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AAON

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FY2005 Annual Report · AAON
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AON 06012 AR Glamour  4/12/06  11:01 AM  Page 1

f e a r l e s s .

2 0 0 5

A n n u a l

R e p o r t

    
AON 06012 AR Glamour  4/12/06  10:45 AM  Page 2

b o u n d l e s s .

When dark clouds mass on the horizon, one

question  demands  an  answer: Will  you

descend  to  a  safe  place  and  wait  out  the

storm … or will you meet the turbulence head

on, setting  your  trim  to  surmount  it?  Where

others have taken shelter,AAON has chosen to

move  forward, rising  above  and  beyond

every challenge … leading the way into an

open, endless expanse of possibilities.

AON 06012 AR Glamour  4/12/06  10:45 AM  Page 4

c o m p a n y   p r o f i l e

f i n a n c i a l   h i g h l i g h t s

A AO N , I N C . E N G I N E E R S , M A N U FAC T U R E S   A N D   M A R K E T S   CO M M E R C I A L   A I R   CO N D I T I O N I N G   P R O D U C T S

I N C LU D I N G   H E AT I N G , V E N T I L AT I N G , H E AT   R E COV E RY   A N D   H E AT   T R A N S F E R   CO I L S .

The company’s product offering includes single unit systems containing heating,cooling and heat recovery components in

a self-contained cabinet; chillers and condensing units consisting of heat exchangers, fans and compressors; air handling

units consisting of coils,blowers and filters;and coils consisting of a sheet metal casing with tubes and fins.

AAON sells to a wide range of customers through sales representatives, as well as to many national accounts, such as Wal-Mart stores,

Dillard’s  and  Wendy’s. Approximately  55%  of  the  company’s  sales  come  from  new  construction; the  remaining  from  renovations  and

replacements. AAON has about a 13% share of the commercial rooftop market and a 1% share of the coil market.

Headquartered in Tulsa, Oklahoma, AAON was founded in 1988. The company owns AAON Coil Products, Inc., a Longview, Texas-

based manufacturer of coils, air handlers and condensing units. In Spring of 2004, AAON acquired Air Wise, Inc., of Mississauga, Ontario,

a  company  that  engineers, manufactures  and  sells  custom  air-handling  units, makeup  air  units  and  packaged  rooftop  units  for

commercial and industrial buildings.

R O O F T O P   U N I T S

A I R   H A N D L E R S

C O N D E N S I N G   U N I T S

RM Packaged Rooftop 
Units & Air Handlers

H2 Horizontal Indoor 
Air Handlers

CA Condensing Units

RN Packaged Rooftop 
Units & Air Handlers

V2 Vertical Indoor 
Air Handlers

CB Condensing Units

RL Packaged Rooftop 
Units & Air Handlers

M2 Air Handler

HA Horizontal 
Discharge 
Cooling Units

HB 2 to 5 Ton 
Packaged Units

MN Custom Direct Fired 
Make Up Air Unit

NJ/TBA  Custom 
Air Handler and Indirect 
Fired Make-Up Air Unit

CL Condensing Units

C H I L L E R S

LL Chillers

C O I L S

Coils Booster Coils,
Hot Water, Chilled 
Water & DX Coils

SALES
In $ Millions

2005

2004

2003

185.2

171.9

147.9

BACKLOG
In $ Millions as of the end of December

2005

2004

2003

54.8

49.4

41.9

STOCK PRICE
As of the end of December

2005

2004

2003

$17.88

$16.07

$19.41

Income Data ($000)

Net Sales
Gross Profit 
Operating Income
Interest Expense
Interest Income
Depreciation
Pre-Tax Income
Net Income
Earnings Per Share

(Basic)
(Diluted)

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 Share

Funds Flow Data ($000)

Operations
Investments
Financing
Net Increase (Decrease) in Cash

Ratio Analysis

Return on Average Equity
Return on Average Assets
Pre-Tax Income on Sales
Net Income on Sales
Total Liabilities to Equity 
Quick Ratio
Current Ratio
Year-End Price Earnings Ratio

1
1

2
2

3

4
2

2005

2004

2003

2002

2001

$ 185,195 
35,291 
17,814 
16 
67 
8,503 
18,332 
11,462 
0.93 
0.90 

$ 171,885 
26,864 
11,650 
38 
183 
5,732 
12,379 
7,521 
0.60 
0.58 

$ 147,890 
35,885 
20,976 
21 
346 
5,435 
21,853 
14,227 
1.12 
1.07 

$ 154,141 
37,549 
22,478 
95 
214 
4,915 
23,110 
14,611 
1.11 
1.06 

$ 156,485 
38,667 
22,781 
892 
- 
4,380 
22,486 
14,156 
1.09 
1.04 

$ 33,372 
62,950 
50,581 
45,062 
1,837 
113,606 
29,578 
59 
79,495 
6.23 

$ 27,939 
55,998 
49,229 
37,017 
3,994 
105,227 
28,059 
167 
71,171 
5.51 

$ 35,369 
64,635 
37,450 
31,285 
16,186 
102,085 
29,266 
- 
67,428 
5.09 

$ 21,149 
46,482 
35,231 
27,114 
15,071 
91,713 
25,333 
- 
62,310 
4.53 

$ 19,888 
42,273 
34,022 
22,273 
1,123 
76,295 
22,385 
985 
50,041 
3.67 

$ 11,966 
8,189 
(4,200)
(157)

$ 16,159 
(11,741)
(9,857)
(5,192)

$ 16,469 
(7,626)
(7,728)
1,115 

$ 21,931 
(16,118)
(1,865)
3,948 

$ 23,879 
(8,817)
(13,956)
1,106 

16.8%
10.1%
9.9%
6.2%
0.4 
1.2 
2.1 
20 

10.9%
7.3%
7.2%
4.4%
0.5 
1.1 
2.0 
28 

21.9%
14.7%
14.8%
9.6%
0.5 
1.3 
2.2 
18 

26.0%
17.4%
15.0%
9.5%
0.5 
1.5 
1.8 
17 

32.5%
18.5%
14.4%
9.0%
0.5 
1.1 
1.9 
16 

1 = Reflects 3-for-2 stock splits in September 2001 and June 2002.
2 = Reflects reclassification of revolving loan from long-term debt to current liabilities for the years 2001 and 2002.

3 = Actual dollars and diluted number of shares for all years reflect both 3-for-2 stock splits.
4 = Cash, cash investments + receivables / current liabilities

AON 06012 AR Glamour  4/12/06  10:45 AM  Page 6

D E A R   S H A R E H O L D E R ,

achieved a 7.7% increase in sales to $185.2 million from $171.9 million.

Gross  profit  widened  as  a  result  of  higher  volume  and  improved

We were able to attain record sales levels this past year and experienced

efficiencies, rising  31.2%  to  $35.3  million  from  $26.9  million. SG&A

a  recovery  in  net  income  growth; however, it  is  important  to  note  a

expenses as a percentage of sales increased to 9.4% or $17.5 million

number of factors that had a profound impact on our overall profitability.

from  8.8%  or  $15.2  million. Despite  that  increase, operating  income

Raw  material  prices  continued  to  rise, which  affected  our  cost  of

climbed 52.1% to $17.8 million or 9.6% of sales from $11.7 million or

manufacturing. During  2004, the  price  of  galvanized  steel  more  than

6.8% of sales. Net income advanced similarly to $11.5 million or $0.90

doubled  by  the  third  quarter  from  the  previous  year  while  the  price

per  share  from  $7.5  million  or  $0.58  per  share. Earnings  per  share

moderated during the fourth quarter.The prices of both copper and steel

calculations  are  based  upon  12.8  million  fully  diluted  shares

continued to rise during 2005, climbing 28% and 13%, respectively.

outstanding in 2005 and 12.9 million shares in 2004.

r i s i n g   t o     a n y   c h a l l e n g e .

S T R O N G   F I N A N C I A L   C O N D I T I O N

We  completed  2005  in  solid  financial  condition. At  December  31,

2005, total  current  assets  were  $63.0  million  with  a  current  ratio  of

Our  costs  relating  to  Sarbanes-Oxley  compliance, involving

2.1:1. We  had  minimal  long-term  debt  and  our  cash  equivalents

management’s time and effort as well as external costs,gained over the

(including  certificates  of  deposit)  were  $1.8  million. We  maintained

previous year.Also,higher than normal repair expense of $594,000 was

this  liquid  position  despite  $10  million  of  capital  expenditures  and

incurred in the fourth quarter to moderate sheet metal machine down

the  continuation  of  our  stock  repurchase  program  initiated  in

time, now  and  in  the  future. Finally, while  AAON  Canada  did  exhibit

October 2002. During 2005, the Company purchased 182,900 shares

satisfactory top-line growth, particularly in the last half of the year, its

at  a  cost  of  $3.2  million. Since  inception  of  the  current  program

profitability was restricted by a number of factors.For the full year 2005

authorizing the purchase of up to 1.3 million shares or approximately

this subsidiary lost $1.8 million.

10%  of  the  shares  outstanding, AAON  has  spent  $22  million  and

Total industry volume in unitary products over five tons rose 7.1%

purchased  1,257,864  shares. On  February  14, 2006, the  stock

to  $1.36  billion  from  $1.27  billion, aided  by  continuing  gains  in  new

repurchase  program  was  suspended. Total  shareholders’ equity

office  and  manufacturing  plant  construction  which  increased  on  an

improved  to  $79.5  million  (up  11.7%), equal to $6.23 per  share (up

industry-wide  basis  8.9%  and  11.3%, respectively. The  educational,

13.1%) at December 31, 2005, compared to $71.2 million or $5.51 per

healthcare and other markets performed well, while the retail sector

share  a  year  earlier. In  2005, our  return  on  average  shareholders’

witnessed a modestly improved performance. Benefiting from strong

equity was 16.3%,up from 10.9% in 2004.Our order backlog at March

demand  for  our  larger  tonnage  units  (over  30  tons), the  Company

31, 2006 was $47.6 million.

Though copper and steel prices
continued to advance through
much of 2005, we were able to
offset the increase somewhat
through higher volume and
increased efficiencies.

To comply with the Sarbanes-Oxley Act, we have
invested $1.4 million in new personnel and new
documenting, testing and reporting procedures.
These costs should moderate in 2006.

AON 06012 AR Glamour  4/12/06  10:45 AM  Page 8

C A P I TA L   E X P E N D I T U R E S

C H A N G E   I S   I N   T H E   A I R

water chiller,boiler and with the pumping equipment offered as an

Over the past five years we have spent approximately $50 million on

Sensing the opportunity to position AAON as industry leader in certain

added  option. Prior  to  its  introduction, this  type  of  packaged

capital improvements to satisfy the anticipated demand for our new

product  categories, the  Company  initiated  changes  to  its  existing

system was available only in the custom built market. We estimate

and existing products. In 2004 we had record expenditures of $17

product  line  introducing  both  new  products  as  well  as  making  a

this segment of the commercial market to be about $800 million

million  with  approximately  $13  million  toward  increasing  our

number of technological alterations to its existing product line.

annually. In  addition, the  introduction  of  packaged  water  chillers

physical and machinery capacity at both our Tulsa, Oklahoma and

The introduction of double wall composite foam panels for the

gives the Company further access to the air handler market, a $1.4

Longview, Texas facilities. In the past year we spent $10 million on

cabinets for many of our products has enabled the Company to take

billion segment of the commercial market.

capital  improvements  with  more  than  80%  going  toward  new

the industry lead in this manufacturing process.The traditional method

Our CB series, a split system air-conditioning and heating unit

manufacturing equipment and the refurbishing of old machinery. In

of  manufacturing  the  walls  of  the  cabinet  is  to  install  fiberglass

with  capacity  of  2-5  tons, aimed  at  the  new  and  replacement

the  expectation  of  accelerated  demand  for  both  our  existing

between two pieces of steel. Since the cabinet is usually placed in an

residential and commercial markets, is now ready for distribution

product  line  and  a  number  of  recently  introduced  products, our

outdoor area, and subject to the elements, there often is a significant

after  numerous  delays  regarding  computer  software. This  system

l e a d i n g   b y   i n n o v a t i

i n g .

loss  of  heating  or  cooling  efficiency. The  use  of  foam  rather  than

will use the “green” refrigerant R-410A and operate with an energy

fiberglass has allowed us to produce a product which is lighter, more

efficiency  of  13  SEER. The  Company  will  distribute  this  product

cost efficient and,importantly,a better insulator;hence,the “R”value of

through its manufacturers’ representative network for sale to local

capital expenditure budget for 2006 is estimated at $12-14 million.

the cabinet is significantly improved. Approximately one-third of our

contractors. The approved contractor will place the order through

We intend to increase our sheet metal fabricating capacity and our

product line is now manufactured with foam-insulated cabinets.

AAON’s website and direct delivery will be made to the contractor.

coil  manufacturing  capacity. By  the  end  of  2006  our  combined

Our  RN  product  line  (26  to  70  tons), which  constitutes

We estimate the available market for the product and distribution

manufacturing capacities in Tulsa and Longview will accommodate

approximately 25% of our total dollar shipments,now is manufactured

method to be in the vicinity of $2.4 billion.

annual  volume  in  the  area  of  $300-350  million  while  our  plant

using  our  recently  introduced  direct  drive  blower  assemblies. These

capacities  should  reach  $700-800  million  when  we  include  space

assemblies  operate  without  drive  belts, hence  no  adjustment  or

R E G U L AT O R Y   M A N D AT E S   M E A N   C H A N G E S

presently  leased  out. We  expect  to  have  plant  and  equipment

replacement  of  fan  belts  is  necessary. Furthermore, this  product

Due to recent government mandates, changes within our industry

capacities  of  $45  million  and  $20  million, respectively, in  our

operates  with  our  new  airfoil  backward  inclined  fan  which  creates

have occurred with greater frequency. The Sarbanes-Oxley Act of

Canadian facility.

higher efficiency than the traditional fan design.Approximately 30% of

2002  requires  evaluation  and  testing  of  financial  reporting  and

We  have  taken  significant  steps  to  position  the  Company  as

our product line uses the new direct drive blower assemblies.

accounting  controls  for  public  corporations. Over  the  past  two

one  of  the  most  innovative  in  the  industry. During  the  past  three

The  Company  continues  to  introduce  innovative  new

years,in order to conform with the requirements of the Act,we have

years we have spent $3.6 million on research, development and R&D

products  which  allows  AAON  to  pursue  additional  HVAC  market

added  personnel  as  well  as  documenting, testing  and  reporting

engineering. Our product line is now recognized as one of the most

segments. For  example, the  Company  recently  released  a  mass

procedures, at a cost of approximately $1.4 million. We expect to

technologically innovative within the industry.

produced, packaged mechanical equipment room consisting of a

witness some moderation of these costs in the current year.

We retooled our manufacturing facilities
well in advance of EPA deadlines, making
AAON the first in the industry to offer
environmentally friendly R-410A
refrigerant on our entire product line.

AAON maintains a leading edge in the industry with
engineering advances such as double-wall composite
foam panels, direct drive blower assemblies and
innovative solutions to humidity control.

AON 06012 AR Glamour  4/12/06  11:07 AM  Page 10

The  regulatory  posture  regarding  both  environment  and

In  2004, significantly  in  advance  of  the  required  deadline,

important  steps  to  correct  these  problems, the  most  important

Furthermore, AAON  Canada’s  custom  and 

semi-custom

energy  conservation  will  cause  multi-faceted  changes  within  the

AAON  became  the  first  manufacturer  to  make  newer,

being  the  installation  of  certain  software  systems, which  enables

manufacturing  expertise  will  allow  many  of  our  representatives  to

industry  that  should  have  a  long-term  effect  not  only  on  our

environmentally friendly R-410A refrigerant available on its entire

the  Company  to  analyze  the  costs  and  material  content  of  its

pursue this segment of the rooftop and air handling markets, which

product line but also in the way we conduct our business.

line of products. Currently, approximately 25% of our product line

backlog. The  end  result  will  be  more  realistic  pricing. Revenue

were not available to them prior to the acquisition.

