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Help Determining Age and Tonnage of AC

3477 Views 8 Replies 4 Participants Last post by  beenthere
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.
1 - 3 of 9 Posts
you're not kidding. i had a few problems with it recently that have been fixed. 32 years old and still kicking. cools down my 2400 sq ft house no problem. it is time for a new one but its nice to know i've been able to still keep this one going with very minor investment in a few new parts.
1 - 3 of 9 Posts
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