,150,000. We believe 
that we will have sufficient funds available to meet our working capital needs for the foreseeable future. We expect to renew our revolving credit 
agreement in July 2010. We do not expect that the current situation in the credit market will impact our renewal. 

SeASONALity

Sales of our products are moderately seasonal with the peak period being July - November of each year.

COMpetitiON

In the standardized market, we compete primarily with Lennox International, Inc., Ingersoll Rand Limited, Johnson Controls Inc. and United 
Technologies  Corporation.  All  of  these  competitors  are  substantially  larger  and  have  greater  resources  than  we  do.  In  the  custom  market,  we 
compete with many larger and smaller manufacturers. Our products compete on the basis of total value, quality, function, serviceability, efficiency, 
availability  of  product,  product  line  recognition  and  acceptability  of  sales  outlet.  However,  in  new  construction  where  the  contractor  is  the 
purchasing decision maker, we are often at a competitive disadvantage because of the emphasis placed on initial cost. In the replacement market and 
other owner-controlled purchases, we have a better chance of getting the business since quality and long-term cost are generally taken into account.

eMpLOyeeS

The following risks and uncertainties may affect our performance and results of operations.

OuR BuSiNeSS HAS BeeN HuRt By tHe CuRReNt eCONOMiC dOwNtuRN.

Our business is affected by a number of economic factors, including the level of economic activity in the markets in which we operate. The state 
of the United States economy has negatively impacted the commercial and industrial new construction markets. The current decline in economic 
activity in the United States could materially affect our financial condition and results of operations. Sales in the commercial and industrial new 
construction markets correlate closely to the number of new homes and buildings that are built, which in turn is influenced by cyclical factors such 
as interest rates, inflation, consumer spending habits, employment rates and other macroeconomic factors over which we have no control. In the 
Heating, Ventilation, and Air Conditioning (“HVAC”) business, a decline in economic activity as a result of these cyclical or other factors typically 
results in a decline in new construction and replacement purchases, which has resulted in a decrease in our sales volume and profitability.

we MAy Be AdVeRSeLy AFFeCted By pROBLeMS iN tHe AVAiLABiLity, OR iNCReASeS iN tHe pRiCeS, OF 
RAw MAteRiALS ANd COMpONeNtS.

Problems in the availability, or increases in the prices, of raw materials or components could depress our sales or increase the costs of our products. 
We are dependent upon components purchased from third parties, as well as raw materials such as steel, copper and aluminum. We enter into 
cancelable and noncancelable contracts on terms from six months to one year for raw materials and components at fixed prices. However, if a key 
supplier is unable or unwilling to meet our supply requirements, we could experience supply interruptions or cost increases, either of which could 
have an adverse effect on our gross profit.

As of March 1, 2010, we had 1,165 permanent employees and 13 temporary employees. Our employees are not currently represented by unions. 
Management considers relations with our employees to be good.

we  RiSk  HAViNg  LOSSeS  ReSuLtiNg  FROM  tHe  uSe  OF  NONCANCeLABLe  Fixed  pRiCe  CONtRACtS 
ANd deRiVAtiVeS.

pAteNtS, tRAdeMARkS, LiCeNSeS ANd CONCeSSiONS

We do not consider any patents, trademarks, licenses or concessions to be material to our business operations, other than patents issued regarding 
our heat recovery wheel option, blower, gas-fired heat exchanger and evaporative condenser desuperheater.

eNViRONMeNtAL MAtteRS

Laws concerning the environment that affect or could affect our domestic operations include, among others, the Clean Water Act, the Clean Air Act, 
the Resource Conservation and Recovery Act, the Occupational Safety and Health Act, the National Environmental Policy Act, the Toxic Substances 
Control Act, regulations promulgated under these Acts, and any other federal, state or local laws or regulations governing environmental matters. 
We believe that we presently comply with these laws and that future compliance will not materially adversely affect our earnings or competitive 
position.

AVAiLABLe iNFORMAtiON

Our Internet website address is http://www.aaon.com. Our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 
8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act of 1934 will be available through 
our Internet website as soon as reasonably practical after we electronically file such material with, or furnish it to, the SEC.

Historically,  we  attempted  to  limit  the  impact  of  price  fluctuations  on  commodities  by  entering  into  noncancelable  fixed  price  contracts  with 
our major suppliers for periods of 6 - 18 months. We expect to receive delivery of raw materials from our fixed price contracts for use in our 
manufacturing operations. These fixed price contracts are not accounted for as derivative instruments since they meet the normal purchases and 
sales exemption. In the third quarter of 2009, we began hedging copper prices in the form of derivatives. If future copper prices decline below our 
contract prices, a corresponding loss would result.

Derivative  transactions  also  involve  the  risk  that  our  counterparty,  which  currently  is  one  financial  institution,  may  be  unable  to  satisfy  their 
obligations to us. If our counterparty were to default on its obligations to us under a forward purchase contract or seek bankruptcy protection, it 
could have a material adverse effect on our profit margins. In addition, in the current economic environment and tight financial markets, the risk 
of counterparty default is heightened, which could result in a larger percentage of our future production being subject to commodity price changes.

we MAy NOt Be ABLe tO SuCCeSSFuLLy deVeLOp ANd MARket New pROduCtS.

Our future success will depend upon our continued investment in research and new product development and our ability to continue to realize 
new technological advances in the HVAC industry. Our inability to continue to successfully develop and market new products or our inability to 
achieve technological advances on a pace consistent with that of our competitors could lead to a material adverse effect on our business and results 
of operations.

we  MAy  iNCuR  MAteRiAL  COStS  AS  A  ReSuLt  OF  wARRANty  ANd  pROduCt  LiABiLity  CLAiMS  tHAt 
wOuLd NegAtiVeLy AFFeCt OuR pROFitABiLity.

The development, manufacture, sale and use of our products involve a risk of warranty and product liability claims. Our product liability insurance 
policies have limits that, if exceeded, may result in material costs that would have an adverse effect on our future profitability. In addition, warranty 
claims are not covered by our product liability insurance and there may be types of product liability claims that are also not covered by our product 
liability insurance.

3

4

2009ANNuAl RepORT

we MAy NOt Be ABLe tO COMpete FAVORABLy iN tHe HigHLy COMpetitiVe HVAC BuSiNeSS.

iteM 2. pROpeRtieS.

Competition  in  our  various  markets  could  cause  us  to  reduce  our  prices  or  lose  market  share,  or  could  negatively  affect  our  cash  flow,  which 
could have an adverse effect on our future financial results. Substantially all of the markets in which we participate are highly competitive. The 
most significant competitive factors we face are product reliability, product performance, service and price, with the relative importance of these 
factors varying among our product line. Other factors that affect competition in the HVAC market include the development and application of 
new technologies and an increasing emphasis on the development of more efficient HVAC products. Moreover, new product introductions are an 
important factor in the market categories in which our products compete. Several of our competitors have greater financial and other resources 
than we have, allowing them to invest in more extensive research and development. We may not be able to compete successfully against 
current and future competition and current and future competitive pressures faced by us may materially adversely affect our business 
and results of operations.

tHe LOSS OF NORMAN H. ASBjORNSON COuLd iMpAiR tHe gROwtH OF OuR BuSiNeSS.

Norman H. Asbjornson, our founder, has served as our President and Chief Executive Officer from inception to date. He has provided the leadership 
and  vision  for  our  growth.  Although  important  responsibilities  and  functions  have  been  delegated  to  other  highly  experienced  and  capable 
management personnel, our products are technologically advanced and well positioned for sales into the future and we carry key man insurance 
on Mr. Asbjornson, his death, disability or retirement could impair the growth of our business. We do not have an employment agreement with 
Mr. Asbjornson.

OuR StOCkHOLdeR RigHtS pLAN ANd SOMe pROViSiONS iN OuR ByLAwS ANd NeVAdA LAw COuLd 
deLAy OR pReVeNt A CHANge iN CONtROL.

Our stockholder rights plan and some provisions in our bylaws and Nevada law could delay or prevent a change in control, which could adversely 
affect the price of our common stock.

The plant and office facilities in Tulsa, Oklahoma, consist of a 337,000 sq. ft. building (322,000 sq. ft. of manufacturing/warehouse space and 15,000 
sq. ft. of office space) located on a 12-acre tract of land at 2425 South Yukon Avenue (the “original facility”), and a 693,000 sq. ft. manufacturing/
warehouse building and a 22,000 sq. ft. office building (the “expansion facility”) located on a 40-acre tract of land across the street from the original 
facility (2440 South Yukon Avenue). Both plants are of sheet metal construction.

The original facility’s manufacturing area is in a heavy industrial type building, with total coverage by bridge cranes, containing manufacturing 
equipment  designed  for  sheet  metal  fabrication  and  metal  stamping.  The  manufacturing  equipment  contained  in  the  original  facility  consists 
primarily of automated sheet metal fabrication equipment, supplemented by presses, press breaks and numerical control punching equipment. 
Assembly lines consist of four cart-type conveyor lines with variable line speed adjustment, three of which are motor driven. Subassembly areas and 
production line manning are based upon line speed. The manufacturing facility is 1,140 feet in length and varies in width from 390 feet to 220 feet. 

In the expansion facility we use 22,000 sq. ft. for office space, 20,000 sq. ft. for warehouse space and 80,000 sq. ft. for two production lines; an 
additional 106,000 sq. ft. is utilized for sheet metal fabrication. The remaining 487,000 sq. ft. is presently being prepared as additional plant space 
for long-term growth. 

Our operations in Longview, Texas, are conducted in a plant/office building at 203-207 Gum Springs Road, containing 258,000 sq. ft. on 14 acres. 
The manufacturing area (approximately 251,000 sq. ft.) is located in three 120-foot wide sheet metal buildings connected by an adjoining structure. 
The facility is built for light industrial manufacturing. An additional, contiguous 15 acres were purchased in 2004 and 2005 for future expansion.

Our previous operations (closed in September 2009) in Burlington, Ontario, Canada, were located at 279 Sumach Drive, consisting of an 82,000 sq. 

ft. office/manufacturing facility on a 5.6 acre tract of land, currently listed for sale.

OuR  BuSiNeSS  iS  SuBjeCt  tO  tHe  RiSkS  OF  iNteRRuptiONS  By  pROBLeMS  SuCH  AS  COMputeR 
ViRuSeS.

iteM 3. LegAL pROCeediNgS. 

Despite our implementation of network security measures, our services are vulnerable to computer viruses, break-ins and similar disruptions from 
unauthorized tampering with our computer systems. Any such event could have a material adverse affect on our business.

We are not a party to any pending legal proceeding which management believes is likely to result in a material liability and no such action is 
contemplated by or, to the best of our knowledge, has been threatened against us.

expOSuRe tO eNViRONMeNtAL LiABiLitieS COuLd AdVeRSeLy AFFeCt OuR ReSuLtS OF OpeRAtiONS.

iteM 4. SuBMiSSiON OF MAtteRS tO A VOte OF SeCuRity HOLdeRS.

Our future profitability could be adversely affected by current or future environmental laws. We are subject to extensive and changing federal, state 
and local laws and regulations designed to protect the environment in the United States and in other parts of the world. These laws and regulations 
could impose liability for remediation costs and result in civil or criminal penalties in case of non-compliance. Compliance with environmental 
laws increases our costs of doing business. Because these laws are subject to frequent change, we are unable to predict the future costs resulting 
from environmental compliance.

we ARe SuBjeCt tO AdVeRSe CHANgeS iN tAx LAwS.

Tax benefits could be adversely affected by changes in tax provisions, unfavorable findings in tax examinations or differing interpretations by tax 
authorities. We are unable to estimate the impact that current and future tax proposals and tax laws could have on our results of operations. We are 
not currently under audit by any taxing jurisdiction.

iteM 1B. uNReSOLVed StAFF COMMeNtS.

None.

No matter was submitted to a vote of security holders, through solicitation of proxies or otherwise, during the period from October 1, 2009 through 
December 31, 2009.

5

6

2009pARt 2

iteM  5.  MARket  FOR  RegiStRANt’S  COMMON  eQuity,  ReLAted  StOCkHOLdeR 
MAtteRS ANd iSSueR puRCHASeS OF eQuity SeCuRitieS.

Our Common Stock is traded on the NASDAQ Global Select Market under the symbol “AAON”. The range of closing prices for our Common Stock 
during the last two years, as reported by National Association of Securities Dealers, Inc., was as follows:

QuARteR eNded

HigH

LOw

March 31, 2008

June 30, 2008

September 30, 2008

December 31, 2008

March 31, 2009

June 30, 2009

September 30, 2009

December 31, 2009

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

20.52   $  15.88

22.92   $  17.60

22.85   $  16.91

21.20   $  12.92

20.93   $  14.81

21.86   $  16.22

21.97   $  18.81

20.52   $  18.01

On February 25, 2010, there were 1,001 holders of record, and approximately 3,500 beneficial owners, of our Common Stock.

On February 14, 2006, the Board of Directors voted to initiate a semi-annual cash dividend. We initially paid semi-annual dividends of $0.20 per 
share. The Board of Directors approved dividend payments of $0.16 per share related to the stock split effective August 21, 2007. The Board of 
Directors approved future dividend payments of $0.18 per share on May 19, 2009. Board approval is required to determine the date of declaration 
and amount for each semi-annual dividend payment. 

In 2009, dividends were declared to shareholders of record at the close of business on June 11, 2009 and December 14, 2009 and were paid on July 
2, 2009 and January 4, 2010. We paid cash dividends of $5.9 million during the year ended December 31, 2009, and accrued a liability for payment 
of $3.1 million of dividends in January 2010. 

Following repurchases of approximately 12% of our outstanding Common Stock between September 1999 and September 2001, we announced and 
began another stock repurchase program on October 17, 2002, targeting repurchases of up to approximately 2.0 million shares of our outstanding 
stock. On February 14, 2006, the Board of Directors approved the suspension of our repurchase program. Through February 14, 2006, we had 
repurchased a total of 1,886,796 shares under this program for an aggregate price of $22,034,568, or an average of $11.68 per share. We purchased 
the shares at current market prices.

On November 6, 2007, our Board of Directors authorized a new stock buyback program, targeting repurchases of up to approximately 10% (1.8 
million shares) of our outstanding stock from time to time in open market transactions. Through December 31, 2009, we repurchased a total of 
1,717,804 shares under this program for an aggregate price of $34,192,008, or an average of $19.90 per share. We purchased the shares at current 
market prices.

On July 1, 2005, we entered into a stock repurchase arrangement by which employee-participants in our 401(k) savings and investment plan are 
entitled to have shares of AAON stock in their accounts sold to us to provide diversification of their investments. The maximum number of shares 
to be repurchased is unknown under the program as the amount is contingent on the number of shares sold by employees. Through December 
31, 2009, we repurchased 760,477 shares for an aggregate price of $12,589,311, or an average price of $16.55 per share. We purchased the shares at 
current market prices.

On November 7, 2006, the Board of Directors authorized us to repurchase shares from certain directors and officers following their exercise of stock 
options. The maximum number of shares to be repurchased under the program is unknown as the amount is contingent on the number of shares 
sold. Through December 31, 2009, we repurchased 350,375 shares for an aggregate price of $7,167,623, or an average price of $20.46 per share. We 
purchased the shares at current market prices.

ANNuAl RepORT

Repurchases during the fourth quarter of 2009 were as follows:

iSSueR puRCHASeS OF eQuity SeCuRitieS

period

(a) 
total Number of 
Shares (or units) 
purchased

(b) 
Average price 
paid per Share (or 
unit)

(c) 
total Number of 
Shares (or units) 
purchased as part of 
publicly Announced 
plans or programs

(d) 
Maximum Number (or 
Approximate dollar 
Value) of Shares (or 
units) that May yet Be 
purchased under the 
plans or programs

October 2009

November 2009

December 2009

Total

20,570

5,163

4,607

30,340

StOCk peRFORMANCe gRApH (1)

$18.86

$19.70

$19.46

$19.09

20,570

5,163

4,607

30,340

-

-

-

-

The following graph compares our cumulative total shareholder return, the NASDAQ Composite and the peer group named below. 
The graph assumes a $100 investment at the closing price on January 1, 2004, and reinvestment of dividends on the date of payment 
without commissions. This table is not intended to forecast future performance of our Common Stock.

COMpuLSiON OF 5 yeAR CuMuLAtiVe tOtAL RetuRN
ASSuMeS iNitiAL iNVeStMeNt OF $100
deCeMBeR 2009

250.00

200.00

150.00

100.00

50.00

0.00

2004

2005

2006

2007

2008

2009

AAON INC.

S&P 500 Index - Total Returns

Peer Group

The peer group consists of Lennox International, Inc., Ingersoll Rand Limited, Johnson Controls Inc., and United Technologies Corporation. All 
companies in the peer group are in the business of manufacturing air conditioning and heat exchange equipment. 

(1) Securities and Exchange Commission (“SEC”) filings sometimes “incorporate information by reference.” This means we are referring you to 
information that has previously been filed with the SEC, and that this information should be considered as part of the filing you are reading. Unless 
we specifically state otherwise, this Stock Performance Graph shall not be deemed to be incorporated by reference and shall not constitute soliciting 
material or otherwise be considered filed under the Securities Act of 1933, as amended, or the Securities Exchange act of 1934, as amended.

7

8

2009 
 
 
iteM 6. SeLeCted FiNANCiAL dAtA.

The following selected financial data should be read in conjunction with the financial statements and related notes thereto for the periods indicated 
which are included elsewhere in this report.

Results of Operations:

2009

2008

2007

2006

2005

yeARS eNded deCeMBeR 31,

Net sales

Net income

Earnings per share:

Basic

Diluted

Cash dividends declared per common share

Weighted average shares outstanding:

Basic

Diluted

$ 

$ 

$ 

$ 

$ 

(in thousands, except per share data)

245,282   $ 

279,725 $ 

262,517 $ 

231,460 $ 

185,195

27,721 $ 

28,589 $ 

23,156 $ 

17,133 $ 

11,462

1.61 $ 

1.60 $ 

0.36   $ 

1.63 $ 

1.60 $ 

0.32     $ 

1.24 $ 

1.22 $ 

0.32 $ 

0.93 $ 

0.90 $ 

0.32 $ 

0.62

0.60

-

17,187

17,309

17,560

17,855

18,628

18,927

18,456

18,968

18,510

19,125

deCeMBeR 31,

Financial position at end of Fiscal year:

2009

2008

2007

2006

2005

Working capital

Total assets

Long-term and current debt

Total stockholders’ equity

(in thousands)

$ 

$ 

$ 

$ 

65,354 $ 

40,600 $ 

38,788 $ 

36,356 $ 

33,372

156,211 $ 

140,743 $ 

137,140 $ 

130,056 $ 

113,606

76 $ 

3,113 $ 

330 $ 

59 $ 

167

117,999 $ 

96,522 $ 

95,420 $ 

91,592 $ 

79,495

Basic earnings per common share were computed by dividing net income by the weighted average number of shares of common stock outstanding 
during the reporting period. Diluted earnings per common share were determined on the assumed exercise of dilutive options, as determined by 
applying the treasury stock method. Effective August 21, 2007, we completed a three-for-two stock split. The shares outstanding and earnings per 
share disclosures have been restated to reflect the stock split.

ANNuAl RepORT

iteM 7. MANAgeMeNt’S diSCuSSiON ANd ANALySiS OF FiNANCiAL CONditiON ANd  
ReSuLtS OF OpeRAtiONS.