Effective January 2006, the Department of Energy (DOE) and

operates with R-410A.

growth in 2006 will be gradual and selective and we estimate total

I believe that the capital and effort we expended over the

the Environmental Protection Agency (EPA) have prescribed that all

revenue  in  the  range  of  $14  to  $15  million. We  believe  this

past five years to redesign our basic product line and introduce

equipment under six tons of cooling capacity must have a Seasonal

A A O N   C A N A D A   –   P R O G R E S S   T H R O U G H   C H A N G E

subsidiary will operate at breakeven or with a modest profit.

new products, as well as to enlarge our physical and machinery

Energy  Efficiency  Ratio  (SEER)  of  13. Our  CB, HB  and  RM  product

The  May  2004  acquisition  of  Air  Wise  based  in  Ontario, Canada,

capacity, should  enable  the  Company  to  continue  to  show

lines  (2-5  ton  cooling  capacity)  were  completely  redesigned  and

allowed  AAON  to  enter  the  custom  and  high  end  of  the  semi-

S A L E S   R E P R E S E N TAT I V E S ’ P E R F O R M A N C E

further  progress  this  year. I  am  confident  the  Company  can

equipped  with  larger  heat  transfer  surfaces  and  with  higher

custom rooftop and air handling markets. For the partial year 2004,

Our sales representatives’network with 110 offices in all 50 states and

achieve  and  maintain  annual  sales  growth  rates  of  at  least  12-

efficiency compressors. These  product  lines  now  operate  with  a

AAON Canada had sales of $3.3 million with an operating loss of

10 provinces of Canada performed extremely well during 2005, and

15%  over  the  next  five  years. We  believe  the  manufacturers’

SEER of 13 or better.

$900,000. The integration of this acquisition has taken longer and

posted record results. The representative network produced a sales

representative  network  will  continue  to  provide  a  major

Effective 

in  2010,

the  EPA  has  mandated  that  all

has proven more costly than originally planned due to a number of

gain of 9.3% to $157.3 million or 85% of total corporate sales.In 2004

contribution to AAON’s future growth.

manufactured  HVAC  equipment  must  use  refrigerants  that  do

factors. While  we  witnessed  excellent  revenue  growth  in  2005  to

representative  sales  were  $146.3  million  or  82%  of  total  corporate

not  contain  chlorine, thereby  reducing  the  effect  of  ozone

$11.2  million, a  number  of  orders  were  delivered  at  price  levels

sales. Our aggressive posture regarding new product introductions

E M P L O Y E E S

depletion in the atmosphere.The year 1999 has been established

quoted  prior  to  certain  price  increases. In  addition, in  order  to

for additional HVAC market segments will allow our manufacturers’

We  have  always  regarded  our  employees  as  one  of  our  most

as a benchmark year for the production of R22, the traditionally

accommodate the  higher  volume, we  accelerated  new  hirings

representatives  entrance  into  new  markets  producing  significant

important assets. We  believe  that  well-motivated, satisfied

used  refrigerant  for  the  HVAC  industry. Reductions  in  the

which  resulted  in  a  significant  amount  of  training  and  overtime

incremental  sales. In  addition, our  CB  series  of  products  aimed

employees whose focus is on meeting performance goals produce

production of R22 of 35% were mandated as of January 1, 2004

costs.Furthermore,we found that our internal purchasing methods

specifically at the residential market is now ready for marketing.The

superior  results  over  the  long  term. Our  emphasis  on  employee

and  January  1, 2010, respectively, with  complete  elimination  of

were not aligned with our estimating and billing process. The net

Company  will  distribute  the  CB  series  exclusively  through  its

retention and motivation has led us to create a variety of programs

production on January 1, 2020.

result  was  an  operating  loss  of  $1.8  million. We  have  taken

manufacturers’representatives,which will add to the network’s sales.

to enhance the skills of our core personnel.

P r o g r e s s   a t   m a c h   s p e e d s

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.

AUGUST
AAON, an
Oklahoma 
corporation,
was founded.

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

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

NOVEMBER 
Listed on the NASDAQ
National Market System.

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

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

APRIL
AAON received U.S. patent for
Blower Housing assembly.

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

SPRING
Completed Tulsa,
Oklahoma, and
Longview, Texas, plant
additions yielding a
total exceeding 1
million square feet.

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

MAY
Purchase of
the assets of
Air Wise, of
Mississauga,
Ontario,
Canada

JUNE
3-for-2
stock split.

NOVEMBER
Introduction of
light commercial/
residential 2 to 5
ton condensing
units and rooftop
heating and
cooling units

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

1 9 8 8     | 1 9 8 9     | 1 9 9 0     | 1 9 9 1     | 1 9 9 2     | 1 9 9 3     | 1 9 9 4     | 1 9 9 5     | 1 9 9 6     |

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SEPTEMBER
Purchase of
John Zink Air
Conditioning
Division. 

DECEMBER 
Listed on
NASDAQ Small
Cap – Symbol
“AAON.”

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

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

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

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

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

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

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

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

JULY
Started production of
polyurethane foam-filled
double-wall construction
panels for rooftop and
chiller products using
newly purchased
manufacturing equipment

        
AON 06012 AR Glamour  4/12/06  10:45 AM  Page 12

One of the largest motivating factors has come through our

subjects. All personnel have access to these training programs and

retirement  plan  which  provides  a  match  in  company  stock.

can use them to refresh their skills or to prepare for advancement.

Employees  with  one  year  of  service  are  now  able  to  sell  the

We also encourage the pursuit of broader skills through training at

Company stock in their accounts, but as of December 31, 2005, less

external  educational 

facilities  via  a  generous 

tuition

than 10% of such stock had been redirected into other investments

reimbursement  program. These  efforts  are  all  focused  upon  our

and  the  plan  held  more  than  4%  of  the  Company’s  outstanding

goal  of  improving  efficiencies  and  productivity  which  will

stock. While all purchases of Company stock are made in the open

ultimately benefit our shareholders through increased profitability.

market, all sales are made directly to the Company at the closing

price  for  the  day. We  have  also  implemented  an  automatic

O U T L O O K

enrollment  and  increase  system  utilizing  specified  investments

On February 14 of this year, the Board of Directors voted to initiate

within  the  retirement  program  which  has  increased  plan

a semi-annual cash dividend of $0.20 per share payable on July 3,

participation to more than 90% with the highest savings rate ever.

2006,to the holders of record on June 12,2006.We believe this cash

By  helping  people  plan  for  their  future  in  the  easiest  manner

dividend policy is a clear and strong affirmation of the confidence

possible, we believe that we reduce their concerns and help them

we have in AAON’s growth in the future.

to focus upon their daily tasks.

The Company has made extraordinary progress over the past

An additional incentive connecting the Company’s financial

five  years  while  satisfying  the  demands  of  our  customers  and

performance  to  employee  compensation  has  been  through  the

government  regulators. This  could  not  have  been  accomplished

distribution  of  stock  options  to  a  broad  number  of  qualified

without  the  support  and  cooperation  of  our  customers, sales

personnel. Both the retirement and stock option programs are tied

representatives and shareholders, as well as the total loyalty of our

to  vesting  periods  which  reduces  the  focus  upon  short-term

outstanding employees, all of whose names appear at the end of

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, 2005

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)

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

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)

performance and enhances the retention of personnel. We have

this report.The Board of Directors and I want to thank all of you for

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. q Yes        q  No

3

also  provided  a  quarterly  bonus  equal  to  10%  of  the  Company’s

your past and continuing confidence and commitment.

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

q Yes        q No

3

pre-tax earnings paid equally to all eligible employees. Lastly, we

have begun implementing variable compensation systems which

Sincerely,

rapidly and directly tie compensation to the attainment of specified

goals  and  efficiencies. The  result  of  all  of  these  programs  is  to

concentrate employee focus on the performance of the Company.

Norman H. Asbjornson

To  assist  in  the  attainment  of  performance  objectives, we

President and CEO

provide training at our facilities in a wide variety of industry-specific

April 24, 2006

Product introductions such as our LL Chiller
provide access to new markets. This pre-
packaged system presents a cost-effective
alternative to custom-built mechanical rooms
in a commercial segment worth $800 million.

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.

3
q Yes        q No

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.

Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Act).

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

q

3
q Yes        q No

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, 2005) was $168,234,000.

As of February 28, 2006, registrant had outstanding a total of 12,273,037 shares of its $.004 par value Common Stock.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of registrant’s definitive Proxy Statement to be filed in connection with the Annual Meeting of Stockholders
to be held May 31, 2006, are incorporated into Part III.

AAON 10K  4/12/06  10:46 AM  Page 2

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TABLE OF CONTENTS

P A R T   I

Page
Number

Item 1. Business.

Item Number and Caption

PART I

1.

Business.

1A. Risk Factors.

1B. Unresolved Staff Comments.

2.

3.

4.

Properties.

Legal Proceedings.

Submission of Matters to a Vote of Security Holders.

PART II

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 and Executive Officers of Registrant.

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.

PART IV

15. Exhibits, Financial Statement Schedules.

1

4

6

6

6

6

7

8

9

14

15

15

15

17

18

18

18

19

19

20

General Development and Description of Business
AAON, Inc., a Nevada corporation, was incorporated on August 18, 1987.

The Company (including its subsidiaries) is engaged in the manufacture and sale of air-conditioning and heating equipment consisting of standardized

and custom rooftop units, chillers, air-handling units, make-up air units, heat recovery units, condensing units and coils.

Products and Markets
The Company’s products serve the commercial and industrial new construction and replacement markets. To date virtually all of the Company’s sales

have been to the domestic market, with foreign sales accounting for less than 4% of its sales in 2005.

The rooftop and condenser markets consist of units installed on commercial or industrial structures of generally less than 10 stories in height. Air-

handling 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, the Company emphasizes the replacement market.

Based on its 2005 level of sales of approximately $185 million, the Company estimates that it has a 13% share of the rooftop market and a 1% share of

the coil market. Approximately 55% of the Company’s sales now come from new construction and 45% from renovation/replacements. The

percentage of sales for new construction vs. replacement to particular customers is related to the customer’s stage of development.

The Company purchases certain components, fabricates sheet metal and tubing and then assembles and tests its finished products. The Company’s

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. The Company’s other finished products are coils consisting of a sheet metal casing with tubing and fins

contained therein, air-handling units consisting of coils, blowers and filters, condensing units consisting of coils, fans and compressors, which, with the

addition of a refrigerant-to-water heat exchanger, become chillers, and make-up air units and heat recovery units.

With regard to its standardized products, the Company currently has five groups of rooftop units: its HB Series consisting of four cooling sizes ranging

from two to five tons; its RM and RN Series offered in 21 cooling sizes ranging from two to 70 tons; its RL Series, which is offered in 15 cooling sizes

ranging from 40 to 230 tons; and its 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. The Company also produces customized rooftop products with direct (MN Series) and indirect (TBA

Series) heating in sizes as required.

1

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The Company manufactures a Model LL chiller, which is available in both air-cooled condensing and evaporative cooled configurations.

The Company’s products and sales strategy focus on “niche”markets. The targeted markets for its equipment are customers seeking products of better

The Company’s air-handling units consist of the H/V Series, the modular (M2) Series and a customized NJ Series.

The Company’s condensing units consist of the CB and CL series configurations.

quality than offered, and/or options not offered, by standardized manufacturers.

To support and service its customers and the ultimate consumer, the Company provides parts availability through eight independent parts distributors

and has factory service organizations at each of its plants. Also, a number of the manufacturer representatives utilized by the Company have their own

service organizations, which, together with the Company, provide the necessary warranty work and/or normal service to customers.

The Company’s heat recovery option applicable to its RM, RN and RL units, as well as its M2 and NJ Series air handlers, respond to the U.S. Clean Air Act

mandate to increase fresh air in commercial structures. The Company’s products are designed to compete on the higher quality end of standardized

The Company’s warranty on its products is: for parts only, the earlier of one year from the date of first use or 14 months from date of shipment;

products.

compressors (if applicable), an additional four years; on gas-fired heat exchangers (if applicable), 15 years; and on stainless steel heat exchangers (if

Performance characteristics of its products range in cooling capacity from 28,000-4,320,000 BTU’s and in heating capacity from 69,000-3,990,000 BTU’s.

All of the Company's 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.

applicable), 25 years.

Research and Development
All R&D activities of the Company are company-sponsored, rather than customer-sponsored. R&D has involved the HB, RM, RN, RL, NJ,TBA and MN

(rooftop units), LL (chillers) and CB (condensing units), as well as component evaluation and refinement, development of control systems and new

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

product development. The Company incurred research and development expenses of $1,681,000 in 2005, $1,072,000 in 2004 and $837,000 in 2003.

tons of air-conditioning, which can involve multiple units.

The Company has developed and is beginning to market a residential condensing unit (CB Series).

Backlog
The Company had a current backlog as of March 1, 2006, of $48,597,000, compared to $33,184,000 at March 1, 2005. The current backlog consists of

orders considered by management to be firm and substantially all of which will be filled by August 1, 2006; however, the orders are subject to

Major Customers
The Company’s largest customer last year was Wal-Mart Stores, Inc., which accounted for less than 10% of total sales. Sales to Wal-Mart were 14% and

cancellation by the customers.

18% of total sales in 2004 and 2003, respectively. The Company has no written contract with this customer.

Working Capital Practices
Working capital practices in the industry center on inventories and accounts receivable. The Company regularly reviews its working capital with a view

In order to diversify its customer base, the Company has added to and/or upgraded its sales representation in various markets.

to maintaining the lowest level consistent with requirements of anticipated levels of operation. Its greatest needs arise during the months of July-

Sources and Availability of Raw Materials
The most important materials purchased by the Company are steel, copper and aluminum, which are obtained from domestic suppliers. The Company

November, the peak season for inventory (primarily purchased material) and accounts receivable. The Company's 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. The Company

believes that it will have sufficient funds available to meet its working capital needs for the foreseeable future. The Company expects to renew its

also purchases from other domestic manufacturers certain components, including compressors, electric motors and electrical controls used in its products.

revolving credit agreement in July 2006.

The Company endeavors to obtain the lowest possible cost in its purchases of raw materials and components, consistent with meeting specified quality

standards. The Company is not dependent upon any one source for its raw materials or the major components of its manufactured products. By having

multiple suppliers, the Company believes that it will have adequate sources of supplies to meet its manufacturing requirements for the foreseeable future.

Seasonality
Sales of the Company’s products are moderately seasonal with the peak period being July-November of each year.

The Company attempts to limit the impact of increases in raw materials and purchased component prices on its profit margins by negotiating with

each of its major suppliers on a term basis from six months to one year. However, in 2005 and 2004 cost increases in basic commodities, such as steel,

copper and aluminum, severely impacted profit margins.

Distribution
The Company employs a sales staff of 12 individuals and utilizes approximately 87 independent manufacturer representatives’ organizations having

Competition
In the standardized market, the Company competes primarily with Trane Company, a division of American Standard, Inc., Carrier Corporation, a subsidiary

of United Technologies Corporation, Lennox International, Inc., and York, a division of Johnson Controls. All of these competitors are substantially larger

and have greater resources than the Company. In the custom market, the Company competes with many larger and smaller manufacturers. The

Company competes 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, the Company often is at a competitive disadvantage

104 offices to market its products in the United States and Canada. The Company also has one international sales organization, which utilizes 12

on sales of its products because of the emphasis placed on initial cost; whereas, in the replacement market and other owner-controlled purchases, the

distributors in other countries. Sales are made directly to the contractor or end user, with shipments being made from the Company’s Tulsa, Oklahoma,

Company has a better chance of getting the business since quality and long-term cost are generally taken into account.

Longview,Texas, and 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.

2

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Employees
As of March 1, 2006, the Company had 1,335 employees and 78 temporaries, none of whom is represented by unions. Management considers its

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

relations with its employees to be good.

Patents, Trademarks, Licenses and Concessions
The Company does not consider any patents, trademarks, licenses or concessions held by it to be material to its business operations, other than patents

issued regarding its heat recovery wheel option, blower, gas-fired heat exchanger and evaporative condenser desuperheater.

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

Environmental Matters
Laws concerning the environment that affect or could affect the Company's domestic operations include, among others, the Clean Water Act, the Clean

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.

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. The Company believes that it presently complies with these laws and that future compliance will not materially adversely affect the

Company's earnings or competitive position.

