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 Trane air conditioner or heat pump from serial number?
Friday, July 20, 2018
Unlike other manufacturers that encode the year of manufacture in their serial number, Trane prints it clearly, usually in the upper right of the data plate. Older Trane units have a metal plate that is stamped with their information and, if it is worn or dirty, you might have to wipe off the surface dirt and shine a flashlight across the surface of the plate obliquely to read the date etched into the metal.
If the manufacture date is missing or not legible, there are three ways that the manufacture year may be encoded in the serial number. It may be the first two numbers:
Or only the first number of the serial number:
Or, if the serial number starts with a letter, here is how to translate it:
T = 1981, U = 1982, W = 1983, X = 1984
Y = 1985, S = 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 data plate below indicates the unit was manufactured in 1994, which is also verified at the upper right of the data plate.
Also, see our blog post How can I tell the size in tons of a Trane air conditioner or heat pump from the model number?
To find out the age of another brand of air conditioner or heat pump, go to How do I determine the age of my air conditioner?, which has a listing of all major manufacturers and links to instructions for decoding their serial numbers.
And to figure out what all the other numbers listed on the condenser data plate mean, go to our blog post How do I understand the air conditioner or heat pump condenser label (data plate)?
To find the age of other home components, go to How can I find out the age of a roof? and How do I determine the age of an electrical panel? and How do I determine the age of my water heater? For life expectancies, visit What is the average life expectancy of the components of a house?
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
To learn more about heating and air conditioning systems, see these other blog posts:
of Blog Posts
Top 5 results given instantly.
Click on magnifying glass
for all search results.
Buying a home in North/Central Florida? for a team inspection by two FL-licensed contractors and inspectors. Over 8,500 inspections completed in 20+ years. In a hurry? We will get it done for you.