AAON, INC. Second Quarter 2009 Results Call

| Source: AAON AAON

TULSA, OK--(Marketwire - August 3, 2009) - 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 06/31/2009.
--  Recent Events
--  Future Outlook


    Date of Call:   Monday, August 10, 2009
    Time:           4:15 p.m. (Eastern Time)
    Telephone #:    1-877-737-1669
    Pass code:      VL 17801

    Rebroadcast (Available through August 17, 2009)

            Toll Free:  1-800-355-2355
            Pass code:  178018

AAON looks forward to your attendance at the call.

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 visit www.aaon.com.

Contact Information: For Further Information: Jerry R. Levine Ph: (914) 244-0292 Fax: (914) 244-0295

Hyperliens