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AAON, INC. Second Quarter 2010 Results Call

AAON, INC. (NASDAQ: AAON). A question and answer session will follow a brief presentation by our President, Norman Asbjornson. The entire call should last about 45 minutes.

The call will cover:

   - Second Quarter Performance for the period ended 06/30/2010.
   - Recent Events
   - Future Outlook

   Date of Call: Friday, August 6, 2010
   Time:         10:00 a.m. (Eastern Time)
   Telephone #:  1-877-737-1669
   Pass code:    VA 16176

   Rebroadcast (available through August 13, 2010)

                 Toll Free: 1-800-355-2355
                 Pass code: 16176#

AAON looks forward to your attendance at the call.

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.