We may not be able to compete favorably in the highly competitive HVAC business.
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 competi-

tive factors we face are product reliability, product performance, service and price, with the relative importance of these factors varying among our product

Available Information
The Company’s Internet web site address is http://www.aaon.com. Its annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on

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

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

products compete. Several of our competitors have greater financial and other resources than we have, allowing them to invest in more extensive research

the Company’s Internet web site as soon as reasonably practical after the Company electronically files such material with, or furnishes it to, the SEC.

and development. We may not be able to compete successfully against current and future competition and current and future competitive pressures

Item 1A. Risk Factors.

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,the founder of AAON,Inc.,has served as the President and Chief Executive Officer of the Company from inception to date. He has

The following risks and uncertainties may affect the Company’s performance and results of operations.

provided the leadership and vision for our growth. Although important responsibilities and functions have been delegated to other highly experienced and

Our business can be hurt by an 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. A 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

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

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

affect the price of our common stock.

replacement purchases, which would result 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 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

AAON’s business is subject to the risks of interruptions by problems such as computer viruses.
Despite our company’s implementation of network security measures, its services are vulnerable to computer viruses, break-ins and similar disruptions

from unauthorized tampering with its computer systems. Any such event could have a material adverse affect on our business.

Exposure to environmental liabilities could adversely affect our results of operations.
Our future profitability could be adversely affected by current or future environmental laws. We are subject to extensive and changing federal, state

supply requirements, we could experience supply interruptions or cost increases, either of which could have an adverse effect on our gross profit.

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.

4

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Item 1B. Unresolved Staff Comments.

P A R T   I I

None.

Item 2. Properties.

The plant and office facilities in Tulsa, Oklahoma, consist of a 337,000 square foot 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 563,000 square foot manufacturing/ware-

house building and a 22,000 square foot 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 NC 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. Production at this facility averaged approximately $13.9

million per month in 2005, which is 89% of the estimated capacity of the plant. Management deems this plant to be nearly ideal for the type of rooftop

products being manufactured by the Company.

Item 5. Market for Registrant's Common Equity, Related Stockholder Matters 

and Issuer Purchases of Equity Securities.

The Company's Common Stock is traded on the NASDAQ National Market under the symbol "AAON". The range of closing prices for the Company's

Common Stock during the last two years, as reported by National Association of Securities Dealers, Inc., was as follows:

Quarter Ended

March 31, 2004

June 30, 2004

September 30, 2004

December 31, 2004

March 31, 2005

June 30, 2005

September 30, 2005

December 31, 2005

High

Low

$22.40

$21.24

$19.54

$18.20

$16.46

$18.99

$19.33

$18.46 

$18.00

$18.78

$15.52

$14.16

$13.91

$16.15

$16.28

$16.22

The expansion facility is 39% (228,000 sq.ft.) utilized by the Company and 61% leased to a third party. The Company uses 22,000 sq.ft.for office space,

On February 28, 2006, there were 1,026 holders of record, and 2,507 beneficial owners, of the Company’s Common Stock.

20,000 sq.ft.for warehouse space and 80,000 sq.ft.for two production lines; an additional 106,000 square feet is utilized for sheet metal fabrication. The re-

maining 357,000 sq.ft.(presently leased) will afford the Company additional plant space for long-term growth.

Although the Company has paid no cash dividends from inception to date, on February 14, 2006, the Board of Directors voted to initiate a semi-annual

cash dividend of $0.20 per share to the holders of the outstanding Common Stock of the Company as of the close of business on June 12, 2006, the

The Company’s 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.

record date, payable on July 3, 2006.

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.

Following repurchases of approximately 12% of its outstanding Common Stock between September 1999 and September 2001,the Company announced

The Company’s operations in Burlington, Ontario, Canada, are located at 279 Sumach Drive, consisting of an 82,000 sq. ft. office/manufacturing facility

stock. Through December 31,2005,the Company had repurchased a total of 1,257,864 shares under the current program for an aggregate price of

on a 5.6 acre tract of land.

$22,034,568,or an average of $17.52 per share.On February 14,2006,the Board of Directors approved the suspension of the Company’s repurchase program.

and began its current stock repurchase program on October 17,2002,targeting repurchases of up to an additional 10% (1,325,000 shares) of its outstanding

Item 3. Legal Proceedings.

The Company is 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 its knowledge, has been threatened against the Company.

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

No matter was submitted to a vote of security holders, through solicitation of proxies or otherwise, during the period from October 1, 2005, through

December 31, 2005.

6

Repurchases during the fourth quarter of 2005 were as follows:

Issuer Purchases of Equity Securities

Period

Month #1
October 1-31, 2005

Month #2
November 1-30, 2005

Month #3
December 1-31, 2005

Total

(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

–

–

16,800

$17.24

17,200

34,000

$18.49

$17.87

–

16,800

17,200

34,000

7

101,136

84,336

67,136

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Item 6. Selected Financial Data.

Item 7. Management’s Discussion and Analysis of 

Financial Condition and Results of Operations.

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.

AAON engineers, manufactures and markets air-conditioning and heating equipment consisting of standardized and custom rooftop units, chillers, air-

Results of Operations:

2005

2004

2003

2002

2001

(in thousands, except per share data)

Year Ended December 31,

Net sales

Net income

Basic earnings per share

Diluted earnings per share

Weighted average shares outstanding:

Basic

Diluted

$185,195

$ 11,462

$

$

0.93

0.90

12,340

12,750

$171,885

$ 7,521

$

$

0.60

0.58

12,435

12,923

$154,141

$ 14,611

$

$

1.11

1.06

13,158

13,740

$ 156,485

$ 14,156

$

$

1.09

1.04

12,992

13,641

$147,890

$ 14,227

$

$ 

1.12

1.07

12,685

13,251

December 31,

handling units, make-up units, heat recovery units, condensing units and coils.

AAON sells its products to property owners and contractors through a network of manufacturers’ representatives and its internal sales force. Demand

for the Company’s 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, the Company emphasizes 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 raw materials used in AAON’s manufacturing processes are steel, copper and aluminum. The major component costs include compressors,

electric motors and electronic controls.

Selling, general, and administrative (“SG&A”) costs include the Company’s internal sales force, warranty costs, profit sharing and administrative expense.

Warranty expense is estimated based on historical trends and other factors. The Company’s warranty on its products is: for parts only, the earlier of one

year from the date of first use or 14 months from date of shipment; compressors (if applicable), an additional four years, on gas-fired heat exchangers (if

applicable), 15 years, and on stainless steel heat exchangers (if applicable), 25 years.

The Company’s operations in Burlington, Ontario, Canada, are located at 279 Sumach Drive, consisting of an 82,000 sq. ft. office/manufacturing facility

Balance Sheet Data:

2005

2004

2003

2002

2001

on a 5.6 acre tract of land.

Total assets

Long-term debt

Stockholders’ equity

$113,606

$105,227

$102,085

$ 91,713

(in thousands)

$

59

$ 79,495

$

167

$ 71,171

–

–

$ 76,295

$

985

$ 67,428

$ 62,310

$ 50,041

The office facilities of AAON, Inc. consist of a 337,000 square foot building (322,000 sq. ft. of manufacturing/warehouse space and 15,000 sq. ft. of office

space) located at 2425 S.Yukon Avenue,Tulsa, Oklahoma (the “original facility”), and a 563,000 square foot manufacturing/warehouse building and a

22,000 square foot office building (the “expansion facility”) located across the street from the original facility at 2440 S.Yukon Avenue. The Company

utilizes 39% of the expansion facility and the remaining 61% is leased to a third party. The operations of AAON Coil Products, Inc. are conducted in a

plant/office building at 203-207 Gum Springs Road in Longview,Texas, containing 258,000 square feet (251,000 sq. ft. of manufacturing/warehouse and

7,000 sq. ft. of office space). In 2004 and 2005, AAON Coil Products purchased an additional 15 acres of land for future expansion.

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 September 28, 2001 and June 4, 2002, the Company completed three-for-two stock splits. The shares

outstanding and earnings per share disclosures have been restated to reflect the stock splits.

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Set forth below is income statement information with respect to the Company for years 2005, 2004 and 2003:

Steel, copper and aluminum are high volume materials used in the manufacturing of the Company’s products, which are obtained from domestic

Year Ended December 31

controls used in its products. The suppliers of these components are significantly affected by the rising raw material costs, as steel, copper and

suppliers. The Company also purchases from other domestic manufacturers certain components, including compressors, electric motors and electrical

Net sales

Cost of sales

Gross profit

Selling, general and administrative expenses

Income from operations

Interest expense 
Interest income
Other income, net

Income before income taxes
Income tax provision

Net income

2005

$ 185,195

149,904

35,291

17,477

17,814

(16)
67
467

18,332
6,870

2004

(in thousands)

$ 171,885

145,021

26,864

15,214

11,650

(38)
183
584

12,379
4,858

2003

$ 147,890

112,005

35,885

14,909

20,976

(21)
346
552

21,853
7,626

aluminum are used in the manufacturing of their products. The Company is also experiencing price increases from component part suppliers.

Selling, general and administrative expenses increased $2.3 million (14.9%) in 2005 compared to 2004 due primarily to an increase in professional fees,

computer consulting, internal accounting expenses, employee profit sharing and a full year of AAON Canada expenses.The AAON Canada asset

acquisition occurred May 4, 2004. SG&A increased  $305,000 (2.0%) in 2004 compared to 2003 due primarily to increases in bad debt expense.

Interest expense was $16,000, $38,000, and $21,000 in 2005, 2004 and 2003, respectively. The reduction in interest expense was due to lower average

borrowings under the revolving credit facility in 2005 compared to 2004.The reduction in interest expense in 2003 was due to lower interest rates.

Interest income was $67,000, $183,000, and $346,000 in 2005, 2004 and 2003 respectively, due to investments in short-term money markets and

certificates of deposit.

Other income was $467,000, $584,000, $552,000 in 2005, 2004 and 2003, respectively. Other income is attributable primarily to rental income from the

Company’s expansion facility.

$ 11,462

$

7,521

$ 14,227

Financial Condition and Liquidity
Net accounts receivable increased $5.4 million at December 31, 2005, compared to December 31, 2004, due to an increase in sales.

Results of Operations
Net sales increased $13.3 million in 2005 compared to 2004, and increased $24.0 million in 2004 compared to 2003. The increase in sales in 2005 was

attributable to both volume and price increases and a full year of sales from AAON Canada.The increase in sales in 2004 was primarily attributable to

Inventories increased $2.8 million at December 31, 2005, compared to December 31, 2004, due to procurement of inventory to accommodate

increased sales and increased inventory values related to higher raw material and component parts costs.

the introduction of new products, the improving outlook for the U.S. economy, and the AAON Canada acquisition, which contributed $3,250,000 (1.9%)

Prepaid expenses increased by $563,000 at December 31, 2005, compared to December 31, 2004, due to prepaid copper inventory, at 2005 pricing, for

to sales between May 4 – December 31, 2004. The increased sales were offset by computer and electrical outages that caused the closings of the Tulsa

2006 material requirements.

facility for four days, which also affected production at Longview and Canada.

Gross margins in 2005 were 19.1% compared to 15.6% in 2004 and 24.3% in 2003. Gross profit increased $8.4 million (31.4%) to $35.3 million in 2005

and timing of payments to vendors.

from $26.9 million in 2004 and decreased $9.0 million to $26.9 million from $35.9 million in 2004 compared to 2003.The increases in margins and gross

profit for 2005 were due primarily to increased volume, price increases and improved production efficiencies offset by lower gross margins by AAON

The Company generated $12.0 million, $16.2 million and $16.5 million cash from operating activities in 2005, 2004 and 2003, respectively. Operating

Canada, continuing high material costs for raw materials and component parts and increased copper costs, and higher than normal repair expenses to

cash flows in 2005 primarily consisted of $11.5 million of net income.The decrease in cash provided from operating activities in 2005 is primarily due to

moderate sheet metal down time.The decrease in margins for 2004 compared to 2003 was due to price increases in steel, copper and aluminum,

an increase in inventories and accounts receivable.The decrease in cash provided from operating activities in 2004 is due primarily to an increase in

startup costs associated with a new coil project, closings of the Tulsa facility for four days due to computer and electrical outages, which also affected

cost of sales and an increase in accounts receivable. Operating cash flows in 2003 consisted of $14.2 million of net income, $5.4 million of depreciation,

the Longview and Canada facilities, and equipment failures at the Company’s Longview,Texas, facility that prevented coil production needed by the

$(3.2) million in working capital and other changes. The decrease in 2003 is due primarily to an increase in inventories.

Tulsa facility. The Company instituted two product price increases to its customers in 2004, in an attempt to offset the increases in steel, copper and

aluminum. Due to the Company’s high backlog, orders with old pricing had to flow through the system before new orders began to reflect the new

Cash flows used in investing activities were $8.2 million, $11.7 million and $7.6 million in 2005, 2004 and 2003, respectively. Cash flows used in

pricing. The Company attempts to limit the impact of price increases on these materials by entering into cancelable fixed price contracts with its major

investing activities in 2005 were related primarily to capital expenditures of $10.1 million for additions of machinery and equipment, a manufacturing

suppliers for periods of 6-12 months. In many instances, due to significant price increases in 2004, suppliers refused to sell materials at the originally

addition and an office renovation to the Longview facility. Cash flows used in investing activities in 2004 related to capital expenditure additions

Accounts payable and accrued liabilities increased $1.5 million at December 31, 2005, compared to December 31, 2004, due to commissions payable

negotiated six-month or one year purchase order price.

totaling $17 million, reflecting primarily additions to machinery and equipment, a sheet metal facility at the Tulsa plant and renovations made to the

Company’s Tulsa manufacturing and Longview office facilities. In 2003 cash used in investing activities was comprised primarily of capital ex-

penditures totaling $7.7 million. All capital expenditures and building renovations were financed out of cash generated from operations. In 2005, the

Company invested $1 million in a certificate of deposit, which will mature in the first quarter of 2006. In 2002, the Company invested $10 million in a

certificate of deposit that matured in 2004 and an additional $3 million was invested in certificates of deposit in 2004, which matured in the first

quarter of 2005. Due to anticipated production demands, the Company expects to expend approximately $11 million in 2006 for equipment

requirements. The Company expects the cash requirements to be provided from cash flow from operations.

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Cash flows used in financing activities were $4.2 million, $9.9 million and $7.7 million in 2005, 2004 and 2003, respectively. In October 2002, the

Company’s Board of Directors authorized a stock buyback program to repurchase up to 1,325,000 shares of stock. There were 182,900 shares of stock

Critical Accounting Policies
The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to

repurchased for a total of $4.9 million and 265,100 shares of stock repurchased for a total of $5.0 million in 2005 and 2004, respectively, with 597,001

make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the

shares of stock repurchased for a total of $9.9 million in 2003. Additionally, the Company had no net borrowings/(repayments) in 2005, and had $(5.4)

date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Because these estimates and

million, and $1.8 million, in 2004 and 2003, respectively, under its revolving credit facility.

Off Balance Sheet Arrangements
The Company’s revolving credit facility (which currently extends to July 30, 2006) provides for maximum borrowings of $15.15 million. Interest on

borrowings is payable monthly at the Wall Street Journal prime rate less .5% or LIBOR plus 1.6%, at the election of the Company. The Company had no

assumptions require significant judgment, future actual results could differ from those estimates and could have a significant impact on the Company’s

results of operations, financial position and cash flows. The Company reevaluates its estimates and assumptions on a monthly basis.

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

borrowings under the revolving credit facility as of December 31, 2005. Borrowings available under the revolving credit facility at December 31, 2005

Allowance for Doubtful Accounts - The Company establishes an allowance for doubtful accounts based upon factors surrounding the credit risk of

were $14.6 million. In addition, the Company has a $600,000 Letter of Credit that expires December 31, 2006. The credit facility requires that the

specific customers, historical trends in collections and write-offs, current customer status, the age of the receivable, economic conditions and other

Company maintain certain financial ratios and, at December 31, 2005, prohibited the declaration or payments of dividends. At December 31, 2005, the

information. Aged receivables are reviewed on a monthly basis to determine if the reserve is adequate and adjusted accordingly at that time.