OVeRView

We  engineer,  manufacture  and  market  air-conditioning  and  heating  equipment  consisting  of  rooftop  units,  chillers,  air-handling  units,  make-
up air units, heat recovery units, condensing units, commercial self-contained units and coils. These products are marketed and sold to retail, 
manufacturing, educational, medical and other commercial industries. We market units to all 50 states in the United States and certain provinces 
in Canada. Foreign sales were less than 5% of our 2009 sales. 

We sell our products to property owners and contractors through a network of manufacturers’ representatives and our internal sales force. Demand 
for  our  products  is  influenced  by  national  and  regional  economic  and  demographic  factors.  The  commercial  and  industrial  new  construction 
market is subject to cyclical fluctuations in that it is generally tied to housing starts, but has a lag factor of 6-18 months. Housing starts, in turn, are 
affected by such factors as interest rates, the state of the economy, population growth and the relative age of the population. When new construction 
is down, we emphasize the replacement market.

The principal components of cost of goods sold are labor, raw materials, component costs, factory overhead, freight out and engineering expense. 
The principal high volume raw materials used in our manufacturing processes are steel, copper and aluminum, which are obtained from domestic 
suppliers. The raw materials market was volatile during 2009 and 2008 due to the economic environment. Prices decreased by approximately 31% 
for steel, 20% for aluminum and 24% for copper from December 31, 2006 to December 31, 2009. We have entered into contracts that are below 
the average index price as of December 31, 2009. The lower commodity prices have contributed to our lower cost of goods sold and higher gross 
margins.

We entered into a derivative instrument in the third quarter of 2009 with a large financial institution to mitigate our exposure to volatility in copper 
prices. The derivative is in the form of a commodity futures contract. The derivative contract settles monthly beginning in January 2010 and ending 
in December 2010. The contract is for a total of 2,250,000 pounds of copper at $2.383 per pound. The contract is for quantities equal to or less than 
those expected to be used in our manufacturing operations in 2010. 

We are subject to claims and legal actions that arise in the ordinary course of business. Management believes that the ultimate liability from these 
claims and actions, if any, will not have a material effect on our results of operations or financial position.

In addition to our derivative instrument, we attempt to limit the impact of price fluctuations on these materials by entering into cancelable and 
noncancelable fixed price contracts with our major suppliers for periods of 6 - 18 months. We expect to receive delivery of raw materials from our 
fixed price contracts for use in our manufacturing operations. These contracts are not accounted for as derivative instruments since they meet the 
normal purchases and sales exemption. 

Selling, general, and administrative (“SG&A”) costs include our internal sales force, warranty costs, profit sharing and administrative expenses. 
Warranty  expense  is  estimated  based  on  historical  trends  and  other  factors.  Our  product  warranty  policy  is:  the  earlier  of  one  year  from  the 
date of first use or 18 months from date of shipment for parts only; an additional four years on compressors (if applicable); 15 years on gas-fired 
heat exchangers (if applicable); and 25 years on stainless steel heat exchangers (if applicable). Warranty charges on heat exchangers do not occur 
frequently.

Our plant and office facilities in Tulsa, Oklahoma, consist of a 337,000 sq. ft. building (322,000 sq. ft. of manufacturing/warehouse space and 15,000 
sq. ft. of office space) located at 2425 S. Yukon Avenue (the “original facility”), and a 693,000 sq. ft. manufacturing/warehouse building and a 22,000 
sq. ft. office building (the “expansion facility”) located across the street from the original facility at 2440 S. Yukon Avenue. 

In the expansion facility we use 22,000 sq. ft. for office space, 20,000 sq. ft. for warehouse space and 80,000 sq. ft. for two production lines; an 
additional 106,000 sq. ft. is utilized for sheet metal fabrication. The remaining 487,000 sq. ft. is presently being prepared as additional plant space 
for long-term growth.

Our operations in Longview, Texas, are conducted in a plant/office building at 203-207 Gum Springs Road containing 258,000 sq. ft. (251,000 sq. ft. 
of manufacturing/warehouse space and 7,000 sq. ft. of office space). An additional contiguous 15 acres were purchased in 2004 and 2005 for future 
expansion. 

Our previous operations in Burlington, Ontario, Canada, were located at 279 Sumach Drive, consisting of an 82,000 sq. ft. office/manufacturing 
facility. The facility was classified as available for sale upon closure of our manufacturing operations in September 2009. We plan to sell the property 
within one year. 

9

10

2009 
 
Set forth below is income statement information and as a percentage of sales for years 2009, 2008 and 2007:

Net SALeS

ANNuAl RepORT

yeARS eNdiNg deCeMBeR 31,

2009

2008

(in thousands)

2007

            $  245,282 

100.0%   $  279,725  

100.0%   $  262,517 

100.0%

177,737

67,545

23,791  

43,754 

(9)

71

76

72.5%

27.5%

9.7%

17.8%

0.0%

0.0%

0.1%

212,549

76.0%

205,148

67,176  

24.0%    

57,369 

23,788

43,388

(71)

27

724

44,068

15,479

8.5%

15.5%

0.0%

0.0%

0.3%

15.8%

5.6%

21,703 

35,666

(10)

8

(321)

35,343

12,187

78.1%

21.9%

8.3%

13.6%

0.0%

0.0%

(0.1%)

13.5%

4.7%

8.8%

 Income before income taxes

43,892  

17.9%  

Income tax provision

16,171

6.6%

  Net income

  $  27,721

11.3%      $  28,589

10.2%   $  23,156

Net sales

Cost of sales

Gross profit

Selling, general and 
administrative expenses

Income from operations

       Interest expense 

Interest income

Other income (expense), net

ReSuLtS OF OpeRAtiONS

Key events impacting our cash balance, financial condition and results of operations in 2009 include the following: 

• We remained the leader in the industry for environmentally-friendly, energy efficient and quality innovations, utilizing R410A refrigerant and 
phasing out pollutant causing R22 refrigerant. The phase out of R22 began in early 2004. We also utilize a high performance composite foam 
panel to eliminate over half of the heat transfer from typical fiberglass insulated panels. We continue to utilize sloped condenser coils and 
access compartments to filters, motor, and fans. All of these innovations increase the demand for our products thus increasing market share.
• We have attempted to moderate certain commodity costs by utilizing purchase agreements and pricing strategies which affect our gross margins.
• In February 2006, our Board of Directors initiated a program of semi-annual cash dividend payments. Cash payments of $5.9 million were 
made ($2.8 million paid in January 2009 and $3.1 million paid in July 2009), and accrued a liability for payment of $3.1 million of dividends 
in January 2010. 

• Stock repurchases from our employees’ 401(k) savings and investments plan were authorized in 2005. Stock repurchases from directors and 
officers were authorized in 2006. Repurchases of our stock from the open market were authorized and initiated in November 2007. Total 
repurchases resulted in cash payments of $3.1 million. This cash outlay is partially offset by cash received from options exercised by employees 
as a part of an incentive bonus program of $1.2 million.

• We have a strong liquidity position with cash on hand of $25.6 million. In view of the current economic environment, our goal remains to keep 

a healthy financial condition. 

• Purchases of equipment and renovations to manufacturing facilities remained a priority. Our capital expenditures were $9.8 million. Equipment 
purchases create significant efficiencies, lower production costs and allow continued growth in production. We currently estimate dedicating 
$7-8 million to capital expenditures in 2010 for continued growth. 

• We expanded a portion of our manufacturing facility in 2009 for future growth.
• We closed our manufacturing operations and reclassified our Canadian facility as held for sale in September 2009. The products previously 

manufactured at the Canadian facility will be produced by the Tulsa, Oklahoma, and Longview, Texas, facilities in the future. 

Net sales were $245.3 million, $279.7 million and $262.5 million in 2009, 2008 and 2007, respectively. Sales decreased $34.4 million or 12.3% in 
2009 from 2008 which was attributable to the decreased volume related to the current economic environment and lower sales from our Canadian 
operations. The current economic environment has negatively impacted commercial construction markets with some projects delayed, postponed 
indefinitely or cancelled. The replacement market has also been affected by customers delaying equipment replacement as a cost saving strategy. The 
increase in sales in 2008 from 2007 was due to an increase in volume of products sold related to our new and redesigned products being favorably 
received by our customers, the diversified customer mix of products, active marketing by sales representatives and pricing strategies implemented 
in order to keep up with the then increasing raw material costs. New commercial construction steadily improved throughout 2007, contributing 
to growth of the market. 

gROSS pROFit

Gross margins were $67.5 million, $67.2 million and $57.4 million in 2009, 2008 and 2007, respectively. Gross margins increased $0.3 million 
in 2009 from 2008. As a percentage of sales, gross margins were 27.5%, 24.0% and 21.9% in 2009, 2008 and 2007, respectively. The 15% increase 
in  gross  margins  percentage  in  2009  from  2008  was  primarily  a  result  of  lower  material  costs,  improved  production  and  labor  efficiencies,  a 
reduction in manufacturing related expenses and a $2.2 million ($1.4 million net of tax) unrealized gain from a derivative asset included in cost of 
sales, despite lower net sales and expenses associated with the Canadian facility closure. Our gross margins as a percentage of sales excluding the 
unrealized gain were 26.6%, 24.0% and 21.9% in 2009, 2008 and 2007, respectively. The increase in gross profit in 2008 from 2007, resulted from 
pricing strategies implemented and production and labor efficiencies, as sales volume increased. 

The principal components of cost of goods sold are labor, raw materials, component costs, factory overhead, freight out and engineering expense. 
The principal high volume raw materials used in our manufacturing processes are steel, copper and aluminum, which are obtained from domestic 
suppliers. We also purchase from other domestic manufacturers certain components, including compressors, electric motors and electrical controls 
used in our products. The suppliers of these components are significantly affected by the raw material costs of steel, copper and aluminum used in 
their products. The raw materials market was volatile during 2009 and 2008 due to the economic environment. Prices decreased by approximately 
31% for steel, 20% for aluminum and 24% for copper from December 31, 2006 to December 31, 2009. We have entered into contracts that are below 
the average index price as of December 31, 2009. The lower commodity prices have contributed to our lower cost of goods sold and higher gross 
margins.

We entered into a derivative instrument in the third quarter of 2009 with a large financial institution to mitigate our exposure to volatility in copper 
prices. The derivative is in the form of a commodity futures contract. The derivative contract settles monthly beginning in January 2010 and ending 
in December 2010. The contract is for a total of 2,250,000 pounds of copper at $2.383 per pound. The contract is for quantities equal to or less than 
those expected to be used in our manufacturing operations in 2010. 

We are subject to claims and legal actions that arise in the ordinary course of business. Management believes that the ultimate liability from these 
claims and actions, if any, will not have a material effect on our results of operations or financial position.

In addition to our derivative instrument, we attempt to limit the impact of price fluctuations on these materials by entering into cancelable and 
noncancelable fixed price contracts with our major suppliers for periods of 6 - 18 months. We expect to receive delivery of raw materials from our 
fixed price contracts for use in our manufacturing operations. These contracts are not accounted for as derivative instruments since they meet the 
normal purchases and sales exemption.

SeLLiNg, geNeRAL ANd AdMiNiStRAtiVe expeNSeS

Selling, general and administrative expenses (“SG&A”) were $23.8 million, $23.8 million and $21.7 million in 2009, 2008 and 2007, respectively. 
In 2009, our SG&A expenses remained consistent with 2008, despite lower sales volumes in 2009 compared to 2008. Warranty expenses in 2009 
increased due to specific warranty items and sales related expenses increased due to our expanded marketing to remain competitive in the current 
environment. As a percentage of sales, SG&A expenses were 9.7%, 8.5% and 8.3% in 2009, 2008 and 2007, respectively. The increase in SG&A 
expenses in 2008 from 2007 was due primarily to an increase in selling related expenses, warranty expense caused by increased sales, increase in 
profit sharing resulting from an increase in net income, and an overall increase in general and administrative expenses.

11

12

2009 
 
 
iNteReSt expeNSe

Interest  expense  was  approximately  $9,000,  $71,000  and  $10,000  in  2009,  2008  and  2007,  respectively.  The  decrease  in  interest  expense  of 
approximately  $62,000  in  2009  from  2008  was  due  to  fewer  borrowings  on  the  revolving  credit  facility.  We  borrowed  $10.0  million  from  the 
revolving credit facility during 2009 compared to $46.9 million during 2008. Interest on borrowings is payable monthly at the greater of 4.0% or 
LIBOR plus 2.5% (4.0% at December 31, 2009). The increase in interest expense in 2008 from 2007 was due to higher average borrowings under 
the revolving credit facility as a result of a decrease in net cash provided by operations related to the stock repurchases. In 2007, we borrowed 
$12.1 million from the revolving credit facility. Average borrowings under the revolving credit facility are typically paid in full within the month of 
borrowing or the following month. 

iNteReSt iNCOMe

Interest income was approximately $71,000, $27,000 and $8,000 in 2009, 2008 and 2007, respectively. The increase in interest income of approximately 
$44,000 in 2009 from 2008 was mainly due to interest income from a tax refund. The increase in interest income in 2008 from 2007 was due to 
interest paid for repurchased stock that was held in transit by the transfer agent in early 2008.

OtHeR iNCOMe (expeNSe)

Other income was approximately $76,000 and $724,000 in 2009 and 2008, respectively. The decrease in other income of approximately $648,000 in 
2009 from 2008 was due to the termination of the lease on our expansion facility. The increase in other income in 2008 from 2007 was primarily 
related to foreign currency translations that resulted from operations in Canada. Other expense was approximately $321,000 in 2007. 

Prior to the lease expiration in May 2009, other income was primarily attributable to rental income from our expansion facility. We began renovations 
on the expansion facility to give us increased manufacturing capacity upon expiration of the lease. Our 2010 capital expenditures budget reflects 
the projected outlay to remodel the facility.

iMpACt OF CuRReNt eCONOMiC CONditiONS

Our business is affected by a number of economic factors, including the level of economic activity in the markets in which we operate. The current 
state of the economy has negatively impacted the commercial and industrial new construction markets. The current decline in economic activity 
has resulted in a decrease in our sales volume and profitability. Sales in the commercial and industrial new construction markets correlate closely 
to the number of new homes and buildings that are built, which in turn is influenced by cyclical factors such as interest rates, inflation, consumer 
spending habits, employment rates and other macroeconomic factors over which we have no control. 

ANNuAl RepORT

Management believes projected cash flows from operations and our bank revolving credit facility (or comparable financing) will provide us the 
necessary liquidity and capital resources for fiscal year 2010 and the foreseeable future. The belief that we will have the necessary liquidity and 
capital resources is based upon management’s knowledge of the HVAC industry and our place in that industry, our ability to limit our growth 
if necessary, our ability to adjust dividend cash payments, and our relationship with our existing bank lender. For information concerning our 
revolving credit facility at December 31, 2009, see Note 3, Revolving Credit Facility.

Cash Provided by Operating Activities. Net cash provided from operating activities has fluctuated from year to year. Net cash provided by operating 
activities was $45.2 million, $33.4 million and $31.2 million in 2009, 2008 and 2007, respectively. The year-to-year variances are primarily from 
changes in net income, accounts receivable, inventories, accounts payable and accrued liabilities as described below. 

Net income for 2009 was $27.7 million, a decrease of $0.9 million from $28.6 million in 2008. The decrease in net income in 2009 from 2008 was 
primarily due to lower volume of sales which was a result of the current economic environment and lower sales from our Canadian operations offset 
by lower material costs, improved production and labor efficiencies, a reduction in manufacturing related expenses and a $2.2 million ($1.4 million 
net of tax) unrealized gain from a derivative asset. The increase in net income in 2008 from 2007 was primarily due to increased volume of sales, 
adjusted pricing strategies, fluctuations in raw materials costs, innovative and efficient products and improved production efficiencies. 

Depreciation expense was $9.1 million, $9.4 million and $9.7 million in 2009, 2008 and 2007, respectively. The decrease in depreciation is due to the 
realization of full depreciation of certain capital assets. Share-based compensation was $0.8 million, $0.8 million and $0.6 million in 2009, 2008 and 
2007, respectively. Both depreciation expense and share-based compensation expense decreased net income, but had no effect on operating cash.

Accounts receivable decreased by $5.5 million at December 31, 2009 due to a decrease in sales during 2009 compared to December 31, 2008. 
Accounts receivable increased by $0.9 million at December 31, 2008 compared to December 31, 2007. The increase in accounts receivable in 2008 
from 2007 was attributable to an increase in sales. Accounts receivable increased by $1.8 million at December 31, 2007 compared to December 31, 
2006 due to increased sales. 

Inventories decreased by $7.2 million at December 31, 2009 compared to December 31, 2008 due to a decrease in inventory requirements related to 
lower sales volumes, a decrease related to the valuation of inventories due to lower raw material and component part prices and sales of inventory 
as part of the Canadian facility closure. Inventories increased by $4.8 million at December 31, 2008 compared to December 31, 2007. The increase 
in inventories in 2008 from 2007 was attributable to procurement of inventory to accommodate an increase of sales. Inventories increased by $2.1 
million at December 31, 2007 compared to December 31, 2006 primarily related to the valuation of inventories due to higher raw material and 
component part costs. 

ANALySiS OF LiQuidity ANd CApitAL ReSOuRCeS

Our working capital and capital expenditure requirements are generally met through net cash provided by operations and the occasional use of the 
revolving bank line of credit based on our current liquidity at the time.

Accounts payable decreased by $6.3 million at December 31, 2009 compared to December 31, 2008 due to fewer purchases related to lower sales 
volumes. Accounts payable increased by $0.4 million at December 31, 2008 compared to December 31, 2007. The increase in accounts payable in 
2008 from 2007 was attributable to timing of payments to vendors. Accounts payable decreased by $1.4 million at December 31, 2007 compared to 
December 31, 2006 due to the timing of payment to vendors. 

geNeRAL

Our revolving credit facility provides for maximum borrowings of $15.2 million which is provided by the Bank of Oklahoma, National Association. 
Under  the  line  of  credit,  there  is  one  standby  letter  of  credit  totaling  $0.9  million.  Borrowings  available  under  the  revolving  credit  facility  at 
December 31, 2009, were $14.3 million. The letter of credit is a requirement of our workers compensation insurance and was extended in 2009 and 
will expire December 31, 2010. Interest on borrowings is payable monthly at the greater of 4.0% or LIBOR plus 2.5% (4.0% at December 31, 2009). 
No fees are associated with the unused portion of the committed amount. At December 31, 2009, we had no borrowings outstanding under the 
revolving credit facility. At December 31, 2008, we had $2.9 million outstanding under the revolving credit facility. At December 31, 2007, we had 
no borrowings outstanding under the revolving credit facility. 

At December 31, 2009, 2008 and 2007, we were in compliance with our financial ratio covenants. The covenants are related to our tangible net 
worth, total liabilities to tangible net worth ratio and working capital. At December 31, 2009 our tangible net worth was $118.0 million which meets 
the requirement of being at or above $75.0 million. Our total liabilities to tangible net worth ratio was 1 to 3 which meets the requirement of not 
being above 2 to 1. Our working capital was $65.4 million which meets the requirement of being at or above $30.0 million. On July 30, 2009, we 
renewed the line of credit with a maturity date of July 30, 2010 with terms substantially the same as the previous agreement. We expect to renew our 
revolving credit agreement in July 2010. We do not anticipate that the current situation in the credit market will impact our renewal. 

