How old is my York HVAC?
On York units built since 2004 the serial is ten characters: a plant letter, then the year split across the 2nd and 4th characters with a month letter (3rd character) between them.
The same decoder works for: Coleman, Luxaire, Fraser-Johnston, Johnson Controls, Champion, Guardian.
Free. The serial is on the metal nameplate or rating label, usually near the bottom of the unit.
York serial-number formats
| Era | Format | Confidence |
|---|---|---|
| 2004–present | a 10-character serial — plant letter, year-tens digit, month letter, year-ones digit, then six digits | medium |
Worked examples
W1H2123456
→ manufactured August 2012 (about 14 years old). Read as a 10-character serial — plant letter, year-tens digit, month letter, year-ones digit, then six digits. Decoded year 2012 (digits "1" and "2" from positions 1 and 3), month August (letter "H") → manufactured August 2012, about 14 years old.
Frequently Asked Questions
How do I find the age of my York unit?
On York units built since 2004 the serial is ten characters: a plant letter, then the year split across the 2nd and 4th characters with a month letter (3rd character) between them. Enter the serial from the unit's nameplate into the decoder on this page and it returns the manufacture date and age instantly. Always confirm against the manufacture date printed on the nameplate.
Where is the serial number on a York HVAC?
The serial number is printed on the metal data plate or rating label, usually near the bottom or on the side of the unit. It is labeled "Serial," "Serial No.," or "S/N." Do not confuse it with the model number.
Is the York serial-number date exact?
It identifies the manufacture date, not the install date — a unit is often installed weeks or months after it was built. York has used more than one serial format (2004–present), so some decodes are approximate and flagged accordingly. Verify against the manufacture date on the nameplate when one is printed.
Developers & AI agents: the York decode rules are available as JSON.
Serial-number decoding is approximate. Results are estimates based on published manufacturer formats; always verify against the manufacture date printed on the unit nameplate. ApplianceAge is a CarWhere tool and is not affiliated with, endorsed by, or sponsored by any manufacturer. Brand names are used only to identify the equipment a serial belongs to.