Company was in compliance with its financial ratio covenants and, subsequently thereto, the lender waived the restriction on payment of dividends. On

February 14, 2006, the Board of Directors voted to initiate a semi-annual cash dividend of $0.20 per share to the holders of the outstanding Common

Inventory Reserves – The Company establishes a reserve for inventories based on the change in inventory requirements due to product line changes,

Stock of the Company as of the close of business on June 12, 2006, the record date, payable on July 3, 2006. In addition, on February 14, 2006, the

the feasibility of using obsolete parts for upgraded part substitutions, the required parts needed for part supply sales, replacement parts and for

Company suspended its stock repurchase program. The Company plans to renew its revolving credit agreement in July 2006.

estimated shrinkage.

Management believes the Company’s bank revolving credit facility (or comparable financing), and projected cash flows from operations will provide

Warranty – A provision is made for estimated warranty costs at the time the product is shipped and revenue is recognized.The warranty period is: for

the necessary liquidity and capital resources to the Company for the foreseeable future. The Company’s belief that it will have the necessary liquidity

parts only, the earlier of one year from the date of first use or 14 months from date of shipment; compressors (if applicable), an additional four years; on

and capital resources is based upon its knowledge of the HVAC industry and its place in that industry, its ability to limit the growth of its business if nec-

gas-fired heat exchangers (if applicable), 15 years; and on stainless steel heat exchangers (if applicable), 25 years. Warranty expense is estimated based

essary, and its relationship with its existing bank lender. For information concerning the Company’s revolving credit facility at December 31, 2005, see

on the Company’s warranty period, historical warranty trends and associated costs, and any known identifiable warranty issue. Due to the absence of

Note 4 to the financial statements included in this report.

warranty history on new products, an additional provision may be made for such products.

Commitments and Contractual Agreements
The Company is a party to several short-term, cancelable, fixed price contracts with major suppliers for the purchase of raw material and component parts.

The Company has cancelable commitments to purchase machinery and equipment at a cost of $11.2 million.

The following table summarizes our long-term debt and other contractual agreements as of December 31, 2005:

Medical Insurance – A provision is made for medical costs associated with the Company’s 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 any known potential of significant future claims.The

plan is supplemented by employee contributions and an excess policy for claims over $100,000 each.

Historically, reserves have been within management’s expectations.

Payments Due By Period

Employees and related interpretations in accounting for stock options. Under “fixed plan”accounting in APB 25, because the exercise price of the

Stock Compensation - The Company has elected to follow Accounting Principles Board Opinion No. 25 (“APB 25”), Accounting for Stock Issued to

Long-term debt

Interest on fixed rate long-term debt

Purchase commitments

Total

Less Than 1 Year

1-3 Years

$

167

5

$ 11,200

(in thousands)

$

108

$

4

$

11,200

59

1

–

Total

$ 11,372

$

11,312

$

60

The fixed rate interest on long-term debt 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 Company’s Revolving Credit Facility.

Company's options equals the market price of the underlying stock on the date of grant, no compensation expense is recognized. The Company has

adopted pro forma disclosures of SFAS 123.

New Accounting Pronouncements
FASB (Financial Accounting Standards Board) Statement 123 (R) replaces FASB Statement No.123, Accounting for Stock-Based Compensation, and

supersedes APB Opinion No. 25, Accounting for Stock Issued to Employees. The Statement requires measurement of the cost of employee services

received in exchange for an award of equity instruments based on the grant-date fair value of the award. The compensation cost will be 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.The

Statement applies to all awards granted and any unvested awards at December 31, 2005. SFAS 123 (R) will be effective for the Company for interim

reporting beginning after December 31, 2005. The Company is currently considering which valuation model it will adopt and, therefore, has not

determined the impact future grants will have on the financial statements. Existing grants will result in compensation expenses being recorded similar

in nature to the amounts disclosed in the pro forma information in footnote 1 of the Consolidated Financial Statements.

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FASB Statement 151, “Inventory Costs”, replaces “Accounting Research Bulletin No. 43, Chapter 4, Inventory Pricing”. The Statement requires that

abnormal amounts of idle facility expense, freight, handling costs and spoilage be expensed as incurred and not included in overhead as an inventory

cost.The new statement also requires that allocation of fixed production overhead costs be based on normal capacity of the production facilities.The

Statement is effective January 1, 2006. The Company does not expect the adoption of this statement to have a material impact on its 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. The Company undertakes 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.

Item 8. Financial Statements and Supplementary Data.

The financial statements and supplementary data are included commencing at page 26.

Item 9. Changes in and Disagreements with Accountants on 

Accounting and Financial Disclosure.

The information called for by Item 304 of Regulation S-K has been previously reported in the Company’s Form 8-K dated June 25, 2004.

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, the Company’s management, under the supervision and with the participation

of the Company’s Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the design and operation of the Company’s

disclosure controls and procedures. Based on that evaluation, the Company’s Chief Executive Officer and Chief Financial Officer believe that:

•

The Company’s disclosure controls and procedures are designed to ensure that information required to be disclosed by the Company in the

reports it files under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified

The Company is subject to interest rate risk on its revolving credit facility, which bears variable interest based upon a prime or LIBOR rate. The Company

in the SEC’s rules and forms; and

had no outstanding balance as of December 31, 2005.

Foreign sales accounted for less than 4% of the Company’s sales in 2005 and the Company accepts payment for such sales in U.S. and Canadian dollars;

therefore, the Company believes it is not exposed to significant foreign currency exchange rate risk on these sales. Foreign currency transactions and

financial statements are translated in accordance with Statement of Financial Standards No. 52, Foreign Currency Translation. The Company uses the U.S.

dollar as its functional currency, except for the Company’s 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 are denominated in Canadian currency and are included in the results of operations as incurred.

Important raw materials purchased by the Company are steel, copper and aluminum, which are subject to price fluctuations. The Company attempts

to limit the impact of price increases on these materials by entering cancelable fixed price contracts with its major suppliers for periods of 6-12 months.

However, in 2005 and 2004 cost increases in basic commodities, such as steel, copper and aluminum, severely impacted profit margins.

The Company does not utilize derivative financial instruments to hedge its interest rate or raw materials price risks.

•

The Company’s 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 the Company’s man-

agement, and made known to the Company’s 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 the Company’s disclosure controls and procedures and concluded that these

controls and procedures were effective as of December 31, 2005.

(b) Management's Annual Report on Internal Control over Financial Reporting

The management of AAON, Inc. and its subsidiaries (AAON), is responsible for establishing and maintaining adequate internal control over financial

reporting. AAON’s internal control system was designed to provide reasonable assurance to the Company’s 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 its 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, 2005, the Company’s internal control over financial reporting is effective based on those criteria.

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AAON’s independent registered public accounting firm has issued an attestation report on management’s assessment of the Company’s internal

Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

control over financial reporting.

Date: March 3, 2006

(c) Report of Independent Registered Public Accounting Firm

Board of Directors and

Stockholders of AAON, Inc.

/s/ Norman H. Asbjornson

Norman H. Asbjornson

Chief Executive Officer

/s/ Kathy I. Sheffield

Kathy I. Sheffield

Chief Financial Officer

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, 2005 and 2004, and the related consolidated statements of income, stockholders’ equity and

comprehensive income, and cash flows for the years then ended and our report dated March 3, 2006 expressed an unqualified opinion on those

financial statements.

Tulsa, Oklahoma

March 3, 2006

(d) Changes in Internal Control over Financial Reporting

/s/ GRANT THORNTON LLP

We have audited management’s assessment, included in the accompanying Management’s Annual Report on Internal Control Over Financial

There have been no changes in internal control over financial reporting that occurred during the fourth quarter of 2005 that have materially affected,

Reporting, that AAON, Inc. (a Nevada Corporation) and subsidiaries (collectively, the Company) maintained effective internal control over financial

or are reasonably likely to materially affect, the Company's internal control over financial reporting.

Item 9B. Other information.

None.

reporting as of December 31, 2005, based on the 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. Our responsibility is to express an opinion on

management’s assessment and an opinion on the effectiveness of 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, evaluating management’s assessment,

testing and evaluating the design and operating effectiveness of internal control, and performing such other procedures as we considered necessary in

the circumstances. We believe that our audit provides a reasonable basis for our opinions.

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 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, management’s assessment that AAON, Inc. and subsidiaries maintained effective internal control over financial reporting as of

December 31, 2005, is fairly stated, in all material respects, based on criteria established in Internal Control-Integrated Framework issued by the

Committee of Sponsoring Organizations of the Treadway Commission (COSO). Also in our opinion, AAON, Inc. and subsidiaries maintained, in all

material respects, effective internal control over financial reporting as of December 31, 2005, based on criteria established in Internal Control-Integrated

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P A R T   I I I

Item 13. Certain Relationships and Related Transactions.

Item 10. Directors and Executive Officers of Registrant.

the Company’s 2006 Annual Meeting of Stockholders.

Incorporated by reference to the Company’s definitive Proxy Statement to be filed with the Securities and Exchange Commission in connection with

The information required by Items 401 and 405 of Regulation S-K is incorporated by reference to the Company's definitive Proxy Statement to be filed

with the Securities and Exchange Commission in connection with the Company's 2006 Annual Meeting of Stockholders.

Item 14. Principal Accountant Fees and Services.

Incorporated by reference to the Company’s definitive Proxy Statement to be filed with the Securities and Exchange Commission in connection with

the Company’s 2006 Annual Meeting of Stockholders.

Code of Ethics
The Company has adopted a code of ethics that applies to its principal executive officer, principal financial officer and principal accounting officer or

persons performing similar functions, as well as its other employees and directors. The Company undertakes to 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.

Incorporated by reference to the Company’s definitive Proxy Statement to be filed with the Securities and Exchange Commission in connection with

the Company’s 2006 Annual Meeting of Stockholders.

Item 12. Security Ownership of Certain Beneficial

Owners and Management and Related Stockholder Matters.

The information required by Item 403 of Regulation S-K is incorporated by reference to the Company’s definitive Proxy Statement to be filed with the

Securities and Exchange Commission in connection with the Company’s 2006 Annual Meeting of Stockholders.

Summary of All Existing Equity Compensation Plans
The following table sets forth information concerning the equity compensation plans of the Company as of December 31, 2005.

EQUITY COMPENSATION PLAN INFORMATION

Plan Category

Number of securities to be issued upon
exercise of outstanding options, warrants
and rights  

Weighted-average exercise 
price of outstanding options, warrants
and rights 

Number of securities remaining available
for future issuance under equity
compensation plan [excluding securities
reflected in column (a)]

Equity compensation plans approved by
security holders (1)

Equity compensation plans not approved by
security holders (2)

Total

(a)

1,113,680

–

1,113,680

(b)

$7.51

–

$7.51

(c)

180,661

–

180,661

(1) Consists of shares covered by the Company’s 1992 Stock Option Plan, as amended.

(2)

The Company does not maintain any equity compensation plans that have not been approved by the stockholders.

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(v)

(vi)

Incorporated herein by reference to exhibit to the Company’s Form 8-K dated August 3, 2005.

Incorporated by reference to exhibits to the Company’s Forms 8-K dated February 25, 1999, and August 20, 2002, and Form 8-A 

Registration Statement No. 000-18953, as amended.

(vii)

Incorporated herein by reference to exhibits to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 1991,

and to the Company's Form S-8 Registration Statement No. 33-78520, as amended.

(viii)

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

P A R T   I V

Item 15. Exhibits and Financial Statement Schedules.

(a)

Financial statements.

See Index to Consolidated Financial Statements on page 23.

(b)

Exhibits:

(3)

(A)

Articles of Incorporation (i)

(A-1) Article Amendments (ii)

(B)

Bylaws (i)

(B-1) Amendments of Bylaws (iii)

(4)

(A)

Third Restated Revolving Credit and Term Loan Agreement and related documents (iv)

(A-1)

Latest Amendment of Loan Agreement (v)

(B)

Rights Agreement dated February 19, 1999, as amended (vi)

(10)

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

(21)

List of Subsidiaries (viii)

(23.1)

Consent of Grant Thornton LLP

(23.2)

Consent of Ernst & Young LLP

(31.1)

Certification of CEO

(31.2)

Certification of CFO

(32.1)

Section 1350 Certification – CEO

(32.2)

Section 1350 Certification - CFO

__________

(i)

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

(ii)

Incorporated herein by reference to the exhibits to the Company's Annual Report on Form 10-K for the fiscal year ended December 31,

1990, and to the Company's Forms 8-K dated March 21, 1994, March 10, 1997, and March 17, 2000.

(iii)

Incorporated herein by reference to the Company's Forms 8 K dated March 10, 1997, May 27, 1998 

and February 25, 1999, or exhibits thereto.

(iv)

Incorporated by reference to exhibit to the Company’s Form 8-K dated July 30, 2004.

20

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SIGNATURES

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

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 10, 2006

By: /s/ Norman H. Asbjornson

Norman H. Asbjornson, President

Report of Independent Registered Public Accounting Firm – Ernst & Young LLP

AAON, INC.

Report of Independent Registered Public Accounting Firm – Grant Thornton LLP

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

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.

Dated: March 10, 2006

Dated: March 10, 2006

Dated: March 10, 2006

Dated: March 10, 2006

Dated: March 10, 2006

Dated: March 10, 2006

Dated: March 10, 2006

Dated: March 10, 2006

/s/ Norman H. Asbjornson

Norman H. Asbjornson

President and Director

(principal executive officer)

/s/ Kathy I. Sheffield

Kathy I. Sheffield

Treasurer

(principal financial officer

and principal accounting officer)

/s/ John B. Johnson, Jr.

John B. Johnson, Jr.

Director

/s/ Thomas E. Naugle

Thomas E. Naugle

Director

/s/ Anthony Pantaleoni

Anthony Pantaleoni

Director

/s/ Jerry E. Ryan

Jerry E. Ryan

Director

/s/ Jack E. Short

Jack E. Short

Director

/s/ Charles C. Stephenson, Jr.

Charles C. Stephenson, Jr.

Director

22

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Report of Independent Registered Public Accounting Firm

Report of Independent Registered Public Accounting Firm

Board of Directors and

Stockholders of AAON, Inc.

Stockholders

AAON, Inc.

We have audited the accompanying consolidated balance sheets of AAON, Inc. (a Nevada Corporation) and subsidiaries (collectively, the Company) as

We have audited the accompanying consolidated statements of income, stockholders’ equity and comprehensive income and cash flows of AAON, Inc.

of December 31, 2005 and 2004, and the related consolidated statements of income, stockholders’ equity and comprehensive income, and cash flows

for the year ended December 31, 2003.These financial statements are the responsibility of the Company’s management. Our responsibility is to express

for the years then ended. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion

an opinion on these financial statements based on our audit.

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

that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit

require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement.

includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the

An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes

accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation.We

assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement

believe that our audit provides a reasonable basis for our opinion.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States).Those standards require

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

AAON, Inc. for the year ended December 31, 2003, in conformity with U.S. generally accepted accounting principles.

In our opinion the financial statements referred to above present fairly, in all material respects, the consolidated results of operations and cash flows of

subsidiaries as of December 31, 2005 and 2004, and the results of their operations and their cash flows for the years then ended in conformity with

accounting principles generally accepted in the United States of America.

/s/ ERNST & YOUNG LLP

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the effectiveness of AAON,

Inc. and subsidiaries’ internal control over financial reporting as of December 31, 2005, based on criteria established in Internal Control-Integrated Frame-

work issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) and our report dated March 3, 2006, expressed an

unqualified opinion on management’s assessment of the effectiveness of AAON, Inc. and subsidiaries’ internal control over financial reporting and an

Tulsa, Oklahoma

February 6, 2004

unqualified opinion on the effectiveness of AAON, Inc. and subsidiaries’ internal control over financial reporting.

