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Originally Posted by john70t
Renting or a new home purchase?
That's an older unit, and if not cooling now, the damage may have already been done. They leak regardless especially if not run several times a year. The circulated oil conditions the seals and prevents leaks.
Not sure about the R-12 replacement costs/proceedures. All new ones use R-134A.
Look at the SEER rating label. Each number higher equals a significant improvement in efficiency. 20% or more i think. Depending on the zone and usage, replacement now will save a lot of money and discomfort.
There should be two tubes running into the house to the furnace, one hot straight from the compressor and one cooler/ambient return.
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I think your are thinking of automotive AC systems. I have never heard of a home AC unit running R-12 or 134a. It is likely R-22.
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Glen
49 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
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