Our 1000 sq ft condo is heated and cooled by a 1.5 ton heat pump.
It's an American Standard Heritage unit, about 20 years old.
In Boston's cold winter this year, the outdoor unit started to make a screeching sound, usually when it had just started to run, or maybe when it was shutting down. It produced heat just fine, although our bills seemed somewhat higher than normal.
As Murphy's law would have it, it stopped screeching earlier in the week (maybe because of warmer temperatures?) but we couldn't get a heating guy in until today.
The fan runs smoothly without screeching. So the technician tells me that the problem must be in the compressor, and that the compressor will need to be replaced.
Does that sound accurate? Any chance this is fixable without changing the whole compressor? Money is tight and we are not planning to live here more than four more years.