Accrued liabilities increased by $0.8 million at December 31, 2009 compared to December 31, 2008 due to higher warranty and medical self-
insurance reserves related to specific items. Accrued liabilities increased by $0.9 million at December 31, 2008 compared to December 31, 2007. 
The  increase  in  accrued  liabilities  in  2008  from  2007  is  attributable  to  higher  workers  compensation  expenses  and  higher  warranty  expenses 
related to increased sales. Accrued liabilities increased by $6.3 million at December 31, 2007 compared to December 31, 2006 due to an increase in 
commissions payable related to the increase in sales and timing of commissions payable.

Cash Flows Used in Investing Activities. Cash flows used in investing activities were $9.6 million, $9.6 million and $10.8 million in 2009, 2008 and 
2007, respectively. Cash flows used in investing activities in 2009 did not significantly fluctuate from 2008 and were related to manufacturing and 
equipment purchases and costs to expand our manufacturing facilities. The decrease in cash flows used in investing activities in 2008 from 2007 was 
primarily related to lower capital expenditures. Management utilizes cash flows provided from operating activities to fund capital expenditures that 
are expected to increase growth and create efficiencies. We expect to expend approximately $7-8 million in 2010 for renovation of the previously 
leased facility and equipment. We expect the cash requirements to be provided by cash flows from operations. We did not invest in any certificates of 
deposits in 2009, 2008 or 2007. In January 2010, we invested $15.0 million with a large financial institution. The investments were allocated to cash 
and money market funds, mutual funds, certificates of deposit, corporate notes and bonds and foreign corporate notes and bonds with a maturity 
of one year or less.

13

14

2009Cash Flows Used in Financing Activities. Cash Flows Used in Financing Activities. Cash flows used in financing activities were $10.1 million, 
$24.5 million and $20.0 million in 2009, 2008 and 2007, respectively. The decrease in cash flows used in financing activities of $14.4 million in 2009 
from 2008 is primarily related to a lower volume of stock repurchases. The increase in cash flows used in financing activities in 2008 from 2007 was 
primarily related to cash dividends declared and paid and the continued repurchase of our stock. 

We  occasionally  utilize  our  revolving  line  of  credit  to  meet  certain  short-term  cash  demands  based  on  our  liquidity  at  the  time.  We  had  no 
borrowings  outstanding  under  the  revolving  credit  facility  at  December  31,  2009.  We  had  $2.9  million  outstanding  under  the  line  of  credit  at 
December 31, 2008. We had no borrowings outstanding under the revolving credit facility at December 31, 2007. We accessed $10.0 million, $46.9 
million and $12.1 million of borrowings under the line of credit during 2009, 2008 and 2007, respectively. 

We received cash from stock options exercised of $1.2 million, $1.7 million and $2.4 million and classified the excess tax benefit of stock options 
exercised and restricted stock awards vested of $0.7 million, $1.6 million and $3.0 million in financing activities in 2009, 2008 and 2007, respectively. 

We repurchased shares of stock under the Board of Directors authorized stock buyback programs. We also repurchased shares of stock from our 
employees’ 401(k) savings and investment plan, directors and officers and the open market in the amount of $3.1 million for 165,117 shares, $24.8 
million for 1,211,538 shares and $20.8 million for 1,082,736 shares of stock in 2009, 2008 and 2007, respectively.

On February 14, 2006, the Board of Directors voted to initiate a semi-annual cash dividend. We initially paid semi-annual dividends of $0.20 per 
share. On July 12, 2007, our Board of Directors approved a three-for-two stock split of our outstanding stock for shareholders of record as of August 
3, 2007. The stock split was treated as a 50% stock dividend which was distributed on August 21, 2007. As a result of the stock split, our Board 
of Directors adjusted the dividend paid per share to $0.16. The applicable share and per share data for 2007 included herein has been restated to 
reflect the stock split. The Board of Directors approved future dividend payments of $0.18 per share on May 19, 2009. Board approval is required to 
determine the date of declaration and amount for each semi-annual dividend payment. 

Cash dividend payments of $5.9 million were made in 2009, and we accrued a liability for payment of $3.1 million of dividends in January 2010. 
Cash dividend payments of $5.8 million were made in 2008, and $2.8 million in dividends were declared and accrued as a liability in December 
2008 for payment in January 2009. Cash dividend payments of $5.0 million were made in 2007, and $2.9 million in dividends were declared and 
accrued as a liability in December 2007 for payment in January 2008.

COMMitMeNtS ANd CONtRACtuAL AgReeMeNtS

The following table summarizes our long-term debt and other contractual agreements as of December 31, 2009:

pAyMeNtS due By peRiOd

(in thousands)

CONtRACtuAL OBLigAtiONS

tOtAL

LeSS tHAN  
1 yeAR

1–3 yeARS

4–5 yeARS

AFteR 5 
yeARS

Long-term capital leases

Purchase obligations(1)

Total contractual obligations

$ 

$ 

76 $ 

76 $ 

2,332

2,332

2,408            $ 

2,408             $ 

- $ 

    -

- $ 

- $ 

    -

- $ 

-

    -

-

(1) Purchase obligations consist primarily of copper and aluminum commitments. We are a party to several short-term, cancelable 
and noncancelable, fixed price contracts with major suppliers from our fixed price contracts for the purchase of raw material and 
component parts. We expect to receive delivery of raw materials for use in our manufacturing operations. These contracts are not 
accounted for as derivative instruments because they meet the normal purchases and sales exemption. 

We are subject to claims and legal actions that arise in the ordinary course of business. Management believes that the ultimate liability from 
these claims and actions, if any, will not have a material effect on our results of operations or financial position.

The fixed rate interest on long-term capital leases includes the amount of interest due on our fixed rate long-term debt. These amounts do not 
include interest on our variable rate obligation related to the revolving credit facility.

ANNuAl RepORT

CRitiCAL ACCOuNtiNg pOLiCieS 

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management 
to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at 
the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Because these estimates and 
assumptions require significant judgment, future actual results could differ from those estimates and could have a significant impact on our results 
of operations, financial position and cash flows. We reevaluate our estimates and assumptions on a monthly basis. 

The following accounting policies may involve a higher degree of estimation or assumption:

Revenue Recognition – We recognize revenues from sales of products when the products are shipped and the title and risk of ownership pass to 
the customer. Selling prices are fixed based on purchase orders or contractual agreements. Sales allowances and customer incentives are treated 
as reductions to sales and are provided for based on historical experiences and current estimates. For sales initiated by independent manufacturer 
representatives, we recognize revenues net of the representatives’ commission. Our policy is to record the collection and payment of sales taxes 
through a liability account.

Allowance for Doubtful Accounts - Our allowance for doubtful accounts is estimated to cover the risk of loss related to accounts receivable. We 
establish an allowance for doubtful accounts based upon factors surrounding the credit risk of specific customers, historical trends in collections 
and write-offs, current customer status, the age of the receivable, economic conditions and other information. Aged receivables are reviewed on 
a monthly basis to determine if the reserve is adequate and adjusted accordingly at that time. The evaluation of these factors involves complex, 
subjective judgments. Thus, changes in these factors or changes in economic circumstances may significantly impact our Consolidated Financial 
Statements. 

Inventory  Reserves  –  We  establish  a  reserve  for  inventories  based  on  the  change  in  inventory  requirements  due  to  product  line  changes,  the 
feasibility  of  using  obsolete  parts  for  upgraded  part  substitutions,  the  required  parts  needed  for  part  supply  sales,  replacement  parts  and  for 
estimated shrinkage. 

Warranty – A provision is made for estimated warranty costs at the time the product is shipped and revenue is recognized. The warranty period 
is: the earlier of one year from the date of first use or 18 months from date of shipment for parts only; an additional four years on compressors (if 
applicable); 15 years on gas-fired heat exchangers (if applicable); and 25 years on stainless steel heat exchangers (if applicable). Warranty expense 
is estimated based on the warranty period, historical warranty trends and associated costs, and any known identifiable warranty issue. Warranty 
charges associated with heat exchangers do not occur frequently. 

Due to the absence of warranty history on new products, an additional provision may be made for such products. Our estimated future warranty 
cost is subject to adjustment from time to time depending on changes in actual warranty trends and cost experience. Should actual claim rates differ 
from our estimates, revisions to the estimated product warranty liability would be required. 

Medical Insurance – A provision is made for medical costs associated with our Medical Employee Benefit Plan, which is primarily a self-funded plan. 
A provision is made for estimated medical costs based on historical claims paid and potential significant future claims. The plan is supplemented 
by employee contributions and an excess policy for claims over $125,000 each.

Stock  Compensation  –  We  account  for  equity-based  compensation  in  accordance  with  FASC  Topic  718,  Compensation  –  Stock  Compensation. 
Applying this standard to value equity-based compensation requires us to use significant judgment and to make estimates, particularly for the 
assumptions used in the Black-Scholes valuation model, such as stock price volatility and expected option lives, as well as for the expected option 
forfeiture rates. We measure the cost of employee services received in exchange for an award of equity instruments using the Black-Scholes valuation 
model to calculate the grant-date fair value of the award. The compensation cost is recognized over the period of time during which an employee is 
required to provide service in exchange for the award, which will be the vesting period. 

Derivatives – We use derivatives to mitigate our exposure to volatility in copper prices. Fluctuations in copper commodity prices impact the value 
of the derivatives that we hold. We are subject to gains which we record as derivative assets if the forward copper commodity prices increase and 
losses which we record as derivative liabilities if they decrease. We record the fair value of the derivative position in the Consolidated Balance 
Sheets. We use COMEX index pricing to support our fair value calculation, which is a Level 2 input per the valuation hierarchy as the pricing is 
for instruments similar but not identical to the contract we will settle. We did not designate the derivative as a cash flow hedge. We record changes 
in the derivative’s fair value currently in earnings based on mark-to-market accounting. The change in earnings is recorded to cost of sales in the 
Consolidated Statements of Income. We do not use derivatives for speculative purposes. 

Historically, actual results have been within management’s expectations.

15

16

2009 
 
 
 
New ACCOuNtiNg pRONOuNCeMeNtS

Commodity Price risk. 

ANNuAl RepORT

In  March  2008,  the  FASB  issued  FASC  Topic  815,  Derivatives  and  Hedging,  formerly  SFAS  No.  161,  (“FASC  815”),  which  requires  enhanced 
disclosures about (i) how and why an entity uses derivative instruments, (ii) how derivative instruments and related hedged items are accounted for 
under prior guidance and (iii) how derivative instruments and related hedged items affect an entity’s financial position, financial performance and 
cash flows.  FASC 815 is effective for financial statements issued for fiscal years and interim periods beginning after November 15, 2008.  Adoption 
of FASC 815 did not have a material impact on our Consolidated Financial Statements.

In June 2009, the FASB issued Accounting Standards Update (“ASU”) 2009-01, Topic 105 - Generally Accepted Accounting Principles (“GAAP”) 
(“ASU 2009-01”), which superseded all accounting standards in U.S. GAAP, aside from those issued by the SEC. The codification does not change 
or alter existing GAAP. ASU 2009-01 is effective for reporting periods ending after September 15, 2009. We adopted ASU 2009-01 for reporting in 
the third quarter of 2009. Adoption of ASU 2009-01 did not have a material impact on our Consolidated Financial Statements.

In August 2009, the FASB issued ASU 2009-05, Fair Value Measurement and Disclosures: Measuring Liabilities at Fair Value (“ASU 2009-05”), which 
provides clarification on measuring liabilities at fair value when a quoted price in an active market is not available. ASU 2009-05 is effective for the 
first reporting period beginning after issuance. We adopted ASU 2009-05 in the fourth quarter of 2009. Adoption of ASU 2009-05 did not have a 
material impact on our Consolidated Financial Statements.

In February 2010, the FASB issued ASU 2010-09, Subsequent Events (“ASU 2010-09”), which discontinues the requirement that entities disclose the 
date through which they have evaluated subsequent events. ASU 2010-09 is effective upon issuance. We adopted ASU 2010-09 for reporting in the 
fourth quarter of 2009. Adoption of ASU 2010-09 did not have a material impact on our Consolidated Financial Statements.

FORwARd-LOOkiNg StAteMeNtS

This Annual Report includes “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Words such 
as “expects”, “anticipates”, “intends”, “plans”, “believes”, “seeks”, “estimates”, “will”, and variations of such words and similar expressions are intended 
to identify such forward-looking statements. These statements are not guarantees of future performance and involve certain risks, uncertainties 
and assumptions, which are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed or forecasted 
in such forward-looking statements. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as 
of the date on which they are made. We undertake no obligations to update publicly any forward-looking statements, whether as a result of new 
information, future events or otherwise. Important factors that could cause results to differ materially from those in the forward-looking statements 
include (1) the timing and extent of changes in raw material and component prices, (2) the effects of fluctuations in the commercial/industrial 
new construction market, (3) the timing and extent of changes in interest rates, as well as other competitive factors during the year, and (4) general 
economic, market or business conditions.

iteM 7A. QuANtitAtiVe ANd QuALitAtiVe diSCLOSuReS ABOut MARket RiSk.

Interest rate risk. 

We are subject to interest rate risk on our revolving credit facility, which bears variable interest based upon the greater of a rate of 4.0% or LIBOR 
plus 2.5%. We had no borrowings outstanding under the revolving credit facility as of December 31, 2009.

Foreign Currency exchange rate risk. 

Foreign sales accounted for less than approximately 5% of our sales in 2009 and we accept payment for such sales in U.S. and Canadian dollars; 
therefore, we believe we are not exposed to significant foreign currency exchange rate risk on these sales. We believe our foreign currency exchange 
rate risk has diminished due to the closure of our manufacturing operations in Canada in September 2009. 

Foreign currency transactions and financial statements are translated in accordance with FASC Topic 830, Foreign Currency Matters. We use the 
U.S. dollar as our functional currency, except for the Canadian subsidiaries, which use the Canadian dollar. Adjustments arising from translation 
of the Canadian subsidiaries’ financial statements are reflected in accumulated other comprehensive income. Transaction gains or losses that arise 
from exchange rate fluctuations applicable to transactions denominated in Canadian currency are included in the results of operations as incurred. 
The exchange rate of the Canadian dollar to the United States dollar was $0.9505, $0.8196 and $1.0193 at December 31, 2009, 2008 and 2007, 
respectively.

We entered into a derivative instrument in the third quarter of 2009 with a large financial institution to mitigate our exposure to volatility in copper 
prices. We monitor our derivative and the credit worthiness  of the financial institution. We do not anticipate losses due to counterparty non-
performance. We do not use derivatives for speculative purposes. 

Fluctuations in copper commodity prices impact the value of the derivative we hold. We are subject to gains which we record as derivative assets 
if the forward copper commodity prices increase and losses which we record as derivative liabilities if they decrease. At December 31, 2009, the 
forward copper commodity prices were higher than our contract price resulting in a gain on derivative assets. The fair value of the derivative 
settlements from January through December 2010 is $2.2 million and recognized as current derivative assets in the Consolidated Balance Sheets. 

We  use  COMEX  index  pricing  to  support  our  fair  value  calculation,  which  is  a  Level  2  input  per  the  valuation  hierarchy  as  the  pricing  is  for 
instruments similar but not identical to the contract we will settle. We did not designate the derivative as a cash flow hedge. We record changes in 
the derivative’s fair value currently in earnings based on mark-to-market accounting. As of December 31, 2009, we recorded a $2.2 million ($1.4 
million net of tax) adjustment to cost of sales from the unrealized gain on derivative assets at fair value in the Consolidated Statements of Income.

Information about our exposure to market risks related to forward copper commodity prices and a sensitivity analysis related to our derivative is 
presented below:

Notional Amount

Carrying amount and fair value of assets

Fair value with a 5% decrease in forward copper commodity prices

Fair value with a 10% decrease in forward copper commodity prices

deCeMBeR 31, 2009

          (in thousands)

      2,250 pounds

      $   2,200

      $   1,822

      $   1,444

The principal components of cost of goods sold are labor, raw materials, component costs, factory overhead, freight out and engineering expense. 
The principal high volume raw materials used in our manufacturing processes are steel, copper and aluminum, which are obtained from domestic 
suppliers. The raw materials market was volatile during 2009 and 2008 due to the economic environment. Prices decreased by approximately 31% 
for steel, 20% for aluminum and 24% for copper from December 31, 2006 to December 31, 2009. We have entered into contracts that are below 
the average index price as of December 31, 2009. The lower commodity prices have contributed to our lower cost of goods sold and higher gross 
margins. 

We are subject to claims and legal actions that arise in the ordinary course of business. Management believes that the ultimate liability from these 
claims and actions, if any, will not have a material effect on our results of operations or financial position.

In addition to the derivative instrument described above, we attempt to limit the impact of price fluctuations on these materials by entering into 
cancelable and noncancelable fixed price contracts with our major suppliers for periods of 6 - 18 months. We expect to receive delivery of raw 
materials from our fixed price contracts for use in our manufacturing operations. These contracts are not accounted for as derivative instruments 
since they meet the normal purchases and sales exemption. 

We  do  not  utilize  derivative  financial  instruments  to  hedge  our  interest  rate  or  foreign  currency  exchange  rate  risk.  We  do  use  derivatives  to 
economically hedge our commodity price risk.

iteM 8. FiNANCiAL StAteMeNtS ANd SuppLeMeNtARy dAtA.

The financial statements and supplementary data are included commencing at page 27.

17

18

2009 
iteM 9. CHANgeS iN ANd diSAgReeMeNtS witH ACCOuNtANtS ON ACCOuNtiNg 
ANd FiNANCiAL diSCLOSuRe.

None.

iteM 9A. CONtROLS ANd pROCeduReS.

(A) eVALuAtiON OF diSCLOSuRe CONtROLS ANd pROCeduReS

At the end of the period covered by this Annual Report on Form 10-K, our management, under the supervision and with the participation of our 
Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the design and operation of our disclosure controls and 
procedures. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer believe that:

• Our disclosure controls and procedures are designed to ensure that information required to be disclosed by us in the reports we file 
under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the 
SEC’s rules and forms; and

• Our disclosure controls and procedures operate such that important information flows to appropriate collection and disclosure points 
in  a  timely  manner  and  are  effective  to  ensure  that  such  information  is  accumulated  and  communicated  to  our  management,  and 
made known to our Chief Executive Officer and Chief Financial Officer, particularly during the period when this Annual Report was 
prepared, as appropriate to allow timely decisions regarding the required disclosure.

AAON’s  Chief  Executive  Officer  and  Chief  Financial  Officer  have  evaluated  our  disclosure  controls  and  procedures  and  concluded  that  these 
controls and procedures were effective as of December 31, 2008.

(B) MANAgeMeNt’S ANNuAL RepORt ON iNteRNAL CONtROL OVeR FiNANCiAL RepORtiNg

The  management  of  AAON,  Inc.  and  our  subsidiaries  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial 
reporting. Our internal control system was designed to provide reasonable assurance to our management and Board of Directors regarding the 
preparation and fair presentation of published financial statements.

All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems determined to be effective can 
provide only reasonable assurance with respect to financial statement preparation and presentation.

In  making  our  assessment  of  internal  control  over  financial  reporting,  management  used  the  criteria  issued  by  the  Committee  of  Sponsoring 
Organizations of the Treadway Commission (COSO) in Internal Control—Integrated Framework. Based on our assessment, we believe that, as of 
December 31, 2009, our internal control over financial reporting is effective at the reasonable assurance level based on those criteria.

Our independent registered public accounting firm has issued an attestation report on our internal control over financial reporting.