/s/ GRANT THORNTON LLP

Tulsa, Oklahoma

March 3, 2006

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A A O N ,

I n c . , a n d   S u b s i d i a r i e s

A A O N ,

I n c . , a n d   S u b s i d i a r i e s

Consolidated Balance Sheets

Consolidated Statements of Income

Assets
Current assets:

Cash and cash equivalents
Certificate of deposit
Accounts receivable, net
Inventories, net
Prepaid expenses and other
Deferred tax asset
Total current assets

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
Accrued liabilities
Total current liabilities

Long-term debt, less current maturities

Deferred tax liability 

Commitments and contingencies

Stockholders’ equity:

Preferred stock, $.001 par value, 5,000,000 shares authorized,
no shares issued
Common stock, $.004 par value, 50,000,000 shares authorized,
12,233,558 and 12,349,583 issued and outstanding at

December 31, 2005 and 2004, respectively
Accumulated other comprehensive  income
Retained earnings

Total stockholders’ equity

December 31,

2005

2004

(in thousands, except for share data)

$

837
1,000
32,487
23,708
1,041
3,877
62,950
50,581
75
$ 113,606

$

-
108
11,643
17,827
29,578

59

4,474

$

$

$

994
3,000
27,121
20,868
478
3,537
55,998
49,229
-
105,227

-
108
12,882
15,069
28,059

167

5,830

-

-

49
513
78,933
79,495

49
247
70,875
71,171

Net sales

Cost of sales

Gross profit

Selling, general and administrative expenses

Income from operations

Interest expense

Interest income

Other income, net

Income before income taxes

Income tax provision

Net income

Earnings per share:

Basic 

Diluted

Year Ending December 31,

2005

2004

2003

$

185,195

(in thousands, except per share data)
171,885
$

$

145,021

26,864

15,214

11,650

(38)

183

584

12,379

4,858

7,521

149,904

35,291

17,477

17,814

(16)

67

467

18,332

6,870

$

11,462

$

$

0.93

0.90

$

$

$

147,890

112,005

35,885

14,909

20,976

(21)

346

552

21,853

7,626

$

14,227

0.60

0.58

$

$

1.12

1.07

Weighted average shares outstanding:

Basic 

Diluted

12,340

12,750

12,435

12,923

12,685

13,251

The accompanying notes are an integral part of these statements.

Total liabilities and stockholders’ equity

$ 113,606

$

105,227

The accompanying notes are an integral part of these statements.

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A A O N ,

I n c . , a n d   S u b s i d i a r i e s

A A O N ,

I n c . , a n d   S u b s i d i a r i e s

Consolidated Statements of Stockholders’ Equity and Comprehensive Income

Consolidated Statements of Cash Flows

Common Stock

Shares

Amount

Paid-in
Capital

Accumulated
Other
Comprehensive
Income

(in thousands)
$

–

–

–

–

–

–

247

–

–

247

–

266

–

–

–

–

811

(811)

–

–

–

954

(954)

–

–

–

1507

(1507)

Retained
Earnings

Total

$

62,258

$ 62,310

14,227

–

(9,107)

67,378

7,521

–

–

(4,024)

70,875

11,462

–

–

(3,404)

14,227

811

(9,920)

67,428

7,521

247

7,768

954

(4,979)

71,171

11,462

266

11,728

1,508

(4,912)

$

–

$

513

$ 78,933

$ 79,495

Balance at December 31, 2002

13,031

$

52

$

Net income

Stock options exercised, including tax benefits

Stock repurchased and retired

Balance at December 31, 2003

Comprehensive income:

Net income

Foreign currency translation adjustment

Total comprehensive income

Stock options exercised, including tax benefits

Stock repurchased and retired

Balance at December 31, 2004

Comprehensive income:

Net income

Foreign currency translation adjustments

Total comprehensive income

Stock options exercised, including tax benefits

Stock repurchased and retired

Balance at December 31, 2005

–

86

(597)

12,520

–

–

95

(265)

12,350

–

–

162

(278)

12,234

$

The accompanying notes are an integral part of these statements.

–

–

(2)

50

–

–

–

(1)

49

–

–

1

(1)

49

28

Operating Activities

Net income
Adjustments to reconcile net income to net cash provided by operating activities:

$ 11,462

$

7,521

$

14,227

Year Ended December 31,

2005

2004

2003

(in thousands)

8,503
68
-
130
(1,696)

(5,366)
(2,840)
(563)
(1,269)
3,537
11,966

-
30
3,000
(1,000)
(75)
(10,144)
(8,189)

21,143
(21,143)
(108)
820
(4,912)
(4,200)

5,732
521
-
4
434

(4,002)
(698)
2,175
1,329
3,143
16,159

(1,778)
13
10,000
(3,000)
-
(16,976)
(11,741)

45,471
(50,827)
-
478
(4,979)
(9,857)

5,435
467
50
(28)
1,957

(714)
(5,423)
(2,054)
3,135
(583)
16,469

-
74
-
-
-
(7,700)
(7,626)

33,742
(31,952)
-
402
(9,920)
(7,728)

266
(157)
994
837

247
(5,192)
6,186
994

$

$

-
1,115
5,071
6,186

$

Depreciation
Provision for losses on accounts receivable 
Provision for excess and obsolete inventories, net 
(Gain)/Loss on disposition of assets
Deferred income taxes
Changes in assets and liabilities, net of effects of acquisition:

Accounts receivable
Inventories
Prepaid expenses and other
Accounts payable
Accrued liabilities

Net cash provided by operating activities

Investing Activities
Cash paid for acquisition
Proceeds from sale of property, plant and equipment
Proceeds from matured certificate of deposit
Investment in certificate of deposit
Notes receivable, long-term
Capital expenditures
Net cash used in investing activities

Financing Activities
Borrowings under revolving credit agreement
Payments under revolving credit agreement
Payments on long-term debt
Stock options exercised
Repurchase of stock
Net cash used in financing activities

Effects of exchange rate of cash
Net increase (decrease) in cash
Cash and cash equivalents, beginning of year
Cash and cash equivalents, end of year

The accompanying notes are an integral part of these statements.

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A A O N ,

I n c . , a n d   S u b s i d i a r i e s

1. Business, Summary of Significant Accounting Policies and Other Financial Data (continued)

Notes to Consolidated Financial Statements

December 31, 2005

Medical Insurance – A provision is made for medical costs associated with the Company’s 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 any known potential of significant future claims.The

plan is supplemented by employee contributions and an excess policy for claims over $100,000 per claim.

Actual results could differ from those estimates.

1. Business, Summary of Significant Accounting Policies and Other Financial Data

AAON, Inc. (the Company, a Nevada corporation) is engaged in the manufacture and sale of air conditioning and heating equipment consisting of

Revenue Recognition
The Company recognizes revenues from sales of products at the time of shipment. For sales initiated by independent manufacturer representatives,

standardized and custom rooftop units, chillers, air-handling units, make-up air units, heat recovery units, condensing units and coils, through its wholly-

the Company recognizes revenues net of the representatives’ commission.

owned subsidiaries, AAON, Inc. (AAON, an Oklahoma corporation), AAON Coil Products, Inc. (ACP, a Texas corporation), and AAON Canada, Inc., d/b/a Air

Wise (AAON Canada, an Ontario corporation). AAON Properties Inc., (an Ontario corporation) is the lessor of property in Burlington, Ontario, Canada, to

AAON Canada. The consolidated financial statements include the accounts of the Company and its subsidiaries, AAON, ACP, AAON Canada and AAON

Properties Inc. All significant intercompany accounts and transactions have been eliminated.

Currency
Foreign currency transactions and financial statements are translated in accordance with Statement of Financial Standards No. 52, Foreign Currency

Acquisition
On May 4, 2004, the Company (through AAON Canada, Inc.) acquired certain assets and assumed certain liabilities of Air Wise Inc. of Mississauga,

Ontario, Canada for a total cost of $1,778,000. Air Wise is engaged in the engineering, manufacturing, and sale of custom air-handling units, make-up air

units and packaged rooftop units for commercial and industrial buildings.The acquisition complemented and expanded the products the Company

manufactures and adds significant additional capabilities for future growth. The purchase was paid for by cash flow generated from operations.

Subsequent to May 4, 2004, AAON Canada Inc.’s activity is included in the Company’s results of operations for the years ended December 31, 2005 and

Translations. The Company uses the U.S. dollar as its functional currency, except for the Company’s Canadian subsidiaries, which use the Canadian

2004.

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 are denominated in Canadian currency and

The Air Wise acquisition purchase price was allocated as of May 4, 2004, as follows:

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 in the consolidated financial statements and accompanying notes.

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

Allowance for Doubtful Accounts – The Company establishes 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.

Accounts receivable
Inventory
Fixed assets
Accrued warranty liability

Total purchase price

U.S. Dollar 

(in thousands)
1,087
459
277
(45)

1,778

$

$

Inventory Reserves – The Company establishes 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

The Air Wise acquisition is not material for pro forma disclosure purposes.

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: for

parts only, the earlier of one year from the date of first use or 14 months from date of shipment; compressors (if applicable), an additional four years; on

gas-fired heat exchangers (if applicable), 15 years; and on stainless steel heat exchangers (if applicable), 25 years. Warranty expense is estimated based

on the Company’s warranty period, historical warranty trends and associated costs, and any known identifiable warranty issue. Due to the absence of

warranty history on new products, an additional provision may be made for such products.

On July 29, 2004, the Company (through AAON Properties, Inc.) purchased property in Burlington, Canada, to relocate AAON Canada Inc.The purchase

will allow the Company to enlarge and further expand its production capabilities.The purchase price totaled $1,100,000.

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1. Business, Summary of Significant Accounting Policies and Other Financial Data (continued)

1. Business, Summary of Significant Accounting Policies and Other Financial Data (continued)

Concentrations
The Company’s customers are concentrated primarily in the domestic commercial and industrial new construction and replacement markets. To date,

Inventories
Inventories are valued at the lower of cost or market. Cost is determined by the first-in, first-out (FIFO) method. The Company establishes an allowance

virtually all of the Company’s sales have been to the domestic market, with foreign sales accounting for less than 4% of revenues in 2005. At December

for excess and obsolete inventories based on product line changes, the feasibility of substituting parts and the need for supply and replacement parts.

31, 2005 and 2004, the two customers having the highest account balances represented approximately 1% and 5% respectively, of total accounts

Inventory balances at December 31, 2005 and 2004, and the related changes in the allowance for excess and obsolete inventories account for the three

receivable.

years ended December 31, 2005, are as follows:

Sales to customers representing 10% or greater of total sales consist of the following:

Wal-Mart Stores, Inc.

*Less than 10%

Year Ended December 31,
2004
14%

2003
18%

2005
*

Raw materials
Work in process
Finished goods

Less: allowance for excess and obsolete inventories
Total, net

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
The Company grants credit to its customers and performs ongoing credit evaluations. The Company generally does not require collateral or charge

interest. The Company establishes 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. Past due accounts are generally written off against the allowance for doubtful

accounts only after all collection attempts have been exhausted.

Allowance for excess and obsolete inventories:

Balance, beginning of period
Provision for excess and obsolete inventories
Adjustments to reserve
Balance, end of period

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

December 31,

2005

2004

(in thousands)

$ 18,256
1,981
3,821
24,058
(350)
$ 23,708

$ 16,397
2,305
3,216
21,918
(1,050)
$ 20,868

Year Ended December 31,

2005

2004

2003

$ 1,050
–
(700)
350

$

(in thousands)

$

$

1,050
425
(425)
1,050

$

$

1,000
250
(200)
1,050

Accounts receivable
Less: allowance for doubtful accounts
Total, net

Allowance for doubtful accounts:
Balance, beginning of period
Provision for losses on accounts receivable
Accounts receivable written off, net of recoveries
Balance, end of period

December 31,

2005

2004

(in thousands)

$ 33,172
(685)
$ 32,487

$ 27,838
(717)
$ 27,121

Year Ended December 31,

2005

2004

2003

$

$

717
68
(100)
685

(in thousands)

$

$

1,145
521
(949)
717

$

$

860
467
(182)
1,145

At December 31, 2005, the Company had prepaid $776,000 for copper, at 2005 pricing, for 2006 material requirements.This amount is included as

prepaid expenses and other in the Company’s Consolidated Balance Sheet at December 31, 2005.

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1. Business, Summary of Significant Accounting Policies and Other Financial Data (continued)

1. Business, Summary of Significant Accounting Policies and Other Financial Data (continued)

Property, Plant and Equipment
Property, plant and equipment are stated at cost. Maintenance, repairs and betterments, 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:

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

Buildings
Machinery and equipment
Furniture and fixtures

At December 31, property, plant and equipment were comprised of the following:

Years

10-30
3-15
2-5

Warranty
Commissions
Payroll
Income taxes
Workers’ compensation
Medical self-insurance
Other
Total

2005

2004

(in thousands)

$ 6,282
8,037
1,215
623
555
664
451
$ 17,827

$

6,301
5,921
1,115
309
457
933
33
$ 15,069

Land
Buildings
Machinery and equipment
Furniture and fixtures

Less: accumulated depreciation
Total, net

2005

2004

(in thousands)

$ 2,193
28,953
58,983
5,514
95,643
(45,062)
$ 50,581

$

2,082
26,805
52,540
4,819
86,246
(37,017)
$ 49,229

Impairment of Long-Lived Assets
The Company evaluates 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 2005 and 2004.

Commitments and Contractual Agreements
The Company is a party to several short-term, cancelable, fixed price contracts with major suppliers for the purchase of raw material and component parts.

The Company has cancelable commitments to purchase machinery and equipment at a cost of $11.2 million.

Warranties
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. Warranty expense was $3.6 million, $3.8 million and $3.2 million for the years ended
December 31, 2005, 2004 and 2003, respectively.

Changes in the Company’s warranty accrual during the years ended December 31, 2005, 2004 and 2003 are as follows:

Balance, beginning of the year
Warranties accrued during the year
Warranties settled during the year

2005

2004

2003

$ 6,301
3,622
(3,641)
$ 6,282

(in thousands)

$

$

6,020
3,774
(3,493)
6,301

$

$

7,220
3,160
(4,360)
6,020

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1. Business, Summary of Significant Accounting Policies and Other Financial Data (continued)

1. Business, Summary of Significant Accounting Policies and Other Financial Data (continued)

Earnings Per Share
Basic earnings per common share are computed by dividing net income by the weighted average number of shares of common stock outstanding

Stock Compensation
The Company maintains a stock option plan for key employees, directors and consultants, which is described more fully in Note 7. The Company

during the year. Diluted earnings per common share are determined based on the assumed exercise of dilutive options, as determined by applying the

accounts for the plan under the recognition and measurement principles of APB Opinion No. 25, Accounting for Stock Issued to Employees, and related

treasury stock method. For the years ended December 31, 2005, 2004 and 2003, 115,250, 72,250 and 41,250 options, respectively, were anti-dilutive.

Interpretations. No stock-based employee compensation cost is reflected in net income, as all options granted under the plan qualify for “fixed”plan

The weighted average exercise price of the anti-dilutive options was $18.85 at December 31, 2005, $19.40 at December 31, 2004 and $19.27 for

accounting and had an exercise price equal to the market value of the underlying common stock on the date of grant. The effect on net income and

December 31, 2003. The computation of basic and diluted earnings per share (“EPS”) is as follows:

earnings per share if the Company had applied the fair value recognition provisions of SFAS No. 123, Accounting for Stock-Based Compensation, to stock-

based employee compensation is as follows:

Year Ended December 31, 2005

Net Income

Weighted
Average
Shares

Per-Share
Amount

(in thousands, except per share data)

$ 11,462
–
$ 11,462

12,340
410
12,750

$

$

0.93
–
0.90

Year Ended December 31, 2004

Net Income

Weighted
Average
Shares

Per-Share
Amount

(in thousands, except per share data)

$

$

7,521
–
7,521

12,435
488
12,923

$

$

0.60
–
0.58

Year Ended December 31, 2003

Net Income

Weighted
Average
Shares

Per-Share
Amount

(in thousands, except per share data)

$ 14,227
–
$ 14,227

12,685
566
13,251

$

$

1.12
–
1.07

Basic EPS
Effect of dilutive securities
Diluted EPS

Basic EPS
Effect of dilutive securities
Diluted EPS

Basic EPS
Effect of dilutive securities
Diluted EPS

Year Ended December 31,

2005

2004

2003

(in thousands, except per share data)

Net income, as reported

$ 11,462

$

7,521

$

14,227

Deduct: Total stock-based employee compensation expense 

determined under fair value method for all awards, net of 

related tax effects

Pro forma net income

Earnings per share:

Basic, as reported

Basic, pro forma

Diluted, as reported

Diluted, pro forma

(438)

$ 11,024

$

$

$

$

0.93

0.89

0.90

0.86

(298)

7,223

0.60

0.58

0.58

0.56

$

$

$

$

$

(611)

13,616

1.12

1.07

1.07

1.03

$

$

$

$

$

Advertising
Advertising costs are expensed as incurred. Advertising expense was $506,000, $615,000 and $781,000 for the years ending December 31, 2005, 2004

and 2003, respectively.

