Help Determining Age and Tonnage of AC

3476 Views 8 Replies 4 Participants Last post by beenthere, Jun 4, 2011

frankleibo

Discussion Starter · Jun 3, 2011

Hello,
Have old GE unit likely original to the home. House was built in 1978. I am trying to determine the age and tonnage of this system. The current coding conventions that I can find online do not apply to this system. Perhaps someone who has access to Preston Guide or a significant amount of experience can chime in.

Model # BTB936A100B2
S/N 250542922 (thinking this is 22nd week of 1979 but maybe not)

Any help would be appreciated.

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beenthere

· #6 · Jun 3, 2011

hvactech126 said:
its a 3 ton unit

Yep, and built like a tank. They don't make new A/Cs as reliable as them anymore.

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beenthere

· #9 · Jun 4, 2011

gregzoll said:
Actually they do, it is all about maintaining them. There are some out there that are over 40 years old still going strong.

Most of those GE's that I see(yep still fromthe 70's), have only ever been looked at when they stopped working(bad contactor, relay, etc) no annual maintanence. they just last. And you won't find a new residential that will last like that with maintainence.

Those GE's were built when things were made to last. Today, things are made with planned obsolescence in mind.

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