How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manfuactured and modular homes
How can I determine the age of an American Standard air conditioner or heat pump from the serial number?
Friday, November 29, 2019
Most American Standard units state the date of manufacture clearly on the data plate, usually at the upper right, but it is also encoded in the serial number. Either the first number or the first two numbers are the year of manufacture and here’s two examples.
The only exception to this simple system is that some models manufactured during the 1980's thru the 90's, and specifically the Allegiance and Heritage lines, use the first letter of the serial number to encode the year of manufacture.
W = 1983, X = 1984, Y = 1985, Z = 1986
B = 1987, C = 1988, D = 1989, E = 1990
F = 1991, G = 1992, H = 1993, J = 1994
K = 1995, L = 1996, M = 1997, N = 1998
P = 1999, R = 2000
So the “K” in the serial number of the data plate shown below indicates that the condenser was made in 1995. But, of course, it is also stated outright in the upper right of the label.
To determine the size in tons of your American Standard unit, see our blog post How can I tell the size in tons of an American Standard air conditioner or heat pump from the model number? For the age of another brand or manufacturer, go to our blog post How do I determine the age of my air conditioner?
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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