AAON Voted "Product of the Year" by "Consulting-Specifying Engineer" Magazine

TULSA, OK--(Marketwire - Oct 18, 2011) - AAON, INC. (NASDAQ: AAON), a leading manufacturer of heating and cooling products, announced that its RQ series geothermal rooftop unit has been named 2011 Product of the Year - Silver in the HVAC/R category by the readers of Consulting-Specifying Engineer.

This award adds to the company's previous Product of the Year successes including the RN series rooftop unit -- 2010 Silver award winner, the LC series chiller -- 2010 Bronze award winner and the 2008 announcement that its rooftop product with Digital Precise Air Control (D-PAC) had been voted Product of the Year - Gold in the HVAC category, as well as, Most Valuable Product (MVP) for the overall competition.

"We are delighted that the readers of this leading trade journal have recognized our equipment by honoring us with this award," says Norm Asbjornson, President and CEO of AAON. "We greatly appreciate this vote of confidence. It speaks to the great work of our employees and sales representatives who are committed to providing innovative HVAC products of the highest quality and performance."

About Consulting-Specifying Engineer

Consulting-Specifying Engineer is a monthly publication with a circulation of over 46,000 mechanical, electrical, and plumbing (MEP) engineers.

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, packaged mechanical rooms, 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.