Date: March 15, 2010 

/s/ Norman H. Asbjornson
Norman H. Asbjornson
Chief Executive Officer

/s/ Kathy I. Sheffield
Kathy I. Sheffield
Chief Financial Officer

ANNuAl RepORT

(C) RepORt OF iNdepeNdeNt RegiSteRed puBLiC ACCOuNtiNg FiRM

report of Independent registered Public Accounting Firm

Board of Directors and Stockholders
AAON, Inc.

We have audited AAON, Inc. (a Nevada Corporation) and subsidiaries (collectively referred to as the “Company”), internal control over financial 
reporting as of December 31, 2009, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring 
Organizations  of  the  Treadway  Commission  (COSO).  The  Company’s  management  is  responsible  for  maintaining  effective  internal  control 
over  financial  reporting  and  for  its  assessment  of  the  effectiveness  of  internal  control  over  financial  reporting,  included  in  the  accompanying 
Management’s Annual Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal 
control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards 
require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was 
maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk 
that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and 
performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our 
opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial 
reporting  and  the  preparation  of  financial  statements  for  external  purposes  in  accordance  with  generally  accepted  accounting  principles.  A 
company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in 
reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that 
transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, 
and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the 
company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the 
company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any 
evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that 
the degree of compliance with the policies or procedures may deteriorate.

In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2009, based 
on criteria established in Internal Control—Integrated Framework issued by COSO.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated 
balance sheets of AAON, Inc. and subsidiaries, as of December 31, 2009 and 2008, and the related consolidated statements of income, stockholders’ 
equity and comprehensive income, and cash flows for each of the three years in the period ended December 31, 2009 and our report dated March 
15, 2010, expressed an unqualified opinion on those consolidated financial statements.

/s/ GRANT THORNTON LLP
Tulsa, Oklahoma
March 15, 2010

(d) CHANgeS iN iNteRNAL CONtROL OVeR FiNANCiAL RepORtiNg

There  have  been  no  changes  in  internal  control  over  financial  reporting  that  occurred  during  the  fourth  quarter  of  2009  that  have  materially 
affected, or are reasonably likely to materially affect, our internal control over financial reporting.

iteM 9B. OtHeR iNFORMAtiON.

None.

19

20

2009 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
pARt 3

iteM 10. diReCtORS, exeCutiVe OFFiCeRS ANd CORpORAte gOVeRNANCe. 

The information required by Items 401, 405, 406 and 407(c)(3), (d)(4) and (d)(5) of Regulation S-K is incorporated by reference to the information 
contained in our definitive Proxy Statement to be filed with the Securities and Exchange Commission in connection with our 2010 Annual Meeting 
of Stockholders.

COde OF etHiCS

We adopted a code of ethics that applies to our principal executive officer, principal financial officer and principal accounting officer or persons 
performing similar functions, as well as other employees and directors. We will provide any person without charge, upon request, a copy of such 
code of ethics. Requests may be directed to AAON, Inc., 2425 South Yukon Avenue, Tulsa, Oklahoma 74107, attention Kathy I. Sheffield, or by 
calling (918) 382-6204.

iteM 11. exeCutiVe COMpeNSAtiON.

The information required by Items 402 and 407(e)(4) and (e)(5) of Regulation S-K is incorporated by reference to the information contained in our 
definitive Proxy Statement to be filed with the Securities and Exchange Commission in connection with our 2010 Annual Meeting of Stockholders. 

iteM 12. SeCuRity OwNeRSHip OF CeRtAiN BeNeFiCiAL OwNeRS ANd MANAgeMeNt 
ANd ReLAted StOCkHOLdeR MAtteRS.

The information required by Item 403 and Item 201(d) of Regulation S-K is incorporated by reference to the information contained in our definitive 
Proxy Statement to be filed with the Securities and Exchange Commission in connection with our 2010 Annual Meeting of Stockholders. 

iteM 13. CeRtAiN ReLAtiONSHipS ANd ReLAted tRANSACtiONS.

tRANSACtiONS witH ReLAted peRSONS

Our Code of Conduct guides the Board of Directors in its actions and deliberations with respect to related party transactions. Under the Code, 
conflicts  of  interest,  including  any  involving  the  directors  or  any  Named  Officers,  are  prohibited  except  under  any  guidelines  approved  by  the 
Board of Directors. Only the Board of Directors may waive a provision of the Code of Conduct for a director or a Named Officer, and only then in 
compliance with all applicable laws, rules and regulations. We did not enter into any new related party transactions and have no preexisting related 
party transactions in 2009, 2008 or 2007.

ANNuAl RepORT

Our director independence standards are as follows:

It is the policy of the Board that a majority of the members of the Board consist of directors independent of the Company and of our management. 
For a director to be deemed “independent,” the Board shall affirmatively determine that the director has no material relationship with us or our 
affiliates or any member of the senior management or his or her affiliates. In making this determination, the Board applies, at a minimum and 
in  addition  to  any  other  standards  for  independence  established  under  applicable  statutes  and  regulations  as  outlined  by  the  NASDAQ  listing 
standards Rule 4200, the following standards, which it may amend or supplement from time to time:

• A director who is, or has been within the last three years, an employee of the Company, or whose immediate family member is, or 
has been within the last three years a Named Officer, cannot be deemed independent. Employment as an interim Chairman or Chief 
Executive Officer will not disqualify a director from being considered independent following that employment.

• A director who has received, or who has an immediate family member who has received, during any twelve-month period within the 
last three years, more than $120,000 in direct compensation from us, other than director and committee fees and benefits under a 
tax-qualified retirement plan, or non-discretionary compensation for prior service (provided such compensation is not contingent in 
any way on continued service), cannot be deemed independent. Compensation received by a director for former service as an interim 
Chairman  or  Chief  Executive  Officer  and  compensation  received  by  an  immediate  family  member  for  service  as  one  of  our  non-
executive employees will not be considered in determining independence under this test.

• A director who (A) is, or whose immediate family member is, a current partner of a firm that is our external auditor; (B) is a current 
employee of such a firm; or (C) was, or whose immediate family member was, within the last three years (but is no longer) a partner or 
employee of such a firm and personally worked on our audit within that time cannot be deemed independent.

• A director who is, or whose immediate family member is, or has been within the last three years, employed as an executive officer of 
another company where any of our present Named Officers at the time serves or served on that company’s compensation committee 
cannot be deemed independent.

• A director who is a current employee or general partner, or whose immediate family member is a current executive officer or general 
partner, of an entity that has made payments to, or received payments from us for property or services in an amount which, in any of 
the last three fiscal years, exceeds the greater of $200,000 or 5% of such other entity’s consolidated gross revenues, other than payments 
arising solely from investments in our securities or payments under non-discretionary charitable contribution matching programs, 
cannot be deemed independent.

For purposes of the independence standards set forth above, the terms:

•  “affiliate”  means  any  of  our  consolidated  subsidiaries  and  any  other  company  or  entity  that  controls,  is  controlled  by  or  is  under 

common control with us;

diReCtOR iNdepeNdeNCe

• “executive officer” means an “officer” within the meaning of Rule 16a-1(f) under the Securities Exchange Act of 1934, as amended; and

The  Board  of  Directors  (“Board”)  has  adopted  director  independence  standards  that  meet  and/or  exceed  listing  standards  set  by  NASDAQ. 
NASDAQ has set forth six applicable tests and requires that a director who fails any of the tests be deemed not independent. In 2009, the Board 
affirmatively determined, considering the standards described more fully below, that Messrs. Short, Lackey, McElroy, Stephenson, and Levine are 
independent. As a result of his position as our President, Mr. Asbjornson does not qualify as independent under the standards set forth below.  The 
Board has determined that Mr. Johnson should not be deemed independent, because he is a member of the law firm that serves as our General 
Counsel. In addition, each member of the Audit Committee and the Compensation Committee is independent.

• “immediate family” means spouse, parents, children, siblings, mothers- and fathers-in-law, sons- and daughters-in-law, brothers- and 
sisters-in-law and anyone (other than employees) sharing a person’s home, but excluding any person who is no longer an immediate 
family member as a result of legal separation or divorce, death or incapacitation.

The Board undertakes an annual review of the independence of all non-employee directors. In advance of the meeting at which this review occurs, 
each non-employee director is asked to provide the Board with full information regarding the director’s business and other relationships with us 
and our affiliates and with senior management and their affiliates to enable the Board to evaluate the director’s independence.

Directors have an affirmative obligation to inform the Board of any material changes in their circumstances or relationships that may impact their 
designation by the Board as “independent.” This obligation includes all business relationships between, on the one hand Directors or members of 
their immediate family, and, on the other hand, us and our affiliates or members of senior management and their affiliates, whether or not such 
business relationships are subject to any other approval requirements.

iteM 14. pRiNCipAL ACCOuNtANt FeeS ANd SeRViCeS.

Incorporated by reference to our definitive Proxy Statement to be filed with the Securities and Exchange Commission in connection with our 2010 
Annual Meeting of Stockholders.

21

22

2009ANNuAl RepORT

SigNAtuReS

Pursuant to the requirement of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report 
to be signed on its behalf by the undersigned, hereunto duly authorized.

Dated:  March 15, 2010 

AAON, INC.

By: 

/s/ Norman H. Asbjornson
Norman H. Asbjornson, President

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this report has been signed below by the following persons on 
behalf of the Registrant and in the capacities and on the dates indicated.

pARt 4

iteM 15. exHiBitS ANd FiNANCiAL StAteMeNt SCHeduLeS.

(a) 

Financial statements.

See Index to Consolidated Financial Statements on page 25.

(b) 

Exhibits:

(A) 
(A-1) 
(B) 
(B-1) 

(A) 
(A-1) 
(B) 

(3) 

(4) 

(10.1) 

(10.2) 

(21) 

(23) 

(31.1) 

(31.2) 

(32.1) 

(32.2) 

Articles of Incorporation (i)
Article Amendments (ii)
Bylaws (i)
Amendments of Bylaws (iii)

Third Restated Revolving Credit and Term Loan Agreement and related documents (iv)
Fifth Amendment to Third Restated Revolving Credit and Term Loan Agreement (v)
Rights Agreement dated February 19, 1999, as amended (vi)

AAON, Inc. 1992 Stock Option Plan, as amended (vii)

AAON, Inc. 2007 Long-Term Incentive Plan, as amended (viii)

List of Subsidiaries (ix)

Consent of Grant Thornton LLP

Certification of CEO

Certification of CFO

Section 1350 Certification – CEO

Section 1350 Certification – CFO

(i) 

(ii) 

(iii) 

Incorporated herein by reference to the exhibits to our Form S-18 Registration Statement No. 33-18336-LA.

Incorporated  herein  by  reference  to  the  exhibits  to  our  Annual  Report  on  Form  10-K  for  the  fiscal  year  ended 
December 31, 1990, and to our Forms 8-K dated March 21, 1994, March 10, 1997, and March 17, 2000.

Incorporated  herein  by  reference  to  our  Forms  8-K  dated  March  10,  1997,  May  27,  1998  and  February  25,  
1999, or exhibits thereto.

(iv) 

Incorporated by reference to exhibit to our Form 8-K dated July 30, 2004.

(v) 

Incorporated herein by reference to exhibit to our Form 8-K dated August 13, 2009.

Dated:  March 15, 2010 

Dated:  March 15, 2010 

Dated:  March 15, 2010 

Dated:  March 15, 2010 

Dated:  March 15, 2010 

Dated:  March 15, 2010 

(vi) 

(vii) 

(viii) 

(ix) 

Incorporated  by  reference  to  exhibits  to  our  Forms  8-K  dated  February  25,  1999,  and  August  20,  2002,  and  
Form 8-A Registration Statement No. 000-18953, as amended.

Incorporated  herein  by  reference  to  exhibits  to  our  Annual  Report  on  Form  10-K  for  the  fiscal  year  ended  
December 31, 1991, and to our Form S-8 Registration Statement No. 33-78520, as amended.

Dated:  March 15, 2010 

Incorporated  herein  by  reference  to  Appendix  B  to  our  definitive  Proxy  Statement  for  the  2007  Annual  
Meeting of Stockholders filed April 23, 2007.

Incorporated  herein  by  reference  to  exhibits  to  our  Annual  Report  on  Form  10-K  for  the  fiscal  year  ended  
December 31, 2004.

Dated:  March 15, 2010

/s/ Norman H. Asbjornson
Norman H. Asbjornson
President and Director
(principal executive officer)

/s/ Kathy I. Sheffield
Kathy I. Sheffield
Vice President and Treasurer
(principal financial officer
and principal accounting officer)

/s/ John B. Johnson, Jr.
John B. Johnson, Jr. 
Director

/s/ Charles C. Stephenson, Jr.
Charles C. Stephenson, Jr.
Director

/s/ Jack E. Short
Jack E. Short
Director

/s/ Paul K. Lackey, Jr.
Paul K. Lackey, Jr.
Director

/s/ A.H. McElroy II
A.H. McElroy II
Director

/s/ Jerry R. Levine
Jerry R. Levine
Director

23

24

2009 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
iNdex tO CONSOLidAted FiNANCiAL StAteMeNtS

report of grant Thornton LLP Independent registered Public Accounting Firm

ANNuAl RepORT

Report of Grant Thornton LLP Independent Registered Public Accounting Firm  

Consolidated Balance Sheets   

Consolidated Statements of Income 

Consolidated Statements of Stockholders’ Equity and Comprehensive Income 

Consolidated Statements of Cash Flows  

Notes to Consolidated Financial Statements 

pAge

26

27

28

29

30

31

Board of Directors and Stockholders 
AAON, Inc. 

We have audited the accompanying consolidated balance sheets of AAON, Inc. (a Nevada Corporation) and subsidiaries (collectively referred to 
as the “Company”) as of December 31, 2009 and 2008, and the related consolidated statements of income, stockholders’ equity and comprehensive 
income, and cash flows for each of the three years in the period ended December 31, 2009. These financial statements are the responsibility of the 
Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits. 

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards 
require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. 
An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes 
assessing  the  accounting  principles  used  and  significant  estimates  made  by  management,  as  well  as  evaluating  the  overall  financial  statement 
presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of AAON, Inc. 
and subsidiaries as of December 31, 2009 and 2008, and the results of its operations and its cash flows for each of the three years in the period ended 
December 31, 2009 in conformity with accounting principles generally accepted in the United States of America. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), AAON, Inc. and 
subsidiaries  internal  control  over  financial  reporting  as  of  December  31,  2009,  based  on  criteria  established  in  Internal  Control  -  Integrated 
Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) and our report dated, March 15, 2010, 
expressed an unqualified opinion on the effectiveness of internal control over financial reporting. 

/s/ GRANT THORNTON LLP
Tulsa, Oklahoma
March 15, 2010

25

26

2009 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
AAON, iNC., ANd SuBSidiARieS  
CONSOLidAted BALANCe SHeetS

AAON, iNC., ANd SuBSidiARieS  
CONSOLidAted StAteMeNtS OF iNCOMe

ANNuAl RepORT

Net sales

Cost of sales

Gross profit

Selling, general and administrative expenses

Income from operations

Interest expense 

Interest income

Other income (expense), net 

Income before income taxes

Income tax provision

Net income

Earnings per share:

Basic

Diluted

Cash dividends declared per common share

Weighted average shares outstanding:

Basic

Diluted

yeARS eNdiNg deCeMBeR 31,               

2009

2008

2007

(in thousands, except per share data)

$ 

245,282   $ 

279,725   $ 

262,517

       177,737

       212,549

       205,148

         67,545

         67,176

         57,369

         23,791

         23,788

         21,703

         43,754

         43,388

         35,666

  (9) 

71

76

  (71) 

             (10) 

27

8

724           

(321)

         43,892

         44,068

         35,343

         16,171

         15,479

         12,187

27,721 $ 

28,589 $ 

23,156

1.61 $ 

1.60 $ 

0.36 $ 

1.63 $ 

1.60 $ 

0.32 $ 

1.24*

1.22*

0.32*

17,187

17,309

17,560

17,855

18,628*

18,927*

$ 

$ 

$ 

$ 

* Reflects three-for-two stock split effective August 21, 2007.

The accompanying notes are an integral part of these statements.

           2008
                                                                                                                                                                              (in thousands, except share and per share data)

deCeMBeR 31,
2009

deCeMBeR 31,

Assets
Current Assets:

Cash and cash equivalents
Accounts receivable, net
Inventories, net
Prepaid expenses and other
Derivative assets
Assets held for sale, net
Deferred tax assets

Total Current Assets

Property, plant and equipment:
Land
Buildings
Machinery and equipment
Furniture and fixtures

Total property, plant and equipment
Less: Accumulated depreciation
Property, plant and equipment, net

Note receivable, long-term

Total assets
Liabilities and Stockholders’ Equity

Current liabilities:

Revolving credit facility
Current maturities of long-term debt
Accounts payable
Dividends payable
Accrued liabilities
Total current liabilities
Long-term debt, less current maturities
Deferred tax liabilities
Commitments and Contingencies (See Note 10)
Stockholders’ equity:

Preferred stock, $.001 par value, 7,500,000 
shares authorized, no shares issued

Common stock, $.004 par value, 75,000,000 shares authorized, 
17,214,979 and 17,208,733 issued and outstanding at December 31, 
2009 and 2008, respectively

Additional paid in capital
Accumulated other comprehensive income, net of tax
Retained earnings

Total stockholders’ equity

Total liabilities and stockholders’ equity

$ 

$ 

$ 

$ 

25,639 
33,381
28,788
1,087
2,200
1,522
3,623
96,240

1,328
41,697
90,213
7,225
140,463
80,567
59,896
75

156,211 

- 
76
8,524
3,100
19,186
30,886
-
7,326

-

71

644
1,077
116,207

117,999

156,211 

$ 

$ 

$ 

269
38,804
36,382
428
-
-
4,235
80,118

2,153
36,371
87,219
7,076
132,819
72,269
60,550
75

140,743

  2,901
91
14,715
2,773
19,038
39,518
121
4,582

-

71

538
778
95,135

96,522

$ 

140,743

The accompanying notes are an integral part of these statements.

27

28

2009 
 
 
 
 
 
 
 
AAON, iNC., ANd SuBSidiARieS  
CONSOLidAted StAteMeNtS OF StOCkHOLdeRS’ eQuity ANd COMpReHeNSiVe iNCOMe

AAON, iNC., ANd SuBSidiARieS
CONSOLidAted StAteMeNtS OF CASH FLOwS

ANNuAl RepORT

COMMON StOCk
SHAReS       AMOuNt

pAid-iN
CApitAL

ACCuMuLAted
OtHeR 
COMpReHeNSiVe 
iNCOMe

RetAiNed 
eARNiNgS

tOtAL

18,508*  

$ 

74*      $      185 

               $       667   $    90,666     $      91,592

(in thousands)

(396)

(396)

–

–

613*

–
(1,067)*
–
18,054*

–

–

366

–
(1,211)
–
17,209

–

–

170

–
(164)
–

17,215  

  $ 

–

–

4*

–
(5)*
–
73*

–

–

2

–
(4)
–
  71

–

–

1

–

–

5,420

         582
      (6,187)
–
–

–

–

3,307

750
(3,519)
–
      538 

             –

–

1,938

–
(1)
–

          848
(2,680)
–
  71      $      644 

–

23,156

                –
      (14,581)
(5,440)
93,405

         582
   (20,773)
(5,440)
     95,420

–

28,589

23,156

1,275

24,431

5,424

28,589

(1,164)

27,425

3,309

–

–

–

–

–
(21,238)
(5,621)
   95,135

750
(24,761)
   (5,621)   
   96,522

1,275

–

–
–
–
1,942

(1,164)

–

–
–
–
       778

–

       27,721

27,721

299

–

–

–

299

28,020

1,939

 848
   (3,129)
     (6,201)
                  $     1,077   $  116,207   $  117,999

–
(448)
(6,201)

–
–
–

Balance at December 31, 2006
Adjustment for FASC Topic 740,  
      Income Taxes
Comprehensive income:

Net income
Foreign currency translation  
adjustment

Total comprehensive income     

Stock options exercised,
including tax benefits

Share-based compensation
Stock repurchased and retired
Dividends 
Balance at December 31, 2007

Comprehensive income:

Net income
Foreign currency translation

adjustment

Total comprehensive income
Stock options exercised, and 
      restricted stock awards vested

including tax benefits
Share-based compensation
Stock repurchased and retired
Dividends
Balance at December 31, 2008
Comprehensive income:

Net income

Foreign currency translation
adjustment

Total comprehensive income

Stock options exercised and

restricted stock awards vested,  
including tax benefits
Share-based compensation
Stock repurchased and retired
Dividends 
Balance at December 31, 2009

* Reflects three-for-two stock split effective August 21, 2007

The accompanying notes are an integral part of these statements.

