How old is my General Electric (legacy central HVAC, pre-1982) unit?
General Electric (legacy central HVAC, pre-1982) is part of General Electric; central HVAC division sold to Trane in 1982 (later GE-badged units use Trane styles). 3 serial formats sourced across central air conditioner, heat pump, furnace.
Serial number decoder for General Electric (legacy central HVAC, pre-1982)
Type the serial from the data plate, not the model number. Nothing is sent anywhere; the tables are in this page.
Format example: 359952809
- General Electric (legacy central HVAC, pre-1982) air conditioner serial numbers in the 1960 to 1989 format encode the year as digit 7 = last digit of year; decade presumed (8 = 1968/1978/1988) and the week as digits 8-9 -> week 09 (source: building-center.org).
- Example: serial 359952809 decodes to week 9 of 1968 or 1978 or 1988.
- The 1960 to 1989 format is ambiguous: Single year digit; 9-digit numeric collides with other brands.
- General Electric (legacy central HVAC, pre-1982) air conditioner serial numbers in the 1965 to 1985 format encode the year as letter 2 (table below) and the month as letter 1 (A=Jan..M=Dec, I skipped) (source: building-center.org).
- Example: serial HM409295 decodes to August 1976.
Decoder pages by product
Format eras
- 1965 to 1985 VERIFIED
AA######Central Air Conditioner, Furnace, Heat Pump - 1965 to 1985 VERIFIED
######AACentral Air Conditioner, Furnace, Heat Pump - 1960 to 1989 VERIFIED
#########Central Air Conditioner, Furnace, Heat Pump
Official lookup
No online serial lookup was found for General Electric (legacy central HVAC, pre-1982) in our research. The manufacturer's customer service line, the installer's invoice, or a printed date on the plate are the remaining authorities.
What we could not confirm
- The 1965 to 1985 format is documented but not decodable here: letter-year rule without a transcribed table.
- No official online lookup URL was verified for General Electric (legacy central HVAC, pre-1982).
- Pre-1982 GE central AC/furnaces: 9-digit numeric with Y WW in the last 3 digits, or two-letter month/year codes at the start or end (HM409295 / 409295HM = Aug 1976). Any unit still bearing GE is far past service life.
Sources
- https://www.building-center.org/general-electric-hvac-age/
- img: GE-hvac-1.jpg
- img: ge-hvac2.jpg (transcribed)
- img: ge-hvac3.jpg