Quote:
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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SEER is a seasonally adjusted version of EER. It is a ratio of energy use to cooling.
A 14 SEER unit compared to a 13 SEER unit is ((14-13)/14)*100 more efficient, or in this case, about 7%. A 19 vs a 13 SEER would be almost 32% more efficient.