29

OpeRAtiNg ACtiVitieS

Net income 

Adjustments to reconcile net income to net cash provided

by operating activities:

Depreciation

Provision for losses on accounts receivable, net of adjustments 

Provision for excess and obsolete inventories

Share-based compensation

Excess tax benefits from stock options exercised and

restricted stock awards vested

Gain on disposition of assets

Unrealized gain on derivative assets

Deferred income taxes

Changes in assets and liabilities:

Accounts receivable

Inventories

Prepaid expenses and other

Accounts payable

Accrued liabilities

Net cash provided by operating activities

iNVeStiNg ACtiVitieS

Proceeds from sale of property, plant and equipment

Capital expenditures

Net cash used in investing activities

FiNANCiNg ACtiVitieS

Borrowings under revolving credit facility

Payments under revolving credit facility

Borrowings (payments) of long-term debt

Stock options exercised

Excess tax benefits from stock options exercised and  
    restricted stock awards vested

Repurchase of stock

Cash dividends paid to stockholders

Net cash used in financing activities

effects of exchange rate on cash

Net increase (decrease) in cash and cash equivalents

Cash and cash equivalents, beginning of year

Cash and cash equivalents, end of year

yeARS eNded deCeMBeR 31,

2009

2008

2007

(in thousands)

$      27,721 $      28,589 $      23,156

9,061

9,412

9,665

10

410

848

(703)

(59)

(2,200)

3,531

5,495

7,243

(660)

(6,334)

842

45,205

135

(9,774)

(9,639)

547

-

750

(1,613)

(27)

-

160

(905)

(4,779)

13

449

851

33,447

17

(9,610)

(9,593)

203

-

582

(2,998)

(108)

-

(124)

(1,760)

(2,095)

(172)

(1,370)

6,268

31,247

123

(10,874)

(10,751)

9,972

46,865

12,142

(12,873)

(43,964)

(12,142)

(136)

1,236

703

(3,129)

(5,874)

(118)

1,696

1,613

(24,761)

(5,791)

(10,101)

(24,460)

(95)

25,370

269

(4)

(610)

879

271

2,426

2,998

(20,773)

(4,958)

(20,036)

131

591

288

$      25,639 $            269 $            879

The accompanying notes are an integral part of these statements.

30

2009AAON, iNC., ANd SuBSidiARieS
NOteS tO CONSOLidAted FiNANCiAL StAteMeNtS

1. BuSiNeSS, SuMMARy OF SigNiFiCANt ACCOuNtiNg pOLiCieS ANd OtHeR 
FiNANCiAL dAtA (CONtiNued)

ANNuAl RepORT

deCeMBeR 31, 2009

1. BuSiNeSS, SuMMARy OF SigNiFiCANt ACCOuNtiNg pOLiCieS ANd OtHeR 
FiNANCiAL dAtA

AAON, Inc. is a Nevada corporation which was incorporated on August 18, 1987. Our subsidiaries include AAON, Inc., an Oklahoma corporation, 
AAON Coil Products, Inc., a Texas corporation, AAON Canada, Inc., an Ontario corporation and AAON Properties, Inc., an Ontario corporation. 
AAON Properties is the lessor of property in Burlington, Ontario, Canada, to AAON Canada. The Consolidated Financial Statements include our 
accounts and the accounts of our subsidiaries. Unless the context otherwise requires, references in this Annual Report to “AAON,” the “Company”, 
“we,” “us,” “our” or “ours” refer to AAON, Inc., and our subsidiaries.

We  closed  our  manufacturing  operations  and  reclassified  our  Canadian  facility  as  held  for  sale  in  September  2009.  The  products  previously 
manufactured at the Canadian facility will be produced by the Tulsa, Oklahoma, and Longview, Texas, facilities in the future.

We are engaged in the manufacture and sale of air conditioning and heating equipment consisting of rooftop units, chillers, air-handling units, 
make-up air units, heat recovery units, condensing units and coils. All significant intercompany accounts and transactions have been eliminated.

ReVeNue ReCOgNitiON

We recognize revenues from sales of products when the products are shipped and the title and risk of ownership pass to the customer. Selling prices 
are fixed based on purchase orders or contractual agreements. Sales allowances and customer incentives are treated as reductions to sales and are 
provided for based on historical experiences and current estimates. For sales initiated by independent manufacturer representatives, we recognize 
revenues net of the representatives’ commission. Our policy is to record the collection and payment of sales taxes through a liability account.

COMMON StOCk SpLit

On July 12, 2007, our Board of Directors approved a three-for-two stock split of the outstanding stock for shareholders of record as of August 3, 
2007. The stock split was treated as a 50% stock dividend which was distributed on August 21, 2007. The applicable share and per share data for 
2007 included herein has been restated to reflect the stock split.

CuRReNCy

Foreign  currency  transactions  and  financial  statements  are  translated  in  accordance  with  Financial  Accounting  Standards  Board  (“FASB”) 
Codification (“FASC”) Topic 830, Foreign Currency Matters. We use the U.S. dollar as our functional currency, except for the Canadian subsidiaries, 
which use the Canadian dollar. Adjustments arising from translation of the Canadian subsidiaries’ financial statements are reflected in accumulated 
other comprehensive income. Transaction gains or losses that arise from exchange rate fluctuations applicable to transactions denominated in 
Canadian currency are included in the results of operations as incurred.

uSe OF eStiMAteS

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management 
to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at 
the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Because these estimates and 
assumptions require significant judgment, future actual results could differ from those estimates and could have a significant impact on our results 
of operations, financial position and cash flows. We reevaluate our estimates and assumptions on a monthly basis. The most significant estimates 
include the allowance for doubtful accounts, inventory reserves, warranty accrual, medical insurance accrual, share-based compensation and the 
fair value of the derivative. Actual results could differ materially from those estimates.

CONCeNtRAtiONS

Our customers are concentrated primarily in the domestic commercial and industrial new construction and replacement markets. To date, our sales 
have been primarily to the domestic market, with foreign sales accounting for less than 5% of revenues in 2009. No customer accounted for 10% of 
our sales during 2009, 2008 or 2007 or more than 5% of our accounts receivable balance at December 31, 2009, 2008 or 2007.

CASH ANd CASH eQuiVALeNtS

Cash and cash equivalents consist of bank deposits and highly liquid, interest-bearing money market funds with initial maturities of three months 
or less.

ACCOuNtS ReCeiVABLe

We grant credit to our customers and perform ongoing credit evaluations. We generally do not require collateral or charge interest. We establish 
an allowance for doubtful accounts based upon factors surrounding the credit risk of specific customers, historical trends, economic and market 
conditions and the age of the receivable. Accounts are considered past due when the balance has been outstanding for greater than ninety days. Past 
due accounts are generally written off against the allowance for doubtful accounts only after all collection attempts have been exhausted.

Accounts receivable and the related allowance for doubtful accounts are as follows:

Accounts receivable

Less: Allowance for doubtful accounts

Total, net

Allowance for doubtful accounts:

Balance, beginning of period

Provision for losses on accounts receivable

Adjustments to provision

Accounts receivable written off, net of recoveries

Balance, end of period

deCeMBeR 31,

2009

2008

(in thousands)

$ 

$ 

34,157  

(776)

33,381  

$ 

$ 

39,599

(795)

38,804

yeARS eNded deCeMBeR 31,

2009

2008

2005

(in thousands)

$ 

$ 

795

629

(630)

(18)

776

$ 

$ 

407

674

(127)

(159)

$ 

795

$ 

266

625

(422)

(62)

407

31

32

2009 
 
 
 
 
 
 
 
1. BuSiNeSS, SuMMARy OF SigNiFiCANt ACCOuNtiNg pOLiCieS ANd OtHeR 
FiNANCiAL dAtA (CONtiNued)

1. BuSiNeSS, SuMMARy OF SigNiFiCANt ACCOuNtiNg pOLiCieS ANd OtHeR 
FiNANCiAL dAtA (CONtiNued)

ANNuAl RepORT

iNVeNtORieS

Inventories are valued at the lower of cost or market. Cost is determined by the first-in, first-out (“FIFO”) method. We establish an allowance for 
excess and obsolete inventories based on product line changes, the feasibility of substituting parts and the need for supply and replacement parts.

Inventory balances at December 31, 2009 and 2008, and the related changes in the allowance for excess and obsolete inventories for the three years 
ended December 31, 2009, 2008 and 2007, are as follows:

Raw materials

Work in process

Finished goods

Less: Allowance for excess and obsolete inventories

Total, net

deCeMBeR 31,

2009

2008

(in thousands)

$ 

26,581 $ 

32,212

         1,835

         1,132

       29,548

(760)

         2,545

         1,975

       36,732

(350)

$ 

28,788  

$ 

36,382

yeARS eNded deCeMBeR 31,

2009

2008

2007

(in thousands)

Allowance for excess and obsolete inventories:

Balance, beginning of period

$            350

$            350

$            350

Provision for excess and obsolete inventories

Adjustments to reserve

Balance, end of period

1,849

(1,439)

800

(800)

-

-

$          760

$            350

$            350

We increased our allowance for excess and obsolete inventories due to materials from our Canadian facility that will not be utilized at either our 
Tulsa, Oklahoma or Longview, Texas locations and materials that were phased out due to new products that were introduced in January 2010.

deRiVAtiVe

We entered into a derivative instrument in the third quarter of 2009 with a large financial institution to mitigate our exposure to volatility in copper 
prices. We monitor our derivative and the credit worthiness  of the financial institution. We do not anticipate losses due to counterparty non-
performance. We do not use derivatives for speculative purposes. 

The derivative is in the form of a commodity futures contract. The derivative contract settles monthly beginning in January 2010 and ending in 
December 2010. Settlements equal the difference between the monthly average market price or closing market price of copper on a given day and 
the contract price with the financial institution. The contract is for a total of 2,250,000 pounds of copper at $2.383 per pound. The contract is for 
quantities equal to or less than those expected to be used in our manufacturing operations in 2010. 

We  are  subject  to  gains  which  we  record  as  derivative  assets  if  the  forward  copper  commodity  prices  increase  and  losses  which  
we record as derivative liabilities if they decrease. At December 31, 2009, the forward copper commodity prices were higher than our contract 
price resulting in a gain or derivative asset. We recognized the following current derivative assets at fair value in the Consolidated Balance Sheets:

type OF CONtRACt

BALANCe SHeet LOCAtiON

Derivatives not designated as hedging instruments:

Commodity futures contract

Derivative assets 

Total Derivatives not designated as hedging instruments

 FAiR VALue

(in thousands)

      $            2,200

      $            2,200

We did not designate the derivative as a cash flow hedge. We record changes in the derivative’s fair value currently in earnings based on mark-
to-market  accounting.  We  recorded  the  following  $2.2  million  ($1.4  million  after  tax)  unrealized  gain  on  derivative  assets  at  fair  value  in  the 
Consolidated Statements of Income:

type OF CONtRACt

iNCOMe StAteMeNt LOCAtiON

FAiR VALue

Derivatives not designated as hedging instruments:

Commodity futures contract

Cost of Sales

Total Derivatives not designated as hedging instruments

(in thousands)

$            2,200

$            2,200

We  use  COMEX  index  pricing  to  support  our  fair  value  calculation,  which  is  a  Level  2  input  per  the  valuation  hierarchy  as  the  pricing  is  for 
instruments similar but not identical to the contract we will settle.

ASSetS HeLd FOR SALe

We  reclassified  certain  fixed  assets  with  a  net  book  value  of  $1.5  million  to  assets  held  for  sale  upon  closure  of  our  Canadian  manufacturing 
operations in September 2009. The assets consist of a building and land valued at the lower of cost or market. The carrying value of the building net 
of accumulated depreciation is $0.6 million. No additional depreciation expense was taken on the building as of October 1, 2009. The carrying value 
of the land is $0.9 million. We have contracted with a realtor and plan to sell the property within one year. The products previously manufactured 
at the Canadian facility will be produced by the Tulsa, Oklahoma and Longview, Texas facilities in the future.

pROpeRty, pLANt ANd eQuipMeNt

Property, plant and equipment are stated at cost. Maintenance and repairs, including replacement of minor items, are charged to 
expense as incurred; major additions to physical properties are capitalized. Property, plant and equipment are depreciated using the 
straight-line method over the following estimated useful lives:

deSCRiptiON

Buildings

Machinery and Equipment

Furniture and Fixtures

yeARS

10-40

3-15

2-5

33

34

2009 
 
 
1. BuSiNeSS, SuMMARy OF SigNiFiCANt ACCOuNtiNg pOLiCieS ANd OtHeR 
FiNANCiAL dAtA (CONtiNued)

1. BuSiNeSS, SuMMARy OF SigNiFiCANt ACCOuNtiNg pOLiCieS ANd OtHeR 
FiNANCiAL dAtA (CONtiNued)

iMpAiRMeNt OF LONg-LiVed ASSetS

Changes in the warranty accrual during the years ended December 31, 2009, 2008 and 2007 are as follows:

ANNuAl RepORT

We evaluate long-lived assets for impairment when events or changes in circumstances indicate, in management’s judgment, that the carrying 
value of such assets may not be recoverable. When an indicator of impairment has occurred, management’s estimate of undiscounted cash flows 
attributable to the assets is compared to the carrying value of the assets to determine whether impairment has occurred. If an impairment of the 
carrying value has occurred, the amount of the impairment recognized in the financial statements is determined by estimating the fair value of the 
assets and recording a loss for the amount that the carrying value exceeds the estimated fair value. Management determined no impairment was 
required during 2009, 2008 and 2007.

COMMitMeNtS ANd CONtRACtuAL AgReeMeNtS

We are a party to several short-term, cancelable and noncancelable, fixed price contracts with major suppliers for the purchase of raw material and 
component parts. We expect to receive delivery of raw materials from our fixed price contracts for use in our manufacturing operations. These 
contracts are not accounted for as derivative instruments because they meet the normal purchases and sales exemption. 

In the normal course of business we expect to purchase copper and aluminum in the form of legally binding commitments as follows: 

type

peRiOd

pOuNdS

pRiCe

tOtAL

Aluminum

Copper

Copper

Copper

Copper

Total

(in  thousands, except pricing data)

January 2010 – December 2010

January 2010 – March 2010  

January 2010 

January 2010 

January 2010 

2,441

102

23

24

19

    0.8000

2.4090

2.0225

    1.8315

2.2458

$   1,953

245

47

        45

42

             $   2,332

ACCRued LiABiLitieS

At December 31, accrued liabilities were comprised of the following:

Warranty

Commissions

Payroll

Workers’ compensation

Medical self-insurance

Employee benefits and other

Total

wARRANtieS

2009

2008

(in thousands)

$ 

  7,200

$ 

  6,589

    7,975

    1,633

           591

         1,410

          377

    8,816

    1,883

           610

           886

           254

$ 

19,186

$ 

19,038

A provision is made for estimated warranty costs at the time the related products are sold based upon the warranty period, historical trends, new 
products and any known identifiable warranty issues. Despite lower sales volume in 2009 compared to 2008 warranty expenses increased due to 
specific warranty items. Warranty expense was $4.8 million, $4.0 million and $4.0 million for the years ended December 31, 2009, 2008 and 2007, 
respectively.

Balance, beginning of the year

Payments made

Warranties issued

Changes in estimate related to preexisting warranties

Balance, end of period

eARNiNgS peR SHARe 

2009

2008

2007

(in thousands)

$ 

  6,589

$ 

6,308

$ 

  5,572

    (4,211)

     4,822

            -

    (3,608)

     3,889

  (3,321)

  3,757

            -

                300

$ 

  7,200

$ 

  6,589

$ 

  6,308

Basic net income per share is calculated by dividing net income by the weighted average number of shares of common stock outstanding during the 
period. Diluted net income per share assumes the conversion of all potentially dilutive securities and is calculated by dividing net income by the 
sum of the weighted average number of shares of common stock outstanding plus all potentially dilutive securities. Dilutive common shares consist 
primarily of stock options and restricted stock awards.

The following table sets forth the computation of basic and diluted earnings per share:

yeARS eNded,
2008

  2009
(in thousands except share and per share data)

2007*

Numerator:

Net income 

Denominator:
Denominator for basic earnings per share –

Weighted average shares
Effect of dilutive stock options
Denominator for diluted earnings per share –

Weighted average shares

Earnings per share

Basic

Diluted

$ 

27,721 

$ 

28,589 

$ 

23,156  

17,186,930

17,560,295

18,628,029

122,038

294,568

299,015

17,308,968

17,854,863

18,927,044

$ 

$ 

1.61

1.60

$ 

$ 

1.63

1.60

$ 

$ 

1.24

1.22

Anti-dilutive shares

Weighted average exercise price

226,950

308,250

282,100

$ 

15.64

$ 

16.63

$ 

17.81

* Reflects three-for-two stock split effective August 21, 2007.

35

36

2009 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1. BuSiNeSS, SuMMARy OF SigNiFiCANt ACCOuNtiNg pOLiCieS ANd OtHeR 
FiNANCiAL dAtA (CONtiNued)

1. BuSiNeSS, SuMMARy OF SigNiFiCANt ACCOuNtiNg pOLiCieS ANd OtHeR 
FiNANCiAL dAtA (CONtiNued)

AdVeRtiSiNg

FAiR VALue MeASuReMeNtS

ANNuAl RepORT

Advertising costs are expensed as incurred. Advertising expense was approximately $761,000, $635,000 and $784,000 for the years ended December 
31, 2009, 2008 and 2007, respectively.

ReSeARCH ANd deVeLOpMeNt

Research and development costs are expensed as incurred. Research and development expense was $3.1 million, $2.6 million and $2.5 million for 
the years ended December 31, 2009, 2008 and 2007, respectively.

