TULSA, OK--(MARKET WIRE)--Oct 1, 2008 -- AAON, Inc. (AAON - News), a global leader in the design, development, and manufacture of commercial and residential heating and cooling products, announces it will celebrate its 20th anniversary as a public company by ringing the opening bell at the NASDAQ Stock Market.

"We are very proud of the success of AAON since becoming a public company 20 years ago," noted Norm Asbjornson, President and Chief Executive Officer. "Over our history, AAON has maintained a business plan focused on total owner value by offering an increasing breadth of semi-custom products, with attention to energy efficiency and environmental issues. As we look back over this important period in our history, our success could not have been achieved without the continued contributions of our employees and sales representatives who are committed to providing HVAC products of the highest quality and performance. We thank the employees and sales representatives for their contributions and for the role they will play in our future success."

The participation of AAON in the opening bell ceremony will be aired live on October 3, 2008 at 9:30AM (Eastern Time) at http://www.nasdaq.com/reference/marketsite_about.stm and on the NASDAQ MarketSite Tower at 43rd and Broadway in New York, NY. For more information about AAON, visit http://www.aaon.com.

     For Further Information:
     Sam Neale
     Ph: (918) 583-2266
     Email:  Email Contact