Research and Development
Research and development costs are expensed as incurred. Research and development expense was $1,681,000, $1,072,000 and $837,000 for the years

ending December 31, 2005, 2004 and 2003, respectively.

Shipping and Handling
The Company incurs 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.

36

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1. Business, Summary of Significant Accounting Policies and Other Financial Data (continued)

5. Debt

New Accounting Pronouncements
FASB (Financial Accounting Standards Board) Statement 123 (R) replaces FASB Statement No.123, Accounting for Stock-Based Compensation, and

supersedes APB Opinion No. 25, Accounting for Stock Issued to Employees. The Statement requires measurement of the cost of employee services

Long-term debt at December 31, 2005, consisted of notes payable totaling $59,000 due in 2007, net of $108,000 current liability, which were due in

monthly installments of $9,004, with an interest rate of 3.53%, related to a computer capital lease.

received in exchange for an award of equity instruments based on the grant-date fair value of the award. The compensation cost will be recognized

6. Income Taxes

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.The

Statement applies to all awards granted and any unvested awards at December 31, 2005. SFAS 123 (R) will be effective for the Company for interim

reporting beginning after December 31, 2005. The Company is considering which valuation model it will adopt and, therefore, has not determined the

impact future grants will have on the financial statements. Existing grants will result in compensation expenses being recorded similar in nature to the

amounts disclosed in the pro forma information in footnote 1.

The Company follows 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:

FASB Statement 151,“Inventory Costs”, replaces “Accounting Research Bulletin No.43,Chapter 4,Inventory Pricing”.The Statement requires that abnormal amounts

of idle facility expense,freight,handling costs and spoilage should be expensed as incurred and not included in overhead as an inventory cost.The new

statement also requires that allocation of fixed production overhead costs should be based on normal capacity of the production facilities.The Statement is

effective January 1,2006. The Company does not expect the adoption of this statement to have a material impact on its Consolidated Financial Statements.

Current

Deferred

Year Ended December 31,

2005

2004

$

$

8,566 

(1,696)

6,870

(in thousands)
4,424

434

4,858

$

$

2003

5,669

1,957

7,626

$

$

Segments
The Company operates under one reportable segment as defined in SFAS 131, Disclosures about Segments of an Enterprise and Related Information.

Reclassifications
Income Statement reclassifications were made for years ended December 31, 2004 and 2003, to conform to the 2005 presentation.The reclassifications

had no affect on Net Income.

2. Supplemental Cash Flow Information

Interest payments of $16,000, $38,000 and $21,000 were made during the years ending December 31, 2005, 2004 and 2003, respectively. Payments for

income taxes of $7,189,000, $3,977,000 and $6,750,000 were made during the years ending December 31, 2005, 2004 and 2003, respectively.

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

Year Ended December 31,

2005

35%

4%

(2%)

37%

2004

35%

5%

(1%)

39%

2003

35%

4%

(4%)

35%

3. Certificate of Deposit

The tax effect of temporary differences giving rise to the Company’s deferred income taxes at December 31 is as follows:

At December 31, 2005, the Company had invested $1 million in a 30-day certificate of deposit that bears interest at 4% per annum. On June 12, 2004,

the Company had a $10 million certificate of deposit that matured bearing interest at 3.25% per annum. Proceeds of $7 million were used for cash flow

purposes and a reinvestment of $3 million, and various amounts throughout the remainder of the year, were invested in 30-day certificate of deposits.

At December 31, 2004, the Company had invested $3 million in a 30-day certificate of deposit bearing interest at 1.9% annum.

4. Revolving Credit Facility

The Company has a $15,150,000 unsecured bank line of credit that matures July 30, 2006. The line of credit requires that the Company maintain certain

financial ratios and prohibits the declaration or payments of dividends. At December 31, 2005, the Company was in compliance with its financial ratio

covenants. On February 14, 2006, the Board of Directors voted to initiate a semi-annual cash dividend of $0.20 per share to the holders of the

outstanding Common Stock of the Company as of the close of business on June 12, 2006, the record date, payable on July 3, 2006.The restriction of

payments of dividends has been waived by the lender. Borrowings under the credit facility bear interest at prime rate less 0.5% or at LIBOR plus 1.60%.

At December 31, 2005, the Company had no borrowings under the revolving credit facility. Borrowings available under the revolving credit facility at

December 31, 2005 and 2004 were $14.6 million. In addition, the Company had a $600,000 bank Letter of Credit at December 31, 2005 and 2004, and

the December 31, 2005, bank letter of credit will expire December 31, 2006. The Company plans to renew its revolving credit agreement in July 2006.

Deferred current tax assets and liabilities relating to:

Valuation reserves

Warranty accrual

Depreciation

Other accruals

Other, net

Deferred long-term tax assets and liabilities relating to:

Depreciation and amortization

NOL

Other, net

2005

2004

2003

(in thousands)

$

$

$

391

2,284

3

1,170

29

3,877

5,030

(695)

139

$

$

$

670

2,283

-

553

31

3,537

5,830

–

$

$

$

900

2,342

-

253

37

3,532

5,391

–

$

4,474

$

5,830

$

5,391

38

39

The NOL Deferred Tax Asset relates to AAON Canada and expires in ten years.

AAON 10K  4/12/06  10:46 AM  Page 40

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7. Benefit Plans

7. Benefit Plans (continued)

The Company’s stock option plan provided for 2,925,000 shares of common stock to be issued under the plan. Under the terms of the plan, the

For purposes of the stock compensation information presented in Note 1, the fair value of each option grant is estimated on the date of grant using 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

Black-Scholes option pricing model with the following weighted average assumptions:

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 after 1-3 years. 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. At December 31, 2005, 180,661 shares were available for future option grants. For the years ended December 31, 2005 and 2004, the

Company reduced its income tax payable by $750,000 and $476,000, respectively, as a result of nonqualified stock options exercised under the

Company’s stock option plan. The number and exercise price of options granted were as follows:

Expected dividend yield
Expected volatility
Risk-free interest rate
Expected life

2005

0%
32.15%
4.39%
8 yrs

2004

0%
36.70%
4.24%
8 yrs

2003

0%
37.80%
3.73%
8 yrs

Outstanding at December 31, 2002

Granted
Exercised
Cancelled

Outstanding at December 31, 2003

Granted
Exercised
Cancelled

Outstanding at December 31, 2004

Granted
Exercised
Cancelled

Outstanding at December 31, 2005

Number
Of Shares

1,277,543
56,250
(85,818)
(20,645)
1,227,330
31,000
(94,950)
(3,600)
1,159,780
133,000
(162,400)
(16,700)
1,113,680

Weighted Average Exercise
Price Per Share

$

$

$

$

5.33
13.53
4.69
8.71
5.70
19.58
4.99
5.78
6.13
16.63
5.05
8.37
7.51

The weighted-average grant date fair value for options granted during 2005, 2004, and 2003 was $7.72, $9.84 and $6.47, respectively.

The following is a summary of stock options outstanding as of December 31, 2005:

The Company sponsors a defined contribution benefit plan. Employees may make contributions at a minimum of 1% and a maximum of 50% of

compensation. The Company may, on a discretionary basis, contribute a Company matching contribution of 100% of the salary deferral up to 3%. After

January 1, 2006, the Company matching increased to 50% of the salary deferral up to the first 7% of compensation. In addition, effective May 30, 2005,

the Plan was amended to provide for automatic enrollment in the Plan and provided for an automatic increase to the deferral percent at January 1st of

each year and each year thereafter, unless the employee elects to decline the automatic increase. Beginning with pay periods after May 30, 2005, the

one year enrollment waiting period was waived.The Company made matching contributions of $700,000, $546,000 and $585,000 in 2005, 2004 and

2003, respectively.

The Company maintains 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. Profit sharing expense was $2,075,000, $1,408,000 and $2,428,000 for the years ended December 31, 2005, 2004 and 2003,

respectively.

8. 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 the Company’s 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 the Company’s common stock. The rights become exercisable after a person has acquired, or a tender offer is

made for, 15% or more of the common stock of the Company. 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 the Company’s common stock having a market value equal to two times

Options Outstanding

Options Exercisable

the exercise price.

Range of
Exercise Prices

Number
Outstanding at
December 31, 2005

Weighted
Average
Exercise Price

Weighted
Average
Remaining
Contractual Life

Number
Exercisable at
December 31, 2005

Weighted
Average
Exercise Price

2.28 – 3.39
4.00 – 5.78
8.44 – 12.36
13.40 – 16.94
17.10 – 20.40
Total

403,375
350,305
96,750
148,000
115,250
1,113,680

$

$

3.00
5.07
9.55
15.47
18.74
7.51

1.18
3.30
5.25
8.21
7.90

403,375
350,305
79,650
32,400
50,530
916,260

$

$

3.00
5.07
9.56
14.18
19.33
5.66

The rights may be redeemed by the Company for $0.001 per right until a person or group has acquired 15% of the Company’s common stock. The

rights expire on August 20, 2012.

9. Contingencies

The Company is subject to claims and legal actions that arise in the ordinary course of business. Management believes that the ultimate liability, if any,

will not have a material effect on the Company’s results of operations or financial position.

10. Subsequent Events

On February 14, 2006, the Board of Directors voted to initiate a semi-annual cash dividend of $0.20 per share to the holders of the outstanding

common stock of the Company as of the close of business on June 12, 2006, the record date, payable on July 3, 2006. As of December 31, 2005, the

Company’s revolving credit facility prohibited payment of dividends.The restriction has since been waived.

The Board also approved the suspension of the Company’s current stock repurchase program (for 1,325,000 shares), on which a balance of 67,136

shares remains to be bought.

40

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11. Quarterly Results (Unaudited)

Exhibit 23.1

The following is a summary of the quarterly results of operations for the years ending December 31, 2005 and 2004:

Quarter Ended

Consent Of Independent Registered Public Accounting Firm

We have issued our reports dated March 3, 2006 accompanying the consolidated financial statements and management's assessment of the

effectiveness of internal control over financial reporting included in the Annual Report of AAON, Inc. on Form 10-K for the year ended December 31,

2005. We hereby consent to the incorporation by reference of said reports in the Registration Statement (Post-Effective Amendment No. 2 to Form S-8

March 31

June 30

September 30

December 31

(File No. 33-78520)) of AAON, Inc.

2005
Net sales
Gross profit
Net income
Earnings per share:

Basic
Diluted

(in thousands, except per share data)

$ 45,394
8,372
3,125

0.25 
0.24

$

48,136
8,643
2,766

0.22
0.22

$ 48,885
8,226
2,284

0.19
0.18

$ 42,780
10,050
3,287

0.27
0.26

Tulsa, Oklahoma

March 9, 2006

/s/ GRANT THORNTON LLP

Quarter Ended

March 31

June 30

September 30

December 31

(in thousands, except per share data)

$ 37,200
7,593
2,337

0.19
0.18

$ 42,662
6,161
1,571

0.13
0.12

$

47,387
5,962
1,527

0.12
0.12

$

44,636
7,148
2,086

0.17
0.16

2004
Net sales
Gross profit
Net income
Earnings per share:

Basic
Diluted

42

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Exhibit 23.2

Consent Of Independent Registered Public Accounting Firm

Exhibit 31.1

Certification

We consent to the incorporation by reference in the Registration Statement (Post-Effective Amendment No. 2 to Form S-8 No. 33-78520) pertaining to

I, Norman H. Asbjornson, certify that:

the AAON, Inc. 1992 Stock Option Plan, as amended, of our report dated February 6, 2004, with respect to the consolidated financial statements of

AAON, Inc. included in the Annual Report (Form 10-K) for the year ended December 31, 2005

1.

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

/s/ ERNST & YOUNG LLP

2. 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;

Tulsa, Oklahoma

March 9, 2006

3. 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:

a) 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 its consolidated subsidiaries, is made known to us by

others within those entities, particularly during the period in which this report is being prepared;

b) 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;

c) 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

d) 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):

a) 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

b) 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 9, 2006

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

44

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Exhibit 31.2

Certification

I, Kathy I. Sheffield, certify that:

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

1.

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

2. 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

and Exchange Commission on the date hereof (the “Report”), I, Norman H. Asbjornson, Chief Executive Officer of the Company, certify, pursuant to 18

make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the

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, 2005, as filed with the Securities

period covered by this report;

3. 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;

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

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

Company.

March 9, 2006

/s/ Norman H. Asbjornson

Norman H. Asbjornson

Chief Executive Officer

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) 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 its consolidated subsidiaries, is made known to us by

others within those entities, particularly during the period in which this report is being prepared;

b) 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;

c) 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

d) 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):

a) 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

b) 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 9, 2006

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

46

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Exhibit 32.2

OFFICERS

Certification Pursuant To
18 U.S.C. Section 1350,
As Adopted Pursuant To
Section 906 Of The Sarbanes-Oxley Act Of 2002

In connection with the Annual Report of AAON, Inc. (the “Company”), on Form 10-K for the year ended December 31, 2005, as filed with the Securities

and Exchange Commission on the date hereof (the “Report”), I, Kathy I. Sheffield, Chief Financial 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

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

Company.

March 9, 2006

48

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 38 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,
Dornblaser, Coffman &
Shorb, which serves as
General Counsel 
to 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 36 years, holding
positions in design, research,
software development,
engineering, teaching, sales,
and senior management.

CORPORATE DATA

Transfer Agent and Registrar 
Progressive Transfer Company
1981 East Murray-Holladay Road, Suite 200
Salt Lake City, Utah 84117

/s/ Kathy I. Sheffield

Kathy I. Sheffield

Chief Financial Officer

BOARD OF DIRECTORS

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.

Anthony Pantaleoni has served as a
director of the Company since 1989. Mr.
Pantaleoni is of counsel to Fulbright &
Jaworski LLP in New York, New York.

Norman H. Asbjornson
President / CEO

Jerry E. Ryan was elected
as a director by the Board
in 2001. Mr. Ryan serves on
the Boards of Directors of
Lone Star Technologies of
Dallas, Texas and Global
Energy Equipment Group,
Tulsa, Oklahoma.

Thomas E. Naugle has
served as a director of the
Company since 1998.
From 1985 to present, Mr.
Naugle has served as
Chairman of the Board
and/or President of
Naugle & Co., a company
engaged in the business
of investments.

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.