SHippiNg ANd HANdLiNg

We incur shipping and handling costs in the distribution of products sold that are recorded in cost of sales. Shipping charges that are billed to the 
customer are recorded in revenues.

pROFit SHARiNg BONuS pLAN

We  maintain  a  discretionary  profit  sharing  bonus  plan  under  which  10%  of  pre-tax  profit  at  each  subsidiary  is  paid  to  eligible  employees  on 
a quarterly basis in order to reward employee productivity. Eligible  employees  are regular full-time employees who are actively employed and 
working on the first day of the calendar quarter and remain continuously, actively employed and working on the last day of the quarter and who 
work at least 80% of the quarter. Profit sharing expense was $4.8 million, $5.1 million and $4.2 million for the years ended December 31, 2009, 2008 
and 2007, respectively. 

deFiNed CONtRiButiON pLAN - 401(k) 

We sponsor a defined contribution benefit plan (“the Plan”). Eligible employees may make contributions in accordance with the Plan and IRS 
guidelines. In addition, effective May 30, 2005, the Plan was amended to provide for automatic enrollment and provided for an automatic increase 
to the deferral percentage at January 1st of each year and each year thereafter, unless the employee elects to decline the automatic increase and 
enrollment. Beginning with pay periods after May 30, 2005, the one year enrollment waiting period was waived. Administrative expenses we paid 
for the plan were approximately $81,000, $93,000 and $98,000 for the years ended 2009, 2008 and 2007, respectively.

After January 1, 2007, our matching increased to 50% of the employee’s salary deferral up to the first 9% of compensation. From January 1, 2006 to 
December 31, 2006, we matched 50% of the employee’s salary deferral up to the first 7% of compensation. We contribute in the form of cash and 
direct the investment to shares of AAON stock. Employees are 100% vested in salary deferral contributions and vest 20% per year at the end of 
years two through six of employment in employer matching contributions. We made matching contributions of $1.2 million, $1.4 million and $1.3 
million in 2009, 2008 and 2007, respectively.

We  follow  the  provisions  of  FASC  Topic  820,  Fair  Value  Measurements  and  Disclosures  related  to  financial  assets  and  liabilities  that  are  being 
measured  and  reported  on  a  fair  value  basis.  Fair  value  is  the  price  that  would  be  received  to  sell  an  asset  or  paid  to  transfer  a  liability  in  an 
orderly transaction between market participants in the principal market at the measurement date (exit price). We are required to classify fair value 
measurements in one of the following categories: 

Level 1 inputs which are defined as quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the 
ability to access at the measurement date.

Level 2 inputs which are defined as inputs other than quoted prices included within Level 1 that are observable for the assets or liabilities, either 
directly or indirectly.

Level 3 inputs are defined as unobservable inputs for the assets or liabilities.

Financial assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurement. Our assessment of 
the significance of a particular input to the fair value measurement requires judgment, and may affect the valuation of the fair value of assets and 
liabilities and their placement within the fair value hierarchy levels.

deRiVAtiVe FAiR VALue MeASuReMeNtS

Our derivative assets consist of a forward purchase contract that is measured at fair value using the quoted prices in the COMEX commodity 
markets which is the lowest level of input significant to measurement. The fair value and carrying amount of our derivative assets at December 31, 
2009 is $2.2 million. The measurement is based on pricing for instruments similar but not identical to the contract we will settle. These prices are 
based upon regularly traded commodities on COMEX. Therefore we consider the market for our commodity futures contract to be active, yet the 
fair values are estimates and are not necessarily indicative of the amounts for which we could settle such instruments currently. 

We record changes in the derivative’s fair value currently in earnings based on mark-to-market accounting. At December 31, 2009, we recorded 
a $2.2 million ($1.4 million after tax) adjustment to cost of sales from the unrealized gain on derivative assets at fair value in the Consolidated 
Statements of Income. 

The following table presents the fair value of our assets and liabilities measured at fair value on a recurring basis as of December 31, 2009 in the 
Consolidated Balance Sheets: 

QuOted pRiCeS iN ACtiVe 
MARketS FOR ideNtiCAL 
ASSetS  
LeVeL 1

SigNiFiCANt 
OtHeR 
OBSeRVABLe 
iNputS
LeVeL 2

(in  thousands)

SigNiFiCANt 
uNOBSeRVABLe 
iNputS
LeVeL 3

tOtAL

Assets

Derivative Assests

$        -

$   2,200

$       -

$  2,200

37

38

20091. BuSiNeSS, SuMMARy OF SigNiFiCANt ACCOuNtiNg pOLiCieS ANd OtHeR 
FiNANCiAL dAtA (CONtiNued)

SuBSeQueNt eVeNtS

We have determined that no subsequent events which require recognition or disclosure in our Consolidated Financial Statements exist.

New ACCOuNtiNg pRONOuNCeMeNtS

In  March  2008,  the  FASB  issued  FASC  Topic  815,  Derivatives  and  Hedging,  formerly  SFAS  No.  161,  (“FASC  815”),  which  requires  enhanced 
disclosures about (i) how and why an entity uses derivative instruments, (ii) how derivative instruments and related hedged items are accounted for 
under prior guidance and (iii) how derivative instruments and related hedged items affect an entity’s financial position, financial performance and 
cash flows.  FASC 815 is effective for financial statements issued for fiscal years and interim periods beginning after November 15, 2008.  Adoption 
of FASC 815 did not have a material impact on our Consolidated Financial Statements.

In June 2009, the FASB issued Accounting Standards Update (“ASU”) 2009-01, Topic 105 - Generally Accepted Accounting Principles (“GAAP”) 
(“ASU 2009-01”), which superseded all accounting standards in U.S. GAAP, aside from those issued by the SEC. The codification does not change 
or alter existing GAAP. ASU 2009-01 is effective for reporting periods ending after September 15, 2009. We adopted ASU 2009-01 for reporting in 
the third quarter of 2009. Adoption of ASU 2009-01 did not have a material impact on our Consolidated Financial Statements. 

In August 2009, the FASB issued ASU 2009-05, Fair Value Measurement and Disclosures: Measuring Liabilities at Fair Value (“ASU 2009-05”), which 
provides clarification on measuring liabilities at fair value when a quoted price in an active market is not available. ASU 2009-05 is effective for 
the first reporting period beginning after issuance. We adopted ASU 2009-05 in the fourth quarter 2009. Adoption of ASU 2009-05 did not have a 
material impact on our Consolidated Financial Statements.

In February 2010, the FASB issued ASU 2010-09, Subsequent Events (“ASU 2010-09”), which discontinues the requirement that entities disclose the 
date through which they have evaluated subsequent events. ASU 2010-09 is effective upon issuance. We adopted ASU 2010-09 for reporting in the 
fourth quarter of 2009. Adoption of ASU 2010-09 did not have a material impact on our Consolidated Financial Statements.

SegMeNtS

We have reviewed our business operations and determined that we have two operating segments as defined in FASC Topic 280, Segment Reporting. 
We have a domestic and foreign operating segment. The domestic operating segment includes the operations of AAON, Inc. and AAON Coil 
Products, Inc. The foreign operating segment includes the operations of AAON Canada through September 2009 at which time manufacturing 
operations  closed  and  AAON  Properties  (“Canadian  facility”).  We  have  determined  that  the  foreign  operating  segment  does  not  constitute  a 
separate reporting segment based on quantitative threshold tests. We sell similar products with similar economic characteristics to similar classes 
of customers. The technologies and operations are highly integrated. Revenues and costs are reviewed monthly by management on a product line 
basis as a single business segment. 

2. SuppLeMeNtAL CASH FLOw iNFORMAtiON

Interest payments of approximately $9,000, $71,000 and $10,000 were made during the years ended December 31, 2009, 2008 and 2007, respectively. 
Payments for income taxes of $10.0 million, $12.7 million and $10.2 million were made during the years ended December 31, 2009, 2008 and 2007, 
respectively. Dividends payable of $3.1 million and $2.8 million were accrued as of December 31, 2009 and 2008 and were paid on January 4, 2010 
and January 2, 2009, respectively.

ANNuAl RepORT

3. ReVOLViNg CRedit FACiLity

Our revolving credit facility provides for maximum borrowings of $15.2 million which is provided by the Bank of Oklahoma, National Association. 
Under  the  line  of  credit,  there  is  one  standby  letter  of  credit  totaling  $0.9  million.  Borrowings  available  under  the  revolving  credit  facility  at 
December 31, 2009, were $14.3 million. The letter of credit was a requirement of our workers compensation insurance and was extended in 2009 
and will expire December 31, 2010. Interest on borrowings is payable monthly at the greater of 4.0% or LIBOR plus 2.5% (4.0% at December 31, 
2009). No fees are associated with the unused portion of the committed amount. We had no borrowings outstanding under the revolving credit 
facility at December 31, 2009. We had $2.9 million outstanding under the revolving credit facility at December 31, 2008. We had no borrowings 
outstanding under the revolving credit facility at December 31, 2007. 

At December 31, 2009, 2008 and 2007, we were in compliance with our financial ratio covenants. The covenants are related to our tangible net 
worth, total liabilities to tangible net worth ratio and working capital. At December 31, 2009 our tangible net worth was $118.0 million which meets 
the requirement of being at or above $75.0 million. Our total liabilities to tangible net worth ratio was 1 to 3 which meets the requirement of not 
being above 2 to 1. Our working capital was $65.4 million which meets the requirement of being at or above $30.0 million. On July 30, 2009, we 
renewed the line of credit with a maturity date of July 30, 2010 with terms substantially the same as the previous agreement. We expect to renew our 
revolving credit agreement in July 2010. We do not anticipate that the current situation in the credit market will impact our renewal.

4. deBt

Short-term debt at December 31, 2009 and 2008 consisted of notes payable totaling approximately $76,000 and $91,000 due in 2010 and 2009, 
respectively. In 2009 and 2008, respectively, the notes payable are due in monthly installments of $7,588, with an interest rate of 4.148%, related to 
a computer capital lease.

5. iNCOMe tAxeS

We follow the provisions of FASC Topic 740, Income Taxes, including the liability method of accounting for income taxes, which provides that 
deferred tax liabilities and assets are based on the difference between the financial statement and income tax bases of assets and liabilities using 
currently enacted tax rates.

The income tax provision consists of the following:

Current

Deferred

yeARS eNdiNg deCeMBeR 31,

2009

2008

2007

(in thousands)

$  19,529  

(3,358)

$ 

16,171  

$ 

$ 

16,163  

(684)

15,479  

$ 

$ 

12,631

(444)

12,187

The reconciliation of the federal statutory income tax rate to the effective income tax rate is as follows: 

Federal statutory rate

State income taxes, net of federal benefit

Other

The “Other” tax rate primarily relates to certain domestic credits.

yeARS eNdiNg deCeMBeR 31,

2009

2008

2007

(in thousands)

35%

4%

(2%)

37%

35%

3%

(3%)

35%

35%

3%

(3%)

35%

39

40

2009 
 
The tax effect of temporary differences giving rise to our deferred income taxes at December 31 is as follows:

Net current deferred assets and (liabilities) relating to:

Valuation reserves

Warranty accrual

Other accruals

Other, net

Net long-term deferred (assets) and liabilities relating to:

Depreciation and amortization

NOL

Share-based compensation

2009

2008

2007

(in thousands)

$ 

572  

$ 

446  

$ 

2,544

1,297  

(790)

3,623  

7,820  

-

(494)

2,567

1,262  

(40)

4,235  

7,247  

(2,265)

(400)

$ 

$ 

$ 

$ 

$ 

$ 

$ 

7,326  

$ 

4,582  

$ 

295

2,456

1,430

131

4,312

6,376

(2,019)

(383)

3,974

The total net operating loss (“NOL”) deferred tax asset related to AAON Canada was utilized in 2009. We file income tax returns in the U.S. federal 
jurisdiction and various state and foreign jurisdictions.

The total amount of unrecognized tax benefits is as follows:

Balance at January 1, 2009

Change as a result of tax positions taken during an earlier period

Change as a result of tax positions taken during the current period

Change as a result of settlements with tax authorities

Change as a result of a lapse of the applicable statute of limitations

Balance at December 31, 2009

tAx BeNeFit

(in thousands)

$ 

50 

-

-

-

(50)

0

$ 

There are no unrecognized tax benefits that if recognized would impact the effective tax rate at December 31, 2009.

We recognize accrued interest and penalties related to unrecognized tax benefits in income tax expense. At December 31, 2009 and 2008, we had 
accrued approximately $0 and $6,000 for the potential payment of interest and penalties, respectively.

As of December 31, 2009, we are subject to U.S. Federal income tax examinations for the tax years 2006 through 2009, and to non-U.S. income tax 
examinations for the tax years of 2006 through 2009. In addition, we are subject to state and local income tax examinations for the tax years 2005 
through 2009. 

6. SHARe-BASed COMpeNSAtiON

We have historically maintained a stock option plan for key employees, directors and consultants (“the 1992 Plan”). The 1992 Plan provided for 4.4 
million shares of common stock to be issued under the plan. Under the terms of the plan, the exercise price of shares granted may not be less than 
85% of the fair market value at the date of the grant. Options granted to directors prior to May 25, 2004, vest one year from the date of grant and are 
exercisable for nine years thereafter. Options granted to directors on or after May 25, 2004, vest one-third each year, commencing one year after the 
date of grant. All other options granted vest at a rate of 20% per year, commencing one year after date of grant, and are exercisable during years 2-10. 

On May 22, 2007, our stockholders adopted a Long-Term Incentive Plan (“LTIP”) which provides an additional 750,000 shares that can be granted 
in the form of stock options, stock appreciation rights, restricted stock awards, performance units and performance awards. Since inception of the 
Plan, non-qualified stock options and restricted stock awards have been granted with the same vesting schedule as the previous plan. Under the 
LTIP, the exercise price of shares granted may not be less than 100% of the fair market value at the date of the grant.

ANNuAl RepORT

We apply the provisions of FASC Topic 718, Compensation – Stock Compensation. The compensation cost is based on the grant date fair value of 
stock options issued calculated using a Black-Scholes-Merton Option Pricing Model, or the grant date fair value of a restricted share less the present 
value of dividends.

We  recognized  approximately  $484,000,  $400,000  and  $526,000  at  December  31,  2009,  2008  and  2007,  respectively,  in  pre-tax  compensation 
expense related to stock options in the Consolidated Statements of Income. The total pre-tax compensation cost related to unvested stock options 
not yet recognized as of December 31, 2009 is $0.9 million and is expected to be recognized over a weighted-average period of 2.1 years. 

The following weighted average assumptions were used to determine the fair value of the stock options granted on the original grant date for 
expense recognition purposes for options granted during December 31, 2009, 2008 and 2007:

Directors and Officers:

Expected dividend yield

Expected volatility

Risk-free interest rate

Expected life

Forfeiture rate

employees:

Expected dividend yield

Expected volatility

Risk-free interest rate

Expected life

Forfeiture rate

 2009

2008

2007

1.87% 

47.47% 

2.53%

7.0 yrs

0%

1.87%

46.94%

2.62%

8.0 yrs

31%

1.72% 

45.16% 

3.08%

7.0 yrs

0%

1.72%

44.47%

3.05%

8.0 yrs

31%

N/A

N/A

N/A

N/A

N/A

1.67%

41.92%

4.61%

6.3 yrs

28%

The expected term of the options is based on evaluations of historical and expected future employee exercise behavior. The risk-free interest rate is 
based on the U.S. Treasury rates at the date of grant with maturity dates approximately equal to the expected life at the grant date. Volatility is based 
on historical volatility of our stock over time periods equal to the expected life at the grant date. 

The following is a summary of stock options outstanding as of December 31, 2009:

OptiONS OutStANdiNg

OptiONS exeRCiSABLe

NuMBeR
OutStANdiNg 
At
deCeMBeR 31, 
2009

weigHted 
AVeRAge
ReMAiNiNg 
CONtRACtuAL 
LiFe

weigHted 
AVeRAge 
exeRCiSe 
pRiCe

AggRegAte 
iNtRiNSiC 
VALue

NuMBeR
exeRCiSABLe 
At
deCeMBeR 31, 
2009

weigHted 
AVeRAge 
exeRCiSe 
pRiCe

120,613

33,900

131,500

174,500

460,513

3.41

5.71

8.22

7.18

6.38

$   9.12

11.60

15.13

17.58

$ 14.22

$ 10.37

7.89

4.36

1.91

$  6.75

104,113

28,200

33,900

78,100

244,313

$  8.84

11.62

14.72

17.48

$ 12.74

RANge OF
exeRCiSe 
pRiCeS

5.73 – 11.29

  11.40 – 12.00

 13.60 – 15.55

15.99 – 21.42

Total

41

42

2009 
 
 
 
 
 
 
 
A summary of option activity under the plan as is as follows:

OptiONS

SHAReS

Outstanding at December 31, 2006

Granted

Exercised

Forfeited or Expired

Outstanding at December 31, 2007

Granted

Exercised

Forfeited or Expired

Outstanding at December 31, 2008

Granted

Exercised

Forfeited or Expired

Outstanding at December 31, 2009

Exercisable at December 31, 2009

1,461,496

139,188

(573,374)

(98,377)

928,933

50,000

(348,075)

(51,282)

579,576

93,000

(164,013)

(48,050)

460,513

244,313

weigHted 
AVeRAge 
ReMAiNiNg 
CONtRACtuAL 
teRM

AggRegAte 
iNtRiNSiC 
VALue ($000)

weigHted 
AVeRAge 
exeRCiSe pRiCe

$   7.33

15.98

4.24

14.80

9.47

16.64

4.87

15.76

12.29

15.92

7.53

17.00

14.22

12.74

$ 

6.38

5.04

$ 

$ 

2,426

1,649

The weighted average grant date fair value of options granted during 2009 and 2008 was $6.87 and $6.95, respectively. The total intrinsic value of 
options exercised during December 31, 2009, 2008 and 2007 was $3.3 million, $6.4 million and $8.7 million, respectively. The cash received from 
options exercised during December 31, 2009, 2008 and 2007 was $1.2 million, $1.7 million and $2.4 million, respectively. The impact of these cash 
receipts is included in financing activities in the accompany Consolidated Statements of Cash Flows. 

A summary of the status of the unvested stock options is as follows:

Unvested at January 1, 2009

Granted

Vested

Forfeited

Unvested at December 31, 2009

SHAReS

242,600

93,000

(80,850)

(38,550)

216,200

weigHted AVeRAge 
gRANt dAte FAiR VALue

                $                          6.68

             6.87

             6.53                 

            6.97

                $                          6.77

The total grant date fair value of options vested during December 31, 2009 and 2008 was $0.5 million and $0.6 million, respectively. 

During 2007, the Compensation Committee of the Board of Directors authorized and issued restricted stock awards to directors and key employees. 
The restricted stock award program offers the opportunity to earn shares of AAON Common Stock over time, rather than options that give the 
right to purchase stock at a set price. Restricted stock awards granted to directors vest one-third each year. All other restricted stock awards vest at 
a rate of 20% per year. Restricted stock awards are grants that entitle the holder to shares of common stock subject to certain terms. The fair value 
of restricted stock awards is based on the fair market value of AAON common stock on the respective grant dates, reduced for the present value of 
dividends.

These awards are recorded at their fair value on the date of grant and compensation cost is recorded using straight-line vesting over the service period. 
The weighted average grant date fair value of restricted stock awards granted during 2009 and 2008 was $19.72 and $19.34 per share, respectively. 
We recognized approximately $364,000, $350,000 and $56,000 at December 31, 2009, 2008 and 2007, respectively in pre-tax compensation expense 
related to restricted stock awards in the Consolidated Statements of Income. In addition, as of December 31, 2009, unrecognized compensation 
cost related to unvested restricted stock awards was approximately $466,000 which is expected to be recognized over a weighted average period of 
1.5 years.

