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How old is my Luxaire furnace or AC?
Type the serial number from the Luxaire label to see when it was built. Luxaire units are built by York (Johnson Controls until 2025, now Bosch), so the serials follow that company's format.
Reading a Luxaire serial number
Luxaire is a York brand and uses York’s serial formats. A 2001 CPSC recall lists York, Luxaire and Coleman furnaces under the same serials.
About Luxaire
- Luxaire began as the Olsen furnace company and took the Luxaire name in 1965.
- Westinghouse owned Luxaire before York bought Westinghouse’s air conditioning division in 1981.
- Luxaire was one of the brands in the residential HVAC business Bosch bought from Johnson Controls in 2025.
Sources: Airco / Olsen HVAC Manuals (InspectApedia), York International Corp. (Reference for Business company history), Johnson Controls International plc Form 8-K, Exhibit 99.1 (July 2024)
York plant, year digits and month letter
Used 2004 to today. Example: W1G7123456
The serial starts with a plant letter, a digit, a month letter and another digit. The two digits together are the year. W1G7 means July 2017: 1 and 7 make 17, and G is July. Month letters skip I and J.
Worked example: W1G7123456 was built July 2017, so it is 9 years, 3 months old as of October 2026.
| Letter | Month |
|---|---|
| A | January |
| B | February |
| C | March |
| D | April |
| E | May |
| F | June |
| G | July |
| H | August |
| K | September |
| L | October |
| M | November |
| N | December |
Sources: CPSC 2001 York, Luxaire and Coleman furnace recall (serials WFKM and WGKM), McGarry and Madsen: York serial numbers, Building Intelligence Center: York, Inspector Handbook: York
York four letters and six digits
Used 1971 to 2004. Example: WGKM007655
The serial starts with four letters. The first is the plant, the second is the month and the third is the year. The year letters repeat every 21 years, so A to N can mean two dates. WGKM means July 2001.
Worked example: WGKM007655 fits July 1980 or July 2001. The page above explains how to tell which.
| Letter | Month |
|---|---|
| A | January |
| B | February |
| C | March |
| D | April |
| E | May |
| F | June |
| G | July |
| H | August |
| K | September |
| L | October |
| M | November |
| N | December |
| Letter | Year |
|---|---|
| A | 1971 or 1992 |
| B | 1972 or 1993 |
| C | 1973 or 1994 |
| D | 1974 or 1995 |
| E | 1975 or 1996 |
| F | 1976 or 1997 |
| G | 1977 or 1998 |
| H | 1978 or 1999 |
| J | 1979 or 2000 |
| K | 1980 or 2001 |
| L | 1981 or 2002 |
| M | 1982 or 2003 |
| N | 1983 or 2004 |
| P | 1984 |
| R | 1985 |
| S | 1986 |
| T | 1987 |
| V | 1988 |
| W | 1989 |
| X | 1990 |
| Y | 1991 |
Sources: CPSC 2001 York, Luxaire and Coleman furnace recall (serials WFKM and WGKM), McGarry and Madsen: York serial numbers, Building Intelligence Center: York, Inspector Handbook: York
Luxaire recalls
Recalls from the U.S. Consumer Product Safety Commission that name Luxaire. Whether a unit is included depends on its model and build date; the checker above flags matches.
| Year | Recall | Hazard |
|---|---|---|
| 2001 | York, Luxaire and Coleman gas furnaces | Heat exchanger tubes can come loose and leak carbon monoxide. |
| 1999 | York Diamond 80 downflow furnaces | Insulation can fall onto the heat exchanger and start a fire. |