How old is my AAON packaged unit?
Serial number age decoder for AAON packaged rooftop and ground units: 3 format eras, the decode rule in plain English, transcribed tables, and the official lookup.
Type the serial from the data plate, not the model number. Nothing is sent anywhere; the tables are in this page.
Format example: 200108AKG26241
- AAON packaged unit serial numbers in the 2000 to present format encode the year as digits 1-4 (YYYY) and the month as digits 5-6 (source: building-center.org).
- Example: serial 200108AKG26241 decodes to August 2001.
- AAON packaged unit serial numbers in the 1990 to 1999 format encode the year as digits 1-2 (YY) -> 1997 and the month as letter 3 (A=Jan..M=Dec, I skipped) -> Sep (source: building-center.org).
- Example: serial 97JKGK153 decodes to September 1997.
- AAON packaged unit serial numbers in the before 1999 format encode the year as digits 6-7 (YY) -> 1987 and the month as digits 8-9 -> Jan (source: building-center.org).
- Example: serial AKEC08701 decodes to January 1987.
- AAON's official lookup at aaon.com returns warranty / registration lookup.
Format eras
- 2000 to present VERIFIED
######AAA#####digits 1-4 (YYYY) - before 1999 VERIFIED
AAAA#####digits 6-7 (YY) -> 1987 - 1990 to 1999 VERIFIED
##AAAA###digits 1-2 (YY) -> 1997
How to read the serial
2000 to present formatVERIFIED
Shape ######AAA##### · example 200108AKG26241 · confidence high
- Year
- digits 1-4 (YYYY)
- Week or month
- month = digits 5-6
- Plant
- letters 7-9 = factory codes
Example: serial 200108AKG26241 decodes to August 2001.
before 1999 formatVERIFIED
Shape AAAA##### · example AKEC08701 · confidence medium
- Year
- digits 6-7 (YY) -> 1987
- Week or month
- month = digits 8-9 -> Jan
- Plant
- letters 1-4 = codes
Example: serial AKEC08701 decodes to January 1987.
1990 to 1999 formatVERIFIED
Shape ##AAAA### · example 97JKGK153 · confidence high
- Year
- digits 1-2 (YY) -> 1997
- Week or month
- month = letter 3 (A=Jan..M=Dec, I skipped) -> Sep
- Plant
- letters 4-6 = factory codes
| Month code | Month |
|---|---|
| A | January |
| B | February |
| C | March |
| D | April |
| E | May |
| F | June |
| G | July |
| H | August |
| J | September |
| K | October |
| L | November |
| M | December |
Example: serial 97JKGK153 decodes to September 1997.
Where the data plate is on a packaged unit
On the cabinet exterior near the electrical access panel, or inside the panel door.
General guidance, not brand-specific: the owner's manual or the installer can point to the exact spot. See the data plate guide.
Open the official AAON lookup takes serial number; returns warranty / registration lookup; URL verified live
This site is a reference built from published tables. The manufacturer's own lookup wins whenever the two disagree.
What we could not confirm
- Three styles. aaon.com/service = 200 (service/support landing; /warranty, /support 404). Commercial RTUs - no consumer lookup.
Sources
- https://www.building-center.org/aaon-hvac-age/
- img: AAON_AAONAIRE-...-Style-1a...png
- img: AAON_...-Style-2...png (transcribed)
- img: AAON_...-Style-3...png
- https://www.aaon.com/serviceofficial