ANNuAl RepORT

A summary of the unvested restricted stock awards is as follows:

Unvested at January 1, 2009

Granted

Vested

Forfeited 

Unvested at December 31, 2009

SHAReS

42,450

7,350

(16,550)

    -

33,250

FASC Topic 718, Compensation – Stock Compensation requires that cash flows from the exercise of stock options resulting from tax benefits in 
excess of recognized cumulative compensation costs be classified as financing cash flows. During December 31, 2009, 2008 and 2007, the excess tax 
benefits of stock options exercised and restricted stock awards vested was $0.7 million, $1.6 million and $3.0 million respectively. 

7. StOCkHOLdeR RigHtS pLAN

During 1999, the Board of Directors adopted a Stockholder Rights Plan (the “Plan”), which was amended in 2002. Under the Plan, stockholders of 
record on March 1, 1999, received a dividend of one right per share of our Common Stock. Stock issued after March 1, 1999, contains a notation 
incorporating  the  rights.  Each  right  entitles  the  holder  to  purchase  one  one-thousandth  (1/1,000)  of  a  share  of  Series  A  Preferred  Stock  at  an 
exercise price of $90. The rights are traded with our Common Stock. The rights become exercisable after a person has acquired, or a tender offer 
is made for, 15% or more of our Common Stock. If either of these events occurs, upon exercise the holder (other than a holder owning more than 
15% of the outstanding stock) will receive the number of shares of our Common Stock having a market value equal to two times the exercise price.

The rights may be redeemed by us for $0.001 per right until a person or group has acquired 15% of our Common Stock. The rights expire on August 
20, 2012.

8. StOCk RepuRCHASe

Following repurchases of approximately 12% of our outstanding common stock between September 1999 and September 2001, we announced 
and began another stock repurchase program on October 17, 2002, targeting repurchases of up to an additional 2.0 million shares of our 
outstanding stock. On February 14, 2006, the Board of Directors approved the suspension of our repurchase program. Through February 14, 
2006, we had repurchased a total of 1,886,796 shares under this program for an aggregate price of $22,034,568, or an average of $11.68 per share. 
We purchased the shares at current market prices.

On November 6, 2007, we began a new stock buyback program, targeting repurchases of up to approximately 10% (1.8 million shares) of our 
outstanding stock from time to time in open market transactions. Through December 31, 2009, we had repurchased a total of 1,717,804 shares 
under this program for an aggregate price of $34,192,008, or an average price of $19.90 per share. We purchased the shares at current market prices. 

On July 1, 2005, we entered into a stock repurchase arrangement by which employee participants in our 401(k) savings and investment plan are 
entitled to have shares of AAON stock in their accounts sold to us to provide diversification of their investments. The maximum number of shares 
to be repurchased is unknown under the program as the amount is contingent on the number of shares sold by employees. Through December 
31, 2009, we repurchased 760,477 shares for an aggregate price of $12,589,311, or an average price of $16.55 per share. We purchased the shares at 
current market prices.

On November 7, 2006, the Board of Directors authorized us to repurchase shares from certain directors and officers following their exercise of stock 
options. The maximum number of shares to be repurchased under the program is unknown as the amount is contingent on the number of shares 
sold. Through December 31, 2009, we repurchased 350,375 shares for an aggregate price of $7,167,623, or an average price of $20.46 per share. We 
purchased the shares at current market prices.

9. diVideNdS

On February 14, 2006, the Board of Directors voted to initiate a semi-annual cash dividend. We initially paid semi-annual dividends of $0.20 per 
share. The Board of Directors approved dividend payments of $0.16 per share related to the stock split effective August 21, 2007. The Board of 
Directors approved future dividend payments of $0.18 per share on May 19, 2009. Board approval is required to determine the date of declaration 
and amount for each semi-annual dividend payment. 

43

44

2009 
 
 
 
Cash dividend payments of $5.9 million were made in 2009, and we accrued a liability for payment of $3.1 million of dividends in January 2010. 
Cash dividend payments of $5.8 million were made in 2008, and $2.8 million in dividends were declared and accrued as a liability in December 
2008 for payment in January 2009. Cash dividend payments of $5.0 million were made in 2007, and $2.9 million in dividends were declared and 
accrued as a liability in December 2007 for payment in January 2008. 

10. COMMitMeNtS ANd CONtiNgeNCieS

We are subject to claims and legal actions that arise in the ordinary course of business. Management believes that the ultimate liability from these 
claims and actions, if any, will not have a material effect on our results of operations or financial position.

11. CANAdiAN FACiLity

On May 18, 2009 we announced the closure of our Canadian facility and filed an 8-K to that effect. At the same time, we notified the 47 Canadian 
employees of the expected closure date. The actual closure date was at the end of September 2009. We accrued and charged to expense $0.3 million 
through December 31, 2009, in closure costs related to employee termination benefits in accordance with Canadian labor laws and regulations. We 
incurred employee termination costs as well as costs to dispose of inventory. We accrued and charged to expense $0.4 million as an adjustment to 
our inventory reserve in second quarter 2009 to account for inventory items we did not transfer to our other locations. The following closure costs 
were included in income from continuing operations in the income statement and paid as of December 31, 2009:

Employee termination benefits

Inventory reserve adjustments
Total

12. QuARteRLy ReSuLtS (uNAudited)

BALANCe
At 6/30/09

$     280

       389
$     669

AdditiONAL 
ACCRuAL

(in thousands)

CHARged tO 
expeNSe

$      26

           -
$      26

$     306

       389
$     695

The following is a summary of the quarterly results of operations for the years ending December 31, 2009 and 2008: 

2009
Net sales

Gross profit

Net income
Earnings per share:

Basic
Diluted

2008

Net sales

Gross profit

Net income
Earnings per share:

Basic
Diluted

QuARteR eNded

MARCH 31

juNe 30

SepteMBeR 30

deCeMBeR 31

(in thousands, except per share data)

$ 63,965

    16,934

      6,728

        0.39
        0.39

$  68,597

    18,104

      7,097

        0.41
        0.41

     $ 58,492

        17,728*

          7,741*

           0.45*
           0.45*

     $ 54,228

        14,779*

          6,155*

           0.36*
           0.36*

QuARteR eNded

MARCH 31

juNe 30

SepteMBeR 30

deCeMBeR 31

(in thousands, except per share data)

$ 65,456

    15,652

      6,434

        0.36
        0.35

$  74,781

    17,990

      7,760

        0.43
        0.43

     $ 79,279

        20,018

          8,355

           0.49
           0.47

     $ 60,209

        13,516

          6,040

           0.35
           0.35

*Includes the impact of the unrealized gain from the derivative.

45

ANNuAl RepORT

Exhibit 23.1

CONSeNt OF iNdepeNdeNt RegiSteRed puBLiC ACCOuNtiNg FiRM 

We have issued our reports dated March 10, 2009, with respect to the consolidated financial statements and internal control over 
financial reporting included in the Annual Report of AAON, Inc. on Form 10-K for the year ended December 31, 2009.  We hereby 
consent to the incorporation by reference of said reports in the Registration Statements of AAON, Inc. on Forms S-8 (File No. 333-
52824, effective December 28, 2000 and File No. 333-151915, effective June 25, 2008).

/s/ GRANT THORNTON LLP
Tulsa, Oklahoma
March 15, 2010

46

2009CeRtiFiCAtiON

CeRtiFiCAtiON

Exhibit 31.1

ANNuAl RepORT

Exhibit 31.2

I, Norman H. Asbjornson, certify that:

I, Kathy I. Sheffield, certify that:

1. 

2. 

3. 

I have reviewed this Annual Report on Form 10-K of AAON, Inc.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material 
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not 
misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present 
in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the 
periods presented in this report;

1. 

2. 

3. 

I have reviewed this Annual Report on Form 10-K of AAON, Inc.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material 
fact necessary to make the statements made, in light of the circumstances under which such statements were made, not 
misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present 
in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the 
periods presented in this report;

4.  The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and 
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e) and internal control over financial reporting (as 
defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

4.  The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and 
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e) and internal control over financial reporting (as 
defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) 

b) 

c) 

d) 

designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed 
under our supervision, to ensure that material information relating to the registrant, including our consolidated 
subsidiaries, is made known to us by others within those entities, particularly during the period in which this 
report is being prepared;

designed such internal control over financial reporting, or caused such internal control over financial reporting to 
be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting 
and the preparation of financial statements for external purposes in accordance with generally accepted accounting 
principles;

evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our 
conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered 
by this report based on such evaluation; and

disclosed  in  this  report  any  change  in  the  registrant’s  internal  controls  over  financial  reporting  that  occurred 
during  the  registrant’s  most  recent  fiscal  quarter  (the  registrant’s  fourth  fiscal  quarter  in  the  case  of  an  annual 
report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over 
financial reporting; and

a) 

b) 

c) 

d) 

designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed 
under our supervision, to ensure that material information relating to the registrant, including our consolidated 
subsidiaries, is made known to us by others within those entities, particularly during the period in which this 
report is being prepared;

designed such internal control over financial reporting, or caused such internal control over financial reporting to 
be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting 
and the preparation of financial statements for external purposes in accordance with generally accepted accounting 
principles;

evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our 
conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered 
by this report based on such evaluation; and

disclosed  in  this  report  any  change  in  the  registrant’s  internal  controls  over  financial  reporting  that  occurred 
during  the  registrant’s  most  recent  fiscal  quarter  (the  registrant’s  fourth  fiscal  quarter  in  the  case  of  an  annual 
report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over 
financial reporting; and

5.  The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control 
over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons 
performing the equivalent functions):

5.  The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control 
over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons 
performing the equivalent functions):

a) 

b) 

all significant deficiencies and material weaknesses in the design or operation of internal control over financial 
reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and 
report financial information; and

any fraud, whether or not material, that involves management or other employees who have a significant role in 
the registrant’s internal control over financial reporting.

a) 

b) 

all significant deficiencies and material weaknesses in the design or operation of internal control over financial 
reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and 
report financial information; and

any fraud, whether or not material, that involves management or other employees who have a significant role in 
the registrant’s internal control over financial reporting.

Date: March 15, 2010 

47

/s/ Norman H. Asbjornson

Norman H. Asbjornson
Chief Executive Officer

Date: March 15, 2010 

/s/ Kathy I. Sheffield

Kathy I. Sheffield
Chief Financial Officer

48

2009 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CeRtiFiCAtiON puRSuANt tO
18 u.S.C. SeCtiON 1350,
AS AdOpted puRSuANt tO
SeCtiON 906 OF tHe SARBANeS–OxLey ACt OF 2002

Exhibit 32.1

CeRtiFiCAtiON puRSuANt tO
18 u.S.C. SeCtiON 1350,
AS AdOpted puRSuANt tO
SeCtiON 906 OF tHe SARBANeS–OxLey ACt OF 2002

ANNuAl RepORT

Exhibit 32.2

In connection with the Annual Report of AAON, Inc. (the “Company”), on Form 10-K for the year ended December 31, 
2009, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Norman H. Asbjornson, Chief 
Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 
2002, that:

In connection with the Annual Report of AAON, Inc. (the “Company”), on Form 10-K for the year ended December 31, 
2009, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Norman H. Asbjornson, Chief 
Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 
2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and our results of 

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and our results of 

operations.

March 15, 2010 

/s/ Norman H. Asbjornson

Norman H. Asbjornson
Chief Executive Officer

operations.

March 15, 2010 

/s/ Kathy I. Sheffield

Kathy I. Sheffield
Chief Financial Officer

49

50

2009 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
OFFiCeRS

BOARd OF  
diReCtORS

Front row, left to right: John B. Johnson, Jr., Norman H. Asbjornson 
& Charles C. Stephenson, Jr.  Back row, left to right: Paul K. Lackey, Jr., A.H. McElroy, II,
Jack E. Short & Jerry R. Levine

NORMAN H. ASBjORNSON 
President/CEO

jOHN B. jOHNSON, jR. Secretary

CHARLeS C. StepHeNSON, jR. has 
served as a director of the Company since 
1996. From 1987 to January 2006, Mr. 
Stephenson served as Chairman of the Board 
of Vintage Petroleum, Inc., based in Tulsa, 
Oklahoma.

jACk e. SHORt was elected to the Board 
in July 2004 and is the Chairman of the 
Audit Committee. Mr. Short  was 
employed by PriceWaterhouseCoopers for 
29 years and retired as the managing partner 
of the Oklahoma practice in 2001.

A.H. MCeLROy, ii was elected as a director 
of the Company in 2007. From 1997 to 
present, Mr. McElroy has served as President 
and CEO of McElroy Manufacturing, Inc., 
a manufacturer of fusion equipment and 
fintube machines.

pAuL k. LACkey, jR. was elected as a 
director of the Company in 2007. From 2001 
to present, Mr. Lackey has served as CEO 
and president of NORDAM, a privately held 
aerospace company.

jeRRy R. LeViNe has served as a director 
of the Company since 2008. Since 1999 Mr. 
Levine has provided investor and shareholder 
relations services and advice to the Company.

CORpORAte 
dAtA

transfer Agent and 
Registrar–
Progressive Transfer 
Company,

1981 East Murray-Holladay 
Road, Suite 200,
Salt Lake City, Utah 84117

Auditors–
Grant Thornton LLP,

2431 East 61st Street, Suite 
500, Tulsa, Oklahoma 74136

general Counsel–
Johnson & Jones, 
2200 Bank of America

Center, 15 West Sixth Street, 
Tulsa, Oklahoma 74119

investor Relations–
Jerry Levine,

105 Creek Side Road, 
Mt. Kisco, New York 10549, 
Ph: 914-244-0292, 
Fax: 914-244-0295, 
Jerry.levine@worldnet.att.net

executive Offices–

2425 South Yukon Avenue, 
Tulsa, Oklahoma 74107

Common Stock–
NASDAQ-AAON

51

52

NormaN H. asbjorNsoN has served as President and a director of the Company since 1988. Mr. Asbjornson has been in senior management positions in the heating and air conditioning industry for over 40 years.RobeRt G. FeRGus has served as Vice President of the Company since 1988. Mr. Fergus has been in senior management positions in the heating and air conditioning industry for over 40 years. Kathy I. SheffIeld became treasurer of the Company in 1999 and Vice President in June of 2002. Ms. Sheffield previously served as Accounting Manager of the Company from 1988 to 1999. John B.  Johnson, Jr. has served as Secretary and a director of the Company since 1988. Mr. Johnson is a member of the firm of Johnson & Jones which serves as General Counsel of the Company. DaviD E. KnEbEl has served as Vice President of Sales for the Company since 2005. Mr. Knebel has been in the heating and air conditioning industry for over 40 years, holding positions in design, research, software development, engineering, teaching, sales and senior management.tHANkS tO OuR eMpLOyeeS

William Abbott
Luis Acosta
Maria D. Acosta
Maria L. Acosta
Martha Acosta
Rogelio Acosta 

Guerrero

Andres Acosta-Lujan
Enriqueta Adame
Derrick Adams
Gary Adams
Larry Adams
Rodney Adams
Ryan Adams
Brian Adkins
Maria Aguayo
Arturo Aguilar
Miguel Aguilera
Daniel Alagdon
Imelda Alba
Socorro Alba
Julio Albino
James Alexander
Shannon Alford
Brendan Allen
Donald Allen
Kevin Allen
Felipe Alvarado
Edin Alvarado Reyes
Michael Amburgey
Anthony  Anderson
Jose Andrada
Margarito Angeles
Wesley Anselme
Alfredo Antonio
Lorenzo Aragon
Clyde Archer
Uriel Arellano 
   Guerra
Maria Arredondo
Gerardo Arroyo
Eleazar Arroyo    
   Alvarez
Norman Asbjornson
Scott Asbjornson
Gary Ashmore
Dwight Austin
Jesus Avelar Saldivar
Joseph Avila
Orlando Ayala
Nora Backus
Richard Backus
Dwight Baker
Eric Baker
John Baldwin
Luis Banuelos
Carolyn Barber
Candy Barbosa
Gregory Barker, Jr.
Daniel  Barnard
David Barnett

Ana Barragan De  
   Alteneh
Cesar Barraza
Nereyda Barrios  
   De Perez
Benigno Barrios  
   Orozco
Rosa Barro
Maria  Barron
Michael Bass
Boyd Battles
Stuart Baugh
Jason Bazan
Kevin Begley
Guzman Benitez
Ofelia Benitez
Bonnie Benson
James Berden
Ida Bermudez
Sergio Beserra
Cheryl Birmingham
Marcus Black
Seth Black
Vickie Black
Brian Blackmon
Debbie Blackmon
Matthew Blakley
Maria Blanco
David Blevins
Justin Blevins
Aaron Bodovsky
Gene Boese
James Bond
Debra Booher
Ronnie Booth
Anthony Botello
Rosendo Botello
Rudolph  
   Bourgeois, Iii
Demetrius Boyd
John Boyd
Brian Bradford
Myoshia Bradley
Christopher Brantley
Raynor Brenton
Arlando Brewer
Terry Brewster
Shahani Britt
Arlunda Brooks
Bernardo Brooks
David Brown
Jermaine Brown
Johnny Brown, Jr.
Maceo Brumley
Christopher Bryant
William Bryant
Kelli Burkes
Billy Burns
Monica Burns
Thomas Burns,  Jr.
Shannon Burtch

Stephen Burton
Douglas Burtrum
Wayne Bush
Tina  Bush Jones
Rosa Butler
Jeremy Byram
Dora Cadena
Santiago Cadenas
Cleveland Cage, Jr.
Margarito Calderon
Danielle Calhoun
Jorge Calixto
Elizabeth Calvillo
Cesar Calzada
Lazaro Cama
Maria Camacho
Jose Camas-Padilla
Adrian Campbell
David Campbell
Arthur Candler
Yong Cantrell
Refugio Carachure
Jorge Carcamo
Justin Cardoza
Todd Carner
Vincent Carson
Larry Carter, Jr.
James Cason
Gary Cassiday
Warren Castleberry
Soledad Castro
Jose Castro M
Elvis Cerda
Justo Chagoya
Guadalupe  
   Chairez-Galan
Patrick Chapman
Sergio Charles
Clark Chase
Josh Chattillon
Adalberto Chavez
Gregory Chavez
Rita Chavez
Dale Cherry
Daniel Cherry
Scott Chestnut
Adan Chicas
William Christopher
Sian Cin
Nem Cing
George Clark
John Clark
Morris Clark
Richard Clark
Stephanie Cleveland
William Cleveland
Brenda Coats
Kenneth Cochran
Latoya Coleman
Ronald Collins
Dale Conkwright

Jude Connolly
Gerardo Contreras
Maria Cook
Mark Cook
Michael Coolidge
Scott Coon
Donna Coonfield
James Cooper
Lisa Cooper
Lorenza Cooper
Elaine Corkhill
Alberto Corona
Blanca Corona
Heron Corona
Roberto Corona
Rosa Cortez
Billy Cox
Jerry Cox
John Cox
Patrick Cox
Adrian Crabtree
Richard Craite
Steven Crase
Devin Creech
Juan Crespo-Maisonet
Mikel Crews
Darrell Crow
Drummond Crowe
Carolyn Crutchfield
Jose Cuadroz
Victory Cullom, Ii
Robert Cummings
Gene Curtis
Oliver Cyrus, Iii
Gwendolyn Daniels
John Daniels
William Daugherty
Jenifur Davidson
Byron Davis
Carolyn Davis
Cathy Davis
Darryl Davis
Jerry Davis
Marleitta Davis
Richard Davis
Samuel Davis
Tymesia Davis
Wilfredo De Jesus
Otilia De Jones
Matilde De La Torre
Alvaro De  
   Leon Mendoza
Freddie Deboe
Bobby Degraffenreid
Ismael Delapaz
Eva Delatorre
Lucero  
   Deleon Mendoza
Juana Delobo
Andres Delos Santos
Raquel Deluna

