AAON® | AAONAIRE®
How to determine the date of production/manufacture or age of AAON® and AAONAIRE® HVAC Systems.
The date of production/manufacture or age of AAON® and AAONAIRE® HVAC equipment can be determined from the serial number located on the data plate.
Parent Company: AAON, Inc.
History:
AAON Inc. was founded in 1988 with the acquisition of the John Zink Company (previously purchased by Sunbeam® in 1979, which was subsequently purchased by Allegheny International, Inc. in 1981). AAON systems are primarily encountered in commercial applications and include air handling units, packaged rooftop units (RTU’s), condensing units, chillers, boilers, water-source heat pumps, and a variety of control systems.
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 1st – 4th numerical digits
Month of manufacture can be determined BY using the 5th-6th numerical digits
Style 2: 97JKGK153
Year of manufacture can be determined using the 1st & 2nd numerical digits
Month of manufacture can be determined using the 3rd character (see chart)

Style 3: AKEC08701
Year of manufacture can be determined using the 6th &7th numerical digits
Month of manufacture can be determined using the 8th & 9th numerical digits

Page last updated: 01/03/2020