AAON® and AAONAIRE® HVAC age

How to determine the date of production/manufacture or age of AAON ® brand HVAC Systems.

The date of production/manufacture or age of AAON brand HVAC equipment can be determined from the serial number located on the data plate.

Parent Company: AAON

Example serial number styles/formats found:

Style 1: 200108AKG26241
Style 2: 97JKGK153
Style 3: AKEC08701

Style 1: 200108AKG26241

Year of manufacture can be determined by using the 1^st - 4^th numerical digits

Month of manufacture can be determined by using the 5^th - 6^th numerical digits

Style 2: 97JKGK153

Year of manufacture can be determined using the 1^st & 2^nd numerical digits

Month of manufacture can be determined using the 3^rd character (see chart)

Style 3: AKEC08701

Year of manufacture can be determined using the 6^th &7^th numerical digits

Month of manufacture can be determined using the 8^th & 9^th numerical digits

Page last updated: 08/07/2023

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Brand History:

1988 - The company was founded with the purchase of John Zink Air Conditioning Division.
1991 - Formed AAON Coil Products, a subsidiary to AAON, Inc. and purchased the coil making assets of Coil Plus.
1992 - AAON Coil Products purchased 110,000 square feet plant in Longview, Texas.
2018 - Acquired WattMaster Controls, Inc.
2019 - Company broke ground on new R&D facility in Tulsa, OK
Company has grown to a publicly traded company with over 3,000 employees. Headquartered in Tulsa, OK, with secondary locations in Longview, TX, and Kansas City, MO.