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How old is my heat pump?
65 heat pump brands catalogued, 57 with a sourced serial format you can decode here. Pick your brand; the serial format depends on it.
- 57 of 65 heat pump brands on this site have a sourced serial number date format.
- The InterNACHI Standard Estimated Life Expectancy Chart for Homes lists Heat Pump at 10 to 15 years of expected service.
Brands with a decoder
Aire-Flo1973 to present1 formatAirEase1973 to present1 formatAirquest1980 to present1 formatAllied Air1973 to present; era not stated; era not stated4 formatsAmana HVACera not stated; era not stated; era not stated3 formatsAmerican Standard2010 to present; 2002 to 2009; 1983 to 20013 formatsAmeristar2010 to present; 2010 to present; 2002 to 20094 formatsArcoaire1980 to present1 formatArmstrong Air1973 to present; 1978 to 19922 formatsBard1980 to present1 formatBosch (HVAC)before 20091 formatBroan HVACera not stated; era not stated; era not stated3 formatsBryant1980 to present; 1980 to 1984; 1980 to 19844 formatsCarrier1980 to present; 1960 to 19792 formatsChampion2004 to present; 1971 to 20042 formatsClimateMaster1998 to present; before 19972 formatsColeman2004 to present; 1971 to 2004; 1992 to 20044 formatsComfort-Aireera not stated; era not stated; era not stated5 formatsComfortmaker1980 to present; before 19912 formatsConcord1973 to present1 formatDaikin2012 to present; 1977 to 19892 formatsDay & Night1980 to present1 formatDucane1973 to present1 formatEvcon2004 to present; 1971 to 2004; 1992 to 20044 formatsFraser-Johnston2004 to present; 1971 to 2004; 1992 to 20044 formatsFrigidaire HVACera not stated; era not stated; era not stated3 formatsGeneral Electric (legacy central HVAC, pre-1982)1960 to 1989; 1965 to 1985; 1965 to 19853 formatsGibson HVACera not stated; era not stated; era not stated3 formatsGoodmanera not stated1 formatGuardian2004 to present; 1971 to 20042 formatsHeil1980 to present; before 19792 formatsInterthermera not stated; era not stated; era not stated3 formatsJanitrolera not stated; before 19852 formatsKeepRite1980 to present1 formatKelvinator HVACera not stated; era not stated; era not stated3 formatsLennox1973 to present1 formatLG2000 to present1 formatLuxaire2004 to present; 1971 to 2004; era not stated4 formatsMagic-Pak1973 to present1 formatMaytag HVACera not stated; era not stated; era not stated3 formatsMideaera not stated1 formatMiller (mobile home)era not stated; era not stated; era not stated3 formatsMrCoolera not stated; 2010 to present2 formatsNapoleonera not stated1 formatNordyneera not stated; era not stated; era not stated3 formatsPayne1980 to present; before 1969; 1960 to 19793 formatsPhilco HVACera not stated; 1980 to 1984; 1970 to 19796 formatsRheemera not stated; era not stated2 formatsRunTru2010 to present; 2002 to 2009; 1983 to 20013 formatsRuudera not stated; era not stated2 formatsTappan HVACera not stated; era not stated; era not stated3 formatsTempstar1980 to present1 formatTrane2010 to present; 2002 to 2009; 1983 to 20013 formatsWaterFurnace2012 to present; 1985 to 2012; before 19843 formatsWeatherKingera not stated; before 1989; 1990 to 19954 formatsWestinghouse HVACera not stated; 1980 to 1984; 1970 to 19796 formatsYork2004 to present; 1971 to 20042 formats
Brands catalogued, format not yet sourced
Where the data plate is on a heat pump
On the outdoor unit, same place as a condenser: a plate on the side or back of the cabinet near the line set. The indoor air handler carries its own plate with its own serial.
General guidance, not brand-specific: the owner's manual or the installer can point to the exact spot. See the data plate guide.
For scale only: the InterNACHI Standard Estimated Life Expectancy Chart for Homes lists Heat Pump at 10 to 15 years of expected service (nachi.org). That chart is a guideline, not a prediction for your unit.