AAON Chiller Is Winner in ACHR News 2009 Dealer Design Awards

TULSA, OK, Jul 13 (MARKET WIRE) --
AAON (NASDAQ: AAON) was recognized for excellence in product design in
the 5th annual Dealer Design Awards Program sponsored by The Air
Conditioning Heating & Refrigeration News magazine. An independent panel
of 41 contractors acted as judges in the contest that had 124 entries
from 84 different brands. The company's LC Series Chiller was the Bronze
Award Winner in the HVAC Commercial Equipment category. The ACHR News is
the leading trade magazine in the heating, ventilating, air conditioning,
and refrigeration industries.

News Publisher John Conrad stated, "These awards give us a unique
opportunity to recognize the outstanding research and development efforts
that go into many of the products serving the HVACR industry and the
awards issue gives our readers an opportunity to read about innovative
installation and service solutions."

AAON is delighted with ACHR's recognition of the 5 to 54 ton LC Series
Chillers as a contractor friendly design. By isolating the controls and
compressor compartment, the condenser air stream remains undisturbed
during regular service and maintenance. The large, hinged service doors
provide effortless unit access. Factory installed variable or constant
flow primary pumps reduce system installation time. A variable pump,
along with the R-410A variable capacity scroll compressors, creates high
part load efficiency and offers low load operating capability.

"The recognition of three AAON products (RN, SA, and LC Series) in the
2009 Dealer Design Awards demonstrates our continuing commitment to
designing and engineering innovative and high performance HVAC
equipment," said Norm Asbjornson, President and CEO of AAON.

Winning entries in the Dealer Design Awards were featured in the July 13,
2009 issue of The ACHR News, which is distributed nationally to over
33,000 HVACR contractors, wholesalers, and other industry professionals.

About AAON

AAON is engaged in the engineering, manufacturing, marketing and sale of
air conditioning and heating equipment consisting of standard, semi-custom
and custom rooftop units, chillers, boilers, air handling units, make-up
air units, heat recovery units, condensing units and coils. Since the
founding of AAON in 1988, AAON has maintained a commitment to design,
develop, manufacture and deliver heating and cooling products to perform
beyond all expectations and demonstrate the value of AAON to our
customers. For more information, please visit www.aaon.com.

Contact:
Sam Neale
918-583-2266

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