Auditors
Grant Thornton LLP
2431 East 61st Street, Suite 500
Tulsa, OK 74136

General Counsel
Johnson, Jones, Dornblaser,

Coffman & Shorb

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

Website Address
www.aaon.com

AON 06012 AR Back End  4/12/06  10:50 AM  Page 2

t h a n k s   t o   o u r   e m p l o y e e s

MATHEW ABBOTT

GARY  ARNOLD

ANDRES BENITEZ

REZKAR ABDULMAJEED

NORMAN ASBJORNSON

GUZMAN BENITEZ

SHARRON ABERCROMBIE

SCOTT ASBJORNSON

DESHAUN ABRON

MARIA ACOSTA

MARTHA ACOSTA

BRENT ADAMS

GARY ADAMS

RODNEY ADAMS

ISAAC ADERINBOYE

RITA ADIMARI

KEVIN ADKINS

GARY ASHMORE

DWIGHT AUSTIN

IVAN AVALOS

JOSEPH AVILA

JUAN AYALA

MIGUEL AYALA

KELLY BABINEAU

NORA BACKUS

JASWINDER BADESHA

ROSHANLA AHLUWALIA

TIMOTHY BAEHLER

WILLIAM BAGLEY

JAHANGIA BAHRAMI

LAMARCUS BAILEY

NOEL BAILEY

MATTHEW BAKER

MARIA BENITEZ

OFELIA BENITEZ

ERIC BENNETT

BONNIE BENSON

JERRY BENSON

VICKIE BERRY

HUGO BERUNEN

SERGIO BESERRA

ALLEN BEVIS

BRANDON BILL

BILL BINNIE

THOMAS BIRD

JAMES BIRRELL

JAMES BLACK

JASON BLACK

KEVIN BLACKBOROW

KOHULAN BALASUBRAMANIAM

BENJAMIN BLACKWELL

STEPHEN BALLARD

LUIS BANUELOS

CAROLYN BARBER

RAY BARBER

CANDY BARBOSA

JUSTIN BARLETT

KIONTE BARNES

DARREL BARNETT

DAVID BARNETT

HENRY BARRIOS

ELIA BARRON

ESTHER BARRON

MARIA BLANCO

MANUEL BLANQUET

DAVID BLEVINS

JIMMY BLEVINS

JUSTIN BLEVINS

GENE BOESE

EDGAR BOJ

TERRY BOLER

JAMES BOND

ELI BOTELLO

ROSENDO BOTELLO

DEMETRIUS BOYD

ATEF AHMED

DANIEL ALAGDON

IMELDA ALBA

JULIO ALBINO

AARON ALEXANDER

BRYAN ALEXANDER

DANIEL ALEXANDER

JAMES ALEXANDER

BRENDAN ALLEN

DONALD ALLEN

HEATH ALLEN

JAMES ALLEN

KEVIN ALLEN

MICHAEL ALLEN

JASON ALLISON

RAFAEL ALONZO

TARIK ALSAADI

FELIPE ALVARADO

PHILLIP BRUCE

MACEO BRUMLEY

RICHARD BRUNET

NANCY BRYAN

CHRISTOPHER BRYANT

MACEDONIO CARRILLO-RUIZ

ALEJANDRO CARTAGENA

JAMES CARTER

KAREN CARTER

RAY CARTER

WILLIAM BRYANT

LEON CARTWRIGHT

SEAN BRYE

BANG BUI

BICH BUI

OSMAN BULSHO

ROBERT BURCH

MICHAEL BURGESS

JACOB CASON

JOSE CASTANEDA-PAREJA

JOSE CASTRO M

ELVIS CERDA

MARIA CERDA

ADAM CHAFE

ESPERANZA BURNETT

MARK CHALMERS

MONICA BURNS

CHARLES BURRIS

SHANNON BURTCH

DOUGLAS BURTRUM

TINA  BUSH

JOE BUSH

TRACY CHAMBLISS

PATRICK CHAPMAN

SERGIO CHARLES

JOSH CHATTILLON

JEANNIE CHAU

ADALBERTO CHAVEZ

JOSE BUSTOS-VERGARA

FRANCISCO CHAVEZ

JOHN BUTLER

TYRONE BUTLER

BRUCE BUTLER

GREGORY CHAVEZ

DALE CHERRY

DANIEL CHERRY

FRANCISCO CABRERA

KRISTEN CHEVALLIER

DORA CADENA

DANIEL CAEZ

ADAN CHICAS

JUAN CHIQUILLO

MARTHA CALDERAS-MOSQUEDA

WILLIAM CHRISTOPHER

MARGARITO CALDERON

WILLIAM CALDWELL

LUKE CALVERT

LAZARO CAMA

GEORGE CLARK

MORRIS CLARK

PETER CLARK

JOHN CLARK

MARIO ALVARADO-OROZCO

MANUEL BARTHOLIC

JOHN BOYD

JOSE CAMAS-PADILLA

FLOYD CLEGHORN

ELEAZAR ALVAREZ

GUSTAVO ALVAREZ

ANDREW BASS

MICHAEL BASS

BRET BRADFORD

BRIAN BRADFORD

CARLOS ALVAREZ-VELAZQUEZ

ANGELA BASTIDOS

MYOSHIA BRADLEY

FRED BRAGA

MARCO CAMILLO-LOZANO

WILLIAM CLEVELAND

NATHAN CAMPBELL

DAVID CAMPBELL

ARTHUR CANDLER

STEVEN COATNEY

VERNETT COBB

KENNETH COCHRAN

ARNOLDO AMAYA

MICHAEL AMBURGEY

CYNTHIA AMENT

JEHAD AMIREH

EMILO ANDALON

FERNANDO ANDALON

JUSTIN BATEMAN

RICARDO BATISTA

ELLIOTT BAYHYLLE

JASON BAZAN

BESSIE BEASLEY

ELBERT BEASLEY

GLEN BRAUER, JR.

RAYNOR BRENTON

MITCHELL BROOKS

DAVID BROWN

ADAM CAPRI

REFUGIO CARACHURE

KUMSAI COLE

MICKEY COLE

JORGE CARCAMO

LATOYA COLEMAN

FAUSTINO CARDENAS

BARBARA COLEMAN

GERRY DAVIS

JERRY DAVIS

RICHARD DAVIS

WILLIAM DAVIS

ANGELA DAVIS

CAROLYN DAVIS

JOHNNY DAVIS

OTILIA DE JONES

BUDDY DUNN

ISAAC DUNPHY

JASON DUNPHY

VICTOR DURAN

RALPH DURBIN

RANDY DWIGGINS

JERRY EARLEY, JR.

WENDELL EASILEY

FELIPE DE LA TORRE

OWEN ECHO HAWK

ANDRES DE LEON, JR.

GARY EDWARDS

GWENDOLYN DECKARD

RICKEY EDWARDS

TROY DEERINWATER

MICHAEL EGAN

BOBBY DEGRAFFENREID

WILLIAM EKLUND

AMBER DELANCY

ISMAEL DELAPAZ

EVA DELATORRE

ALVARO DELEON

BETTY  ELI

EARL ELLIOTT

HARVEY ELLIS

TINISHA ENGLISH

ALVARO DELEON MEDOZA

STEPHEN ENSMINGER

DONALDO CONTRERAS

MARK COOK

ROBERT COOK

WILLIAM COOK

MICHAEL COOLIDGE

DONNA COONFIELD

JAMES COOPER

ELAINE CORKHILL

ALBERTO CORONA

BLANCA CORONA

HERON CORONA

IGNACIO CORONA

ROBERTO CORONA

EDUARDO CORTEZ

ROSA CORTEZ

SHANA COUGHRAN

BILLY COX

CHRISTINE COX

JERRY COX

JOHN COX

JOSEPH COX

PATRICK COX

ADRIAN CRABTREE

RICHARD CRAITE

STEVEN CRASE

KERMIT CRAWFORD

EVERETT CRAWFORD

MIKEL CREWS

CLARK CROSBY, JR.

DARRELL CROW

LUIS DELGADO

JUANA DELOBO

RODRIGO DELUNA

RAQUEL DELUNA

JATINDER DEOL

SURJIT DEOL

EUFEMIO DEPAZ

AUDENCIA DEVILLA

CHARLES DEWEESE

CARL DIKA

HOMER DODD

CAROLYN CRUTCHFIELD

RICKEY DODSON

VICTORY CULLOM II

ROBERT CUMMINGS

JAMES CURLEY

GENE CURTIS

KELLY CUTTING

WILBER DOMINGUEZ

MARTIN DOMINGUEZ

SEAN DONALD

RODNEY DORSEY

MATTHEW DOSS

NICK DABIJA

CHANH DANG

LIEN DANG

GWENDOLYN DANIELS

JOHN DANIELS

ERIC DOWNING

WAYNE DOYLE

EMIL DRAGNEV

CLAUDIA DUARTE

CATHRYN DUBBS

ALEJO ESCALERA

ALEJO ESCALERA

JOSE ESCOBEDO

JOSE ESPINOSA

EARL ESTEP

STEPHEN ETTER

BARRON EUBANKS

GREGORY EUBANKS

ARNOLD EUDY

OTIS EVANS

SHAWN FAIRLEY

JORGE FELICIANO

JOSE FELICIANO

JOSE FELIX-GALVAN

ROBERT FERGUS

FABIOLA FERNANDEZ

RICARDO FERNANDEZ

PEDRO FERNANDEZ

NICK FERRARO

MARIA FERRER

GERALD FIELDS

FRANCISCO FIERRO

ANDREW FINCH

STERLYN FINCH

BRUCE FISHER

LACRETIA FISHER

TIFFANY FITZPATRICK

ANTHONY FIZER

WAYNE FLASKA

TERRA FLETCHER

MIGUEL GARCIA-SUAREZ

JOHNNY  GARDNER, JR.

NORMA GARIBAY

CARLOS GARZA

RALPH GASAWAY

MIKE GATELEY

COPOTENIA FLETCHER, JR

MATT GAUNTLETT

BERTHA FLORES

EFIGENIA FLORES

JOSE FLORES

ZENAYDA FLORES

CAROLINA FLORES

JUANA FLORES

LAURA FLORES

CECILE FLOYD

RUBY FLOYD

VICKY FLOYD

RUDY FOGLE

STEVE GEARY

JAMES GEORGE

DEANGELO GIBBS

AMRIK GILL

JORAWAR GILL

SATINDER GILL

DERRICK GILLIS

JASON GILMORE

GREG GLAZIER

BRAD GOBER

EMMETT GOINS

KENNETH FONTENOT

ALPHONSO GOLDEN

SHARON FONTENOT

HENRY GOLDSTON

SHEILA FORREST

CHRISTOPHER FOSTER

FREDERICK FOSTER

JOSEPH FOWLER

LORETTA FOWLKES

KENNETH FOYIL

JUAN FRANCO

PHILLIP FRANK

WARREN FRANKLIN

REVONDA FRANKS

KIMBERLY FRAZIER

GARY FREDERIKSEN JR

OLGA FRENCH

ELBERT FULLER

RICKY GAFFNEY  II

RANULFO GALICIA

BRENDA GALINDO

YOLANDA GALVAN

ANGEL GARCIA

MAXIMO GARCIA

NICKLAUS GARCIA

WILSON GARCIA

ALEJANDRO GARCIA

J. GARCIA-GONZALEZ

LARRY GOLETTO

HECTOR GOMEZ

JORGE GOMEZ

MOISES GOMEZ

FAUSTINO GOMEZ

HUMBERTO GOMEZ

MARIA GOMEZ

JESUS GOMEZ, II

JUAN GOMEZ-OLMOS

CHRISTOPHER GONZALES

ADRIAN GONZALEZ

ELIO GONZALEZ

JOHN GONZALEZ

MARIA GONZALEZ

MARIA G. GONZALEZ

MARISELA GONZALEZ

MARTIN GONZALEZ

NICHOLAS GONZALEZ

MANUEL GONZALEZ

VICTOR GONZALEZ

REYNALDO GONZALEZ-

RODRIQUEZ

TOMMIE GOODIN

BARRY GOODSON

PERRY GORDON

ADRIAN GORE

JESUS ESTRADA-GONZALEZ

WILFRED FOURNIER

VICENTE DEPAZ-MEDINA

GILDA ETUMUDOR

CHRISTOPHER BRANTLEY

ARTHUR CANDLER, III

JACQUELINE COFFEY

BOGDAN CZEMIAWSKI

HAROLD DOUGLAS

DAVID FERNANDEZ

ELIZABETH FERGUSON

RONY GADIWALLA

LETICIA ANDALON

ROBERT BEAUCHAMP

DEWAYNE BROWN

FERNANDO CARDENAS

RONALD COLLINS

CHARLES ANDERSON, JR.

DAMARCO BECK

KENYA ANJORIN

ALFREDO ANTONIO

JAVIER ARANDA

SHANNON BECK

MARK BEHN

TORREY BELCHER

JOSHUA BROWN

PAUL BROWN

RONALD BROWN

JAMES BRUCE

MARIA CARDENAS

JERRY COMLEY

ALEKSEY DANIL'CHENKO

JERROLD DUBBS

MARIA G. CARDENAS

KATHLEEN COMPTON

ANTHONY CARMONA

DALE CONKWRIGHT

CARL CARPENTER

JOSEPH CONLEY

ANDY DANSBY

LORETTA DARLING

CATARINO DAVILA

BRIAN DUCKETT

CRAIG DUKE

LINDA DUNEC

    
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DEWAYNE HIGHTOWER

MAURICE JACKSON

FERNANDO JUAREZ

ERNESTO GRANADOS

DANIEL HENDERSON

DAVID HOWARD

BUENAS GRANADOS

DEMETRIUS HENDERSON

CLARENCE HUBBELL

ZAINAB GRAVES

DERRICK GREEN

DAPHINE GREEN

JESSE GREEN, JR.

KELLI GREER

JAMES GREGG

ARACELI GRIEGO

KENNETH GRIFFITH

RONALD GRIMES

DANIEL GROFF

ALVIN GUAJARDO

JOSH GUITAR

MIKE HENSLEY

LYDIA HUDSON

ARMANDO HERNANDEZ

LARRY HUFFMAN

BENJAMIN HERNANDEZ

CORCINA HERNANDEZ

BILLY HUGHART

JIMMY HUGHES

EDUARDO HERNANDEZ

ROBB HULLER

JOSE HERNANDEZ

LUIS HERNANDEZ

MARIA HERNANDEZ

MAYTE HERNANDEZ

BRADLEY HUNT

BRENDA HURTADO

GARY HUTCHINS

GARY HUTCHINSON

FRANCISCO HERNANDEZ

SAMUEL INGRAM

FRANCISCO O. HERNANDEZ

ANTHONY INKTON

MARIANO HERNANDEZ

FIRDOUS IRANI

AURELIO GURRUSQUIETA

FRANCISCO HERRA, JR.

TIM IRWIN

REMIA GUTHERY

MANUEL GUTIEREZ

ERBEY GUTIERREZ

ISAAC GUTIERREZ

MARCOS HERRERA

DONALD HICKMAN

CLINTON HICKS

TAKEO HIGA

RAQUEL GUTIERREZ

BRENDA HIGGINS

MELHAM JABR

DONALD JACKSON

JEFF JACKSON

BELINDA JACKSON

GEORGE JACKSON

NANCY HACKNEY

TERRY HAIR

EDMUND HALE, SR.

JACK HALL

KELLY HALL

STEPHEN HALL

ROBERT  HALTON

SCOTT HAMILTON

OTIS  HAMILTON

JEFFREY HAMMER

SAM HAMMOUD

RODERICK HARBIN

DONALD HARDEN

HYLAND HARGER

MARQUIS HARLIN

KENNY HARRIS

STACEY HARRIS

HEATHER HASKINS

DONALD HATLEY

JOHN HAWLEY, JR.

WILLIE HAYES

JOE HAYS

RICKEY HAZLETT

THEODORE HEATH

TIM HEFFLIN

PAUL HILL

RONALD HILL

JULIAN HILL JR

BRAD HINDMAN

JUAN HINOJOSA

TYSON HINTHER

CLYDE HITCHYE

ROBERT HITCHYE

SANDRA HOFFMAN

MELIKA JACKSON

MAVIS JACKSON, JR.

DANNY JACOT

TIMOTHY JAHR

JOSE JAMAICA

MCKINLEY JAMES

STEVEN JAMES

TAKETHA JAMES

PHILIP JENKINS

JAMES HOLLINGSWORTH

JUSTINE JENKINS

JASON JEWELL

GENELLE JIMBOY

ALEJANDRO JIMENEZ

ANA JIMENEZ

J. ROSARIO JIMENEZ

JAVIER JIMENEZ

JOSE JIMENEZ

RAMIRO JIMENEZ

LORETTA HOLLINS

DONNA HOLLOWAY

LAWRENCE HONEL

LOUIS HOOVER

STEPHEN HOOVER

SAMANTHA HOPKINS

CHRISTOPHER HORAK

TERRI HORN

DANIEL HORRELL

JOSHUA HORST

STANLEY HORTON

JERRY HOUSTON

LARRY HOWARD

ED JOHNSON

JASON JOHNSON

JUSTIN JOHNSON

LEROY JOHNSON

REX JOHNSON

RICHARD JOHNSON

TERRY JOHNSON

ANATOLI KONOVALCHUK

JAMES KOSS

DANIEL KRAFT

KRISTIN KRAFT

MIKHAIL KRUPENYA

EDWARD KSIAZEK

KARL KUENEMANN

KIMBERLY JOHNSON

RICKY KUYKENDALL

THURLIN JOHNSON, II

PETE JOHNSON, JR.