Robert Denby
Eufemio Depaz
Bruce Derr
Audencia Devilla
Roy Deville
Charles Deweese
Cheikh Diallo
Cin Ding
Homer Dodd
Rickey Dodson
Edreys Dominguez
Martin Dominguez
Pablo Dominguez
Thang Dop Mui
Jennifer Dossman
Jodi Doty
Harold Douglas
Michael Drew
Cathryn Dubbs
Carolyn Duesler
Linda Dunec
Cortney Dunn
Francisco  
   Duran Torres
Ralph Durbin
Yolanda Durham
Randy Dwiggins
Wendell Easiley
Stephen Edmonds
Earl Elliott
Harvey Ellis
Tinisha English
Eva Enriquez
Kevin Erickson
Blanca Escobar
Teresa Escobedo
Norberto  
   Esparza-Torres
Leonardo  
   Espinoza Flores
Jesus  
   Estrada-Gonzalez
Stephen Etter
Gilda Etumudor
Calvin Eubanks
Otis Evans
Reginald Everidge, Jr.
Shawn Fairley
Robert Fergus
Elizabeth Ferguson
Catalina Fernandez
Fabiola Fernandez
Samuel Fields
Jesse Figueroa
Sterlyn Finch
Jason Fisher
Anthony Fizer
Wayne Flaska
Tyronica Fletcher
Copotenia  
   Fletcher, Jr.
Carolina Flores
Efigenia Flores
Juana Flores
Laura Flores

Ruby Floyd
Vicky Floyd
Mark Fly
Kenneth Fontenot
Sharon Fontenot
Sheila Forrest
Christopher Foster
Frederick Foster
Loretta Fowlkes
Kenneth Foyil
Jason Franco
Phillip Frank
Damion Franklin
Warren Franklin
Revonda Franks
Gary Frederiksen, Jr.
Olga French
Angel Frias
Wade Fuller
Rony Gadiwalla
Ranulfo Galicia
Gregorio Galindo
Maria  Galindo
John Gall
Ma Galvan
Maria  Galvan
Angel Garcia
Maximo Garcia
Nicklaus Garcia
Roberto Garcia
Maria Garcia Garcia
Norma Garibay
Patrick Garrett, Sr.
Carlos Garza
Pedro  Garza
Ralph Gasaway
Steve Geary
James George
Wilbert Gilmore
Penny Glossinger
Jim Goekler
Gary Goff
Emmett Goins
Elpidio Gomez
Hector Gomez
Jose Gomez
Maria Gomez
Moises Gomez
Daniel Gomez-Sigala
Alicia Gonerway
Adrian Gonzalez
Imelda Gonzalez
John Gonzalez
Manuel  Gonzalez
Marisela Gonzalez
Raul Gonzalez
Victor Gonzalez
Barry Goodson
Dale Graham
Buenas Granados
Colter Grant
Herschell Grayson
Jesse Green, Jr.
John  Griffin
Ronald Grimes

Daniel Groff
Carolina Guillen
Ronald Guinn
Cassie Gunn
Evelyn  
   Gutierrez Lainez
Erasmo Guzman
Georgina Guzman
Nancy Hackney
Jack Hall
Kelly Hall
Stephen Hall
Scott Hamilton
Jeffrey Hammer
Sam Hammoud
Robert Hanna
Donald Harden
Glen Harris
Stacey Harris
Robi Hartmann
Heather Haskins
Kenneth Havard
Kevin Hawkins
Billy Hawley, Jr.
Tim Hefflin
Stephen  Hegvold
Daniel Henderson
Justin Henderson
Kyle Hendrick
Mike Hensley
Armando Hernandez
Corcina Hernandez
Francisco Hernandez
Lily Hernandez
Luis Hernandez
Maria Hernandez
Mariano Hernandez
Takeo Higa
Brenda Higgins
Larry Highfield
Dewayne Hightower
Bobby Hillburn
Juan Hinojosa
Tyson Hinther
Clyde Hitchye
Bon Hoang
Samuel Hobson
Bryan Holland
Donna Holloway
Lawrence Honel
Stephen Hoover
Terri Horn
Wilburn Horner, Jr.
Daniel Horrell
Stanley Horton
Jerry Houston
David Howard
Larry Howard
Zam Htang
Lydia Hudson
Philip Hudson
Anthony Huffman
Jimmy Hughes
Rosario Huizar
Ronald Hutchcraft

Gary Hutchins
Tan Huynh
Okechukwu Ibeh
Alexander Ignatenkov
Samuel Ingram
Daniel Iya
Belinda Jackson
Jeff Jackson
Danny Jacot
Alma Jacquez
Miguel Jacquez
Jose Jamaica
Mckinley James
Jason Jewell
Genelle Jimboy
Maria Jimenez
Raul Jimenez
Vincent Jimenez
Pedro Jimenez-Delfin
Frederick Jimmerson
Ed Johnson
Rex Johnson
Sylvia Johnson
Danny Jones
David Jones
Djuan Jones
Henry Jones
Raymon Jones
Remia Jones
Rose Jones
James Jones, Jr.
Sean Jordan
Jaime Juarez
Leandro  
   Jumelles Nunez
Brian Justice
Patrick Kaiser
Hau Kam
Alex Kap
Dal Kap
Do Kap
Lian Kap
Ngin Kap
Brian Kastl
Richard Keaton
Aaron Kelly
Gregg Kennedy
Do Khai
En Khai
Gin Khai
John Khai
Lang Khai
Mang Khai
Nang K. Khai
Nang Z.  Khai
Pau Khai
Peter Khai
Thang Khai
Go Kham
Ngun Kham
Pavel Kharabora
Kirk Khillings
Dai Khup
Ngin Khup
Thang Khup

Alan Kilgore
Andrew Kilgore
Suan Kim
Thang Kim
Joseph King
Lori King
Randy King
Russell King
Bryan Kirk
Aleksandr Kiryukhin
David Knebel
Robert Knuth
James Koss
Edward Kracke, Ii
Robert Krafjack
Larry Kreps
Mikhail Krupenya
Karl Kuenemann
Laura Kyle
Mike Lafond
Do Lal
Deborah Lane
Donald Laney
Ugin Lang
Kim Langston
Martin Larsen
Michael Lavallee
Jeffrey Lawson
Ronald Lawson
Lai Le
Michel Lebel
Jose Lebron
Jacqueline Lee
Rhonda Lee
Matthew Leeper
Hugo Lerma
Ronald Lester
Cin Lian
David Lian
Hau Lian
Kam Lian
Sing Lian
Thang Lian
Tuan Lian
Darrin Liggins
Ping Lin
Jerry Lincoln
Thomas Lincoln
William  Lindsay
Anthony Little
Rene Livesey
Joel Lockmiller
Jonathan Lockmiller
Dustin Long
Linda Longoria
Alonzo Lopez
Ana Lopez
Arturo Lopez
Margarito  Lopez
Rafael Lopez
Raul Lopez
Thomas Lopez
Carlos Lopez Rodriguez
Johnny Lopez, Jr.
Paul Lowery

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Oscar Lozano
Jarrad Ludlow
Quannah Ludlow
Mariana Luna
Michael Lybarger
Rodolfo Macias  
   Flores
Jorge Madrigal
Monica Magana
N Mai
Barbara Malone
Carlos Malone
Jeffrey Maly
Maria Mancilla
Cin Mang
Khup Mang
Lang Mang
Lian Mang
Nang Mang
Ngin Mang
Sei Kho Lun Mang
Eric Mann
Evelyn  Manning
Adam Mansfield
Raul Manzo
Georgina Manzo  
   De Barrera
William Markwardt
Ma Marquez  
   De-Gilbreath
Ana Marroquin
Eco Marshall
Barbara Martinez
Francisco Martinez
Javier Martinez
Juan Martinez
Karen Martinez
Laura Martinez
Kenneph  
   Martinez Baez
Francisco  
   Martinez Leon
Hector  
   Martinez Molina
Ivan Martinez-Lebron
Florentino  
   Martin-Romo
Timothy Marvin
Thomas  
   Masengale, Jr.
Beverley Mason
James Mason
Erik Massey
Charles Mattocks, Iv
Ron Mauch
Antonio Mauricio
Leonard Maxwell
Duane Mayfield
Courtney Mcafee
Deborah Mcateer
Tina Mcbeath
Robert Mcbowman
Christopher  
   J. Mcclain
Christopher  

   K. Mcclain
Dirk Mcclellan
Roy Mcconnell
Corey Mccowan
Debra Mccowan
Wesley Mccowan, Jr.
Shawn Mccrary
Marc Mccuin
Kathy Mcculloch
Loyd Mcdaniel
Sharon Mcdaniel
James Mcelroy
Deborah Mcfarlin
Terry Mcgee, Ii
Domingo Mcknight
Gina Means
Patricia Medina
James Melda
Silvestre Mendez 
Gonzales
Vivian Meyer
Ronald Mikel
Glenn Milam
Michael Miles
Ranulfa Milian
Chris Miller
Jesse Miller
Mykea Miller
Michael Milton
Brian Mingle
Bruce Minton
Scarlett Miranda
Jay Modisette
Ronald Modlin
Irma Moguel
Braulio Moises-Lee
Jose Molina
Jose Monreal
Enoc Montes
Clay Moo
Jon Moody
Marc Moore
Maria Moore
Tony Moore
Alfonso Moran
Ron Morehead
Tony Morehead
Berta Moreno
Matthew Morgan
David Morgerson
Jaylon Morris
Marcus Morrow
Clayton Mote
Darrell Mote
Marc Moxley
Do Muang
Eric Mulliniks
Kai Mung
Kam Mung
Lang Mung
Lian Mung
Nang S. Mung
Nang Z. Mung
Pum Mung
Sian Mung

Suaan Mung
Suan Mung
Thang Mung
Thawng Mung
Vum Mung
Jesus Munoz
Eduardo  
   Murillo-Munoz
Johnny Musgrave
David Myers
Noe Nabor
Sing Nang
Marcus Naranjo
Vincent Nash
Go Naulak
Jose Nava
Maria Nava
Abel Navejas
Clayton Neal
Samuel Neale
Natalie Neilson
Kathleen Nelson
Ronald Nelson
Hoang-Chi Nguyen
Phuoc Nguyen
Karen Niles-Blayer
David No
Hank Noeske
Jerry Nolan
Christopher Norfleet
Willie Norfleet
Robert Norfleet, Jr.
Richard Norgren
Eric Norris
Debra Nothnagel
John Nutt
Deangelo Oakley
Michael O’brien
Oran Offield
Alexander Ofosu
John Ogle
Ruben Olan Garcia
Maria Olivas  
   De Torres
Scotty Oliver
Anthony Oliveras
Eric  Olson
Della Onditi
James O’neill, Jr.
James O’neill, Sr.
Benjamin Orme
Leticia Orona
Margarita Orona
Margarita  
   Orozco Dehuizar
Carlos  
   Orozco-Torres
Julio Ortega, Jr.
Sandra Osbern
Jennifer Overmeyer
Juan Oyola
Martin  
   Ozura-Carrillo
Guillermo Pacheco
Edmundo Paiz

Alex Palmer
J Paniagua
Noemi Paniagua 
Belmonte
Jared Parker
Jose Parra
Jason Pate
Jeanetta Pate
Corry Patterson
Cia Pau
Dal Pau
Gin Pau
Kam Pau
Liang Pau
Nang  Pau
Thang Pau
Thang L. Pau
Vaden Paulsen
Travis Pearson
Juan Pedroza
Kimberly Peeks
Vladimir Peniaz
Shamata Pentecost
Cesar Perez
Juana Perez
Sergio Perez
Ma Lourdes  
   Perez Perez
Mike Perry
John Peters
Ladrue Peters
Daniel Peurifoy
Song Phan
Randy Phelps
Nicholas Phifer
Tony Phillips
Thang Pi
Pum Piang
Thang K. Piang
Thang L. Piang
Zam Piang
Pedro Pina-Valles
Jose Pineda
Maria Plata
Susanne Poindexter
Basant Pokhrel
Renu Pokhrel
Mark Pool
Timothy Pool
Ardeshir Pouraryan
Phillip Powell
Rudy Powell
Greg Powers
Jeffery Powers
Jose Prado-Huerta
Lian Pu
Alma Puga
Javier Quezada
Caleb Quigley
Jesus Quinones
Cold Rain
Nimalakirthi  
   Rajasinghe
Antonia Ramirez
Jose Ramirez

Raymon Ramirez
William Ramirez
Nandy Ramirez B
Robert Ratliff
Kyle Ratzlaff
Terry Ratzloff
Robert Rayno
Thomas Read
Sandra Reader
Joseph Reagh
Diego Rebollar
Jose Recio-Gomes
Peggy Redden
James Reed
Freeman Reed, Jr.
Margaret Reeves
Alberto Rendon
Svyatoslav Reshetov
Thomas Reynolds
David Ribbe
Angela Rideout
Brett Riegel
Delmecio Riser
Stephen Riser
James Ritchie
Genoveva Rivera
Luis Rivera Mendoza
Laura Roberson
Paul Roberts
John Roberts
Benton Robinson
Michael Robinson
Jeffery Robison
Alex Rodriguez
Diana Rodriguez
Edgar Rodriguez
Gilberto Rodriguez
Hector Rodriguez
Maria Rodriguez
Melvin Rodriguez
Rivelino Rodriguez
Teresa Rodriguez
J Rodriguez-Flores
Don Rogers
Lidia Rojas
Nelson Rojas
Carolina  
   Rojas-Gonzalez
Terry Rombach
Richard Romo
David Ruiz
Ricardo Ruiz
Vicente Ruiz
Ava Russell
Jimmy Russell
Miguel  
   Saez Sepulveda
Adan Salazar
Nora  Salazar
Walter Salazar
David Saldivar
Jose Saldivar
Maria Saldivar
Miguel Saldivar
Victor Saldivar

Diana Salinas
Beatriz Sanchez
Betty Sanchez
Estevan Sanchez
Esperanza  
   Sanchez Ruiz
Luis Sanchez-Lopez
Ivelisse  
   Sanchez-Rivera
Christina Sanders
Tanisha Sanders
Michael Sandor, Jr.
Jason Sanford
Cin Sang
Thang Sang
Thiam Sang
Agustin Santana
Reinaldo Santana
Hector Santiago
Wenceslao Santiago
Carlos  
   Santiago Torrez
Humberto Santillan
Ignacio Santillan
Pedro Santillan
Angela Santillano
Bennett Sapp
David Sarant
Richard Satterfield
Erick Sawyer
William Scharosch
Brummett Scott
Joseph Scott
Kenneth Scott
Vivian Scroggins
Marcus Seip
Carrol Shackelford
Gregory Shaw
Ontario Shaw
Thomas Shaw
Kathy Sheffield
Kathleen Shepard
Jackie Shephard
Barbara Shipman
Consuela Shore
Lian Sian
Nelson Sierra
Oscar  
   Sierra-Matamoros
Tabatha Sikes
Cory Simmons
Patrick Simpson
Kap Sing
Thang Sing
Russell Singleton
Michael Skinner
Larry Slone
Brett Smith
Renaldo Smith
Ricardo Smith
Ryan Smith
Sweetie Smith
Jose Solares
John Soler
Malcolm Soles

Irasema Solis
Maria  Solis
Nemisia Solis
Paula Sosa
Kevin Souvannasing
Denney Sowder
Ronnie Spangler
Ronnie Sparks
Elda Spears
Jameson Spires
Michael Sportel
Richard Sprowles
Jess St George
Lawana Stane
Larry Stanton
Lekitha Stephenson
Stephen Stepp
Brent Stockton
Adam Stoker
Allen Strahm, Iii
Michael Straub
Billy Strength
Brandon Strong
Khup Suan
Mang Suan Pau
Eric Suarez
Nang Sum
Rosa Summers
Pau  Sut
Carla Swygert
Marcus Syas
Eric Sypert
James Taber
Timothy Taber
Brian Talley
William Tankersley
Joe Tart
Daniel Tate
Larry Tate
Mark Tate
Tenna Tatum
Charles Taylor
Deborah Taylor
Eric Taylor
Fleshia Taylor
Thomas Taylor
Andrea Teakell
Kevin Teakell
Robert Teis
Cin K. Thang
Cin L. Thang
Kam Thang
Kham Thang
Pau S. Thang
Pau Z. Thang
Suan Thang
Tual Thang
Tuan L. Thang
Tuan S. Thang
Lang Thawng
Zam Thawng
Lee Thomas
Cheryl Thomason
David Thompson
Wesley Thurmond, Ii

Gabriela Tirado
William Tobar
Christopher Toles
Molly Tompkins
Breny Tornes
Jose Torres
Reinaldo Torres
Sean Torres
Cremeris Towns
Marisol Trejo
Martin  
   Trevino-Saldana
Mark Tribble
Ha Trinh
Kham Tuang
Suum Tuang
Thang Tuang
William Tuang
Joseph Tubbs
Gin Tung
Thawng Tung
Paul Turbe
Charles Turner
Richard Twilling
Phyllis Tyiska
James Tyler
Jesus Tzul
Pernell Underwood
Maria Urquiza
Yadira Urquiza
Thong Vak
Allen Vang
Shannon Vann
John Vanness
Joel Vanscoy, Jr.
Javier Vargas
Shawn Vawter
Jose Vega
Antonio Velasco
James Velde
Jovane Vences
Juan Vences
Angel Venegas
Salome Vera
Laura Vergara
James Verhamme
George Verrett
Teresa Victory
Efrain Villa
Selina Viramontes
Cuong Vo
Suong Vo
Tong Vo
Ning Vung
Stephen Wakefield
Diana Walker
Jermaine Walker
Joshua Walker
Roderick Walker
Theodore Walker
Mark Walkup
Leslie Wallis, Jr.
Stacey Walters
Derek Walton
Gayle Ward

Phillip Ward
Billy Warden, Ii
Perry Warner
Donald Washington
Vielka Washington
John Weaver
Demetria Webb
Anthony Welch
Delorence Wells
Jessie Welty
Susan Werner
Sharon West
Deborah Whitaker
Harvey Whitaker
Justin White
Sean White
David Whitlock
Gussie Whittaker
Steven Whorton
Billy Wilburn
Christopher Wiles
Jackie Wiles
Jerry Wiles
Sherri Wilkins
James Wilkinson
Bryant Williams
Chante Williams
Donna Williams
Kyle Williams
Robert Williams
Vandoil Williams
James Williamson
Jarvoris Willis
Brandi Wilson
Daniel Wilson
James Wilson
William Wilson
Roderick Wilson, Sr.
Thomas Wind
Thomas Wingo
Wanda Winkfield
Whitney Winn
Micah Wisdom
Edward Wofford
Justin Wolf
Curtis Wood
Dixie Wright
Jim Wyrick
Linda Wyrick
Ector Yancey, Jr.
Morgan Yeubanks
Kathryn Young
Patricia Young
Josh Youngs
Nikolay Zagorodniy
Lang Zah Lang
Pau Zang
Derrick Zarnt
Aurora Zavaleta
Mercedes Zavaleta
Luis Zepeda
Juan Zermeno
Virginia Zermeno

55

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AAON, Inc.
2425 South Yukon Avenue • Tulsa, OK 74107
918.583.2266 • Fax: 918.583.6094

AAON Coil Products, Inc.
203 Gum Springs Road • Longview, TX 75602
903.236.4403 • Fax: 903.236.4463

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