How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manufactured and modular homes
How do I determine the age of a GE (General Electric) air conditioner or heat pump from the serial number?
Monday, December 16, 2019
General Electric heat pumps and air conditioners use a letter code for date of manufacture that is the first digit of the serial number. Because the condenser data plates are stamped instead of printed, they are difficult to read and photograph, but rubbing away the dust and shining a flashlight obliquely across the surface makes them more legible.
E = 1969. F = 1970. G = 1971 H = 1972
J = 1973 K = 1974 L = 1975 M = 1976
N = 1977 P = 1978 R = 1979 S = 1980
T = 1981 V = 1982 W = 1983 X = 1984
Y = 1985 A = 1986 B = 1987 C = 1988
D = 1989
The “W” at the beginning of the serial number shown above indicates the unit was produced in 1983 and, although it is not too legible, the manufacture date to the right is 08/83, which verifies the date code. All the GE condensers we have seen also have the date of manufacture clearly marked like that. Because these systems have not been manufactured for 30 years, even if you cannot interpret the serial number, it’s a sure thing that you are looking at a very old condenser.
To determine other key specs of your HVAC system, see one of these other blog posts:
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To learn more about heating and air conditioning systems, see these other blog posts:
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