DANNY JONES

DEBORAH JONES

KELLI JONES

SANDRA JONES

ANGEL JONES

ROSE JONES

JAMES JONES, JR.

BRANDON JORDON

JAIME JUAREZ

CESAR JUAREZ

JOSHUA KAISER

BRIAN KASTL

RICHARD KEATON

STEVEN KEELING

ANTONYO KELLER

AARON KELLY

OMAR KELLY

GREGG KENNEDY

TRENT KEPLINGER

ABDUL KHAN

EBRAHIM KHIDIR

RENA KIGHT

ALAN KILGORE

BOBBY KILGORE

THANG KIM

GEORGE KINDLE

KENOSHA KINDLE

LORI KING

RUSSELL KING

JUSTIN LACEY

PHILLIP LAFOND

JEANETTE LAIRD

RENATO LALATA

LEE LAMB

COLE LAMBERT

DEBORAH LANE

DONALD LANEY

MANUEL LARA

JEFFREY LAWSON

RONALD LAWSON

RICKY LAWSON

DAVID LAYSON

QUENTIN LEE

RHONDA LEE

MATTHEW LEEPER

JOSE LEJONA

PATRICIA LENNOX

ALBERTO LEON

HUGO LERMA

RONALD LESTER

KEVIN LEWIS

JOHNNY LEWIS, JR.

GILBERTO LEYVA

HONG  LIN

PING LIN

JERRY LINCOLN

WILLIAM  LINDSAY

JAMES LINWOOD

ELIZABETH  LISCANO

ANTHONY LITTLE

JARED LITTLEJOHN

JIAN LIU

STEVEN LO

CARMEKA HARDING

MICAH HOLT

SANGARAPILLAI JEYAKUMARAN

KIRK KHILLINGS

DAVID LOPEZ

GABINO LOPEZ

JORGE LOPEZ

MARGARITO  LOPEZ

MARIO LOPEZ

THOMAS LOPEZ

CRISSTIAN LOPEZ

RUFINO LOPEZ, JR.

TOMMIE LOVE

VINCENT LOWE

PAUL LOWERY

DIANA LOZOYA

ADRIAN MARTINEZ

JOSEPH McGHEE

ALFREDO MARTINEZ

ANTONIO McGILBRA

MARC MOORE

MARIA MOORE

JOSE MARTINEZ

JUAN MARTINEZ

KAREN MARTINEZ

RAMIRO MARTINEZ

ROBERTO MARTINEZ

FRANCISCO MARTINEZ

JAVIER MARTINEZ

JOSE MARTINEZ

JUAN MARTINEZ

REBECCA  McGUIRE

MICHAEL MOORE

DOMINGO McKNIGHT

JOSHUA McLAIN

GEORGIE McNAC

GINA MEANS

DAVID MEJIA

JAMES MELDA

TONY MOORE

TROY MOORE

CARLOS MORAN

RON MOREHEAD

TONY MOREHEAD

DAVID MORELAND

MANUEL MELENDEZ-HERNANDEZ

EVAN MORGAN

SEAN MELILLO

MATTHEW MORGAN

ANTHONY MORGAN

DAVID MORGERSON

MARCUS MORROW

TIEN NGUYEN

TUAN NGUYEN

NITA NICHOLS

KAREN NILES-BLAYER

STEVEN NOBLE

HANK NOESKE

JERRY NOLAN

ABDOLHOSSEIN NOORI

WILLIE NORFLEET

LAMAR NORMAN

MATTHEW NORRIS

STEVEN NORRIS

DEBRA NOTHNAGEL

ALEXANDER OFOSU

EDWARD MARTINEZ-GONZALEZ

HERNAN MEMBRILA

JARRAD LUDLOW

SOL MARTINEZ-LOPEZ

KEVIN MENDENHALL

QUANNAH LUDLOW

JUAN MARTINEZ-RUIZ

IRMA MERCADO

ANDREA LUECK

KENNETH LUFKIN, JR.

KENNETH LUIS

MARIANA LUNA

JESSE LUPER

WILLIE LYNCH

ADAN MACARIO

JAMES MASON

JERRY MASON

BEVERLEY MASON

BILLY MASSEY

IAN MATHESON

ARTURO MATUL

EVERADO MATUL

BRIAN MACDOUGALL

RON MAUCH

GREGORY MACK

MICHAEL MACK

DON MADEWELL

KEVIN MAXWELL

LEONARD MAXWELL

VLADO MAZILICA

AUBREY METCALF, JR.

MOHAMMAD MORTEZAEI

JOHN OGLE

KITTY MEYER

DALE MICHELSON

MOMCILO MIJAKOVAC

RONALD MIKEL

RUSSELL MILE

RANULFA MILIAN

CHRIS MILLER

MICHAEL MILTON

BRIAN MINGLE

BRUCE MINTON

KURT MORTON

CLAYTON MOTE

DARRELL MOTE

OMAR MOYA

ERIC MULLINIKS

EMMANUEL MUNOZ

JESUS MUNOZ

EDUARDO MURILLO

JOHNNY MUSGRAVE

LEE OLIVER, JR.

ANTHONY OLIVERAS

EVELIO OLIVERAS-RIVERA

ERIC  OLSON

JOSE OLVERA

SCOTT O'NEILL

JAMES O'NEILL, JR.

JAMES O'NEILL, SR.

MIGUEL OQUENDO

RAGULENDRAN MUTHURAJAH

GERRIN ORANGE

ALEJANDRO MAGANA

COURTNEY McAFEE

CHRISTOPHER MITCHELL

DAVID MYERS

JUVENTINO ORNELAS, JR.

ARTURO MAGANA

MONICA MAGANA

OCTAVIO MAGANA

SYED MAHMOOD

ZAHID MAHMOOD

JUSTIN MAINUS

CARLOS MALONE

NATHANIEL MCALEXANDER

DOUGLAS MITCHELL

DEBORAH McATEER

RUSSELL MITCHELL

TINA McBEATH

ANTHONY  MITCHELL

APRIL NAIL

ASAD NAKHAEI

VINCENT NASH

ROBERT McBOWMAN

JAY MODISETTE

ATTAR NASHWAN

CHRISTOPHER McCLAIN

RONALD MODLIN

DIRK McCLELLAN

IRMA MOGUEL

MARIA NAVA

MARTIN NAVA

LETICIA ORONA

JOAQUIN OROPEZA

ADAN ORTIZ

HOMERO ORTIZ

ROSA ORTIZ

HERIBERTO ORTIZ-GONZALEZ

MICHAEL McCLELLAND

HESHMATOLLAH MOHAMMADALIZADEH

MAHENDRAN NAVARATNAM

AXEL ORTIZ-PACHECO

BARBARA MALONE

DORIS McCLOUD

MOHAMMAD MOHAMMADI

YOUNUS NAZMI

JOSEPH McCOLLOCH

BRAULIO MOISES-LEE

COSMAS NDLOVU

ERIC MANN

KENNETH MANN

ARTHUR MANNING

ROY McCONNELL

DEBRA McCOWAN

CHRISTOPHER MANSON

WESLEY McCOWAN, JR.

VICTOR MAPPS

SHAWN McCRARY

WILLIAM MARKWARDT

ROBERT McCULLEY

JOSE MOLINA

MARTHA MOLINA

STEVEN MOLSTER

JOSHUA MOLT

LUKE MOMODU

CLAYTON NEAL

SAMUEL NEALE

JOSE NEGRON

NATALIE NEILSON

NATHANIEL NELSON

RONALD NELSON

PEDRO NEVAREZ

JERRY ORTWEIN

DANIEL OSBERN

DAVID OSBORNE

ERNESTO PACHECO

GUILLERMO PACHECO

LUIS PACHECO

EDMUNDO PAIZ

TARAS PANCHYSHYN

J PANIAGUA

FRANK PAOLO

WILBURN HORNER, JR.

RAUL JIMENEZ

ANA MARROQUIN

KATHY McCULLOCH

ABUEDE MOMODU, JR.

VINCENT JIMENEZ

STEPHEN KINSEY

FREDERICK JIMMERSON

ALEKSANDR KIRYUKHIN

JOEL LOCKMILLER

KAREN JOBE

VICTOR JOHN

BRIEN JOHNSON

DAVID KNEBEL

ROBERT KNUTH

JOHN KOERBER

FRANKLIN LOGAN, JR.

MICHAEL LOLLIS

ANA LOPEZ

JOSE MARRUFO

ECO MARSHALL

DARRELD MARTIN

DELL MARTIN

THOMAS MARTIN

FLORENCE McDANIEL

JOSE MONREAL

LOYD McDANIEL

GERMAN MONTANO, JR.

KARMEN NEWMAN

MARCUS McDANIEL

MARCEL MONTGOMERY

DUNG NGUYEN

GERALD PARKS, JR.

JAMES McELROY

JULIO MONTOYA-SERNA

THANH NGUYEN

DEBORAH McFARLIN

JAMES MOORE

THO NGUYEN

SAUL PARRA

LUCAS PARRISH

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JOSE RUIZ ARAMBULO

KENNETH SCOTT

MARLE VALMORIA

DONALD WASHINGTON

LINDA WYRICK

JAMES PARRO

MARCUS PARTEE

OSCAR PARTNER

DILIP PATEL

CORRY PATTERSON

JEFFERY PATTY

VADEN PAULSEN

JOSE PAZ

TRAVIS PEARSON

KIMBERLY PEEKS

ENRIQUE PENA

JOSE PENA

CHRIS PENCZAK

VLADIMIR PENIAZ

SERGIO PERALTA

CESAR PEREZ

JOE PEREZ

JOSE PEREZ

JUANA PEREZ

MARIA PEREZ

SERGIO PEREZ

JOSEPH PERKINS

LADRUE PETERS

EARNEST PETTY

DANIEL PEURIFOY

RANDY PHELPS

LOUIS PHILLIPS

JEFF PICKERING

REBECCA PIERCE

JOSE PINEDA

KOSTA PIRUZESKI

CLIFFORD PITCHFORD

KEVIN PITTSER

CARL PLYLEY

BASANT POKHREL

RENU POKHREL

MICHAEL POLK

OSCAR POUND

RUDY POWELL

PHILLIP POWELL

GREG POWERS

JEFFERY POWERS

JOSE PRADO

TONY PRATT

NIMALAKIRTHI RAJASINGHE

JEFF ROBISON

FRANCISCO RAMIREZ

MARIA ROBLES

PATRICIA PRITCHETT

FRANKIE PRIVITT

ALMA PUGA

MARK  PUGLIESE

DAVID QUANG

VAN GIOAN QUANG

WILLIAM QUILLMAN

JESUS QUINONES

LUIS QUINONES

JOHN QUINTON

JOSE RAMIREZ

PEDRO RAMIREZ

JOSE RAMON

MOISES RAMOS

ANTHONY RANSOM

TOMMY RASNIC

ROBERT RATLIFF

TERRY RATZLOFF

ROBERT RAYNO

FLOR REBOLLAR

PEGGY REDDEN

ANTHONY REED

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LYNN REED

JAMES REED

MARGARET REEVES

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EVERETT REITZ

DAVID RENEAU

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SEAN RICHARDSON

JAMES RITCHIE

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JESUS RIVAS

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DEREK RUSSELL

FRANCISCO RIVERA

DERRICK RUSSELL

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DERRICK RUTH

LAURA ROBERSON

CYNTHIA SABETTI

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JAMES ROBINSON

MICHAEL ROBINSON

NICK SABETTI

ZIAD SADEEK

DARRIN SAGE

NARINDER SAHOTA

JOSEFINA SALDANA

J SALDIVAR

JOSE SALDIVAR

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VOLODYMYR RODOVNSKY

MARIA SALDIVAR

RONALD RODRIGUE

MIGUEL SALDIVAR

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VICTOR SALDIVAR

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JOSE RODRIGUEZ

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EVA SANCHEZ

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ANDREW SEREDA

ANDREW SERISIS

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HUGHGO SEWELL

CARROL SHACKELFORD

MUHAMMAD SHAHZAD

ALEXSANDR SHAPOVALOV

ARVINDER SHARMA

VANESSA SHARP

FRANKIE SHARPE

GREGORY SHAW

STEVEN SHAW

THOMAS SHAW

KATHY SHEFFIELD

STEPHANIE SHELL

GILBERT SHELTON

JOEL SHELTON

KATHLEEN SHEPARD

DON ROGERS

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JUAN ROJAS

LIDIA ROJAS

NELSON ROJAS

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TERRY ROLAND

VIOLA ROLLINS

ROBERT ROMO

RAMON ROSALES

BOBBY ROSS

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ALICIA SANDERS

BRETT SANDERS

TANISHA SANDERS

HARNEK SANDHU

NELSON SIERRA

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LAWRENCE SIMMONS, JR.

ANDRE SIMON

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PATRICK SIMPSON

SILVESTRE SANTANDER

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MIGUEL SANTIAGO

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RONALD SISNEROS

WENCESLAO SANTIAGO

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JOHN SLINKER

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MARCELL SMITH

ANGELA RIDEOUT

DELMECIO RISER

STEPHEN RISER

FRANKLIN RISNER

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NINA SMITH

ROBERT SCHOOLEY

RENALDO SMITH

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RUSSELL SCHOONOVER

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FRANCISCA SANCHEZ

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JOSE RODRIGUEZ-CINTION

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BARBARA SHIPMAN

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TERRY ROMBACH

CHARLES THOMASON

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GERALDINE WATSON

SWEETIE SMITH

MORICE SMITH, JR.

CLIFFORD TERRELL

JOSEPH THOMAS

MICHAEL SMOLINIEC

LEE THOMAS

MARLOW THOMAS

DANG VANG

SHANNON VANN

JOHN VANNESS

MIKE SNOBLE

JULIO SOBERANIS

MALCOLM SOLES

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IMELDA SOLIS

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SOVANIDD TIEM

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SHERRY VAUGHT

JOSE VAZQUEZ

DAVID TITSWORTH

ROGELIO VAZQUEZ

KHAMPHORDY SOUPHOMMANYCHANH

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KEVIN SOUVANNASING

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BRAD SOWELL

LAMARCUS TODD

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JORGE VELASCO

SAM WASHINGTON

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VIELKA WASHINGTON

ANTONIO YARBROUGH

JAMES WATLEY, JR.

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ANTHONY WELCH

CLARENCE WELDON

DERRIEK WELLSLEY

SUSAN WERNER

CAROLYN WESLEY

SHARON WEST

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KATHRYN YOUNG

MARC YOUNG

DINAH YOUNGBLOOD

DWAYNE YOUNGBLOOD

JOSH YOUNGS

TRINIGUA ZACHERY

NIKOLAY ZAGORODNIY

AURORA ZAVALETA

ANDREW SPADAFORA

CHRISTOPHER TOLES

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ELDA SPEARS

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LARRY STANTON

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RUSSELL STONER

GERARDO TORRES

RAQUEL TORRES

REINALDO TORRES

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DANH TRAN

HA TRAN

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UT TRAN

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JAMES VERHAMME

JUAN VIDALES

SEGUNDO VIGIL

EFRAIN VILLA

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TIMOTHY WHITE

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JOHN ZENTER

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DANIEL STRELOW

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W SYED

ERIC SYPERT

JAMES TABER

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CUONG VO

SUONG VO

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HA TRINH

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JEREMIAH WILSON

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STACEY WALTERS

WHITNEY WINN

MICAH WISDOM

PERNELL UNDERWOOD

CHARLES WALTON

EDWARD WOFFORD

NOE URQUISA

MARIA URQUIZA

YADIRA URQUIZA

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SHAHAB WARSI

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SAM WOOD

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MELVIN WYNNE

BRITTNEY WASHINGTON

JIM WYRICK

IVELISSE SANCHEZ-RIVERA

ASLAM SIDDIQUI

DEBRA STRASBOURG

ERIC TREIBER

MARCO VILLARREAL-ENRIQUEZ

MARIO WILLIAMS

AON 06012 AR Back End 4/12/06 11:18 AM Page 8

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