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Thread: How old is my unit?
07-12-2010, 02:25 PM #1
How old is my unit?
I have a Williamson Temp-0-Matic unit in my basement.
On the side, there is a Williamson plate with the model number 7124-04-2003 on it. Can anyone advise what year my unit was made and what those numbers stand for, if anything?
Thanks, I am not an HVAC professional, but we have been having trouble with our unit all spring/summer and I'm trying to learn some basics so I don't look like a complete fool when I try to talk to our service man.