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How old is my air conditioner?
64 central air conditioner brands catalogued, 54 with a sourced serial format you can decode here. Pick your brand; the serial format depends on it.
- 54 of 64 air conditioner brands on this site have a sourced serial number date format.
- The InterNACHI Standard Estimated Life Expectancy Chart for Homes lists Air Conditioner (central) at 7 to 15 years of expected service.
Brands with a decoder
Aire-Flo1973 to present; before 19722 formatsAirEase1973 to present; before 19722 formatsAirquest1980 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 20014 formatsAmeristar2010 to present; 2010 to present; 2002 to 20095 formatsArcoaire1980 to present1 formatArmstrong Air1973 to present; 1978 to 1992; before 19723 formatsBroan HVACera not stated; era not stated; era not stated3 formatsBryant1980 to present; 1980 to 1989; 1980 to 19846 formatsCarrier1980 to present; 1980 to 1989; 1969 to 19794 formatsChampion2004 to present; 1971 to 20042 formatsColeman2004 to present; 1971 to 2004; 1992 to 20044 formatsComfort-Aireera not stated; era not stated; era not stated6 formatsComfortmaker1980 to present; before 19912 formatsConcord1973 to present; before 19722 formatsDaikin2012 to present1 formatDay & Night1980 to present1 formatDucane1973 to present; before 19722 formatsEvcon2004 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 formatsKenmore HVACera not stated1 formatLennox1973 to present; before 19722 formatsLGbefore 20121 formatLuxaire2004 to present; 1971 to 2004; era not stated4 formatsMagic-Pak1973 to present; before 19722 formatsMaytag HVACera not stated; era not stated; era not stated3 formatsMiller (mobile home)era not stated; era not stated; era not stated3 formatsMrCoolera not stated1 formatNapoleonera not stated1 formatNordyneera not stated; era not stated; era not stated3 formatsPayne1980 to present; before 1969; 1980 to 19895 formatsPhilco HVACera not stated; 1980 to 1984; 1970 to 19796 formatsRheemera not stated; era not stated2 formatsRunTru2010 to present; 2002 to 2009; 1983 to 20014 formatsRuudera not stated; era not stated2 formatsSamsung1997 to 20041 formatTappan HVACera not stated; era not stated; era not stated3 formatsTempstar1980 to present1 formatTrane2010 to present; 2002 to 2009; 1983 to 20014 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
- Bard
- Bosch HVAC
- Century HVAC
- Coleman Mobile Home / Evcon
- Mammoth
- Midea
- Napoleon HVAC
- Oxbox
- Reznor
- Sure Comfort
Where the data plate is on an air conditioner
On the outdoor condenser: a metal or foil plate on the side or back of the cabinet, often near the refrigerant line connections. Some brands repeat it inside the electrical access panel.
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 Air Conditioner (central) at 7 to 15 years of expected service (nachi.org). That chart is a guideline, not a prediction for your unit.