My problem is all too common this time of year. Our Heil single stage SEER
13 AC unit began making a buzzing sound when the compressor runs and now fails to cool the house. A tech looked at it last night and says that the compressor is bleeding over and needs to be replaced. It's in warranty, but still would cost about $1200 over the warranty. The company sells Lennox and also has access to Amana. If I replace the old unit with the broken compressor, I'd probably want to go to a high SEER unit, since we cool about 9 months of the year here in our state. The furnace is almost never used, but is used more for its fan to circulate the cooled air. They said that with the new high SEER units, they have to replace it all, including the furnace.For you HVAC people out there, could the problem be caused by a bad filter/dryer? If so, would replacing it stop the compressor from bleeding over and give it more life? Would you recommend the Amana or Lennox replacement. I see Lennox is up to SEER 21, but Amana tops out at SEER 16. What are the pros and cons?
Is there a way to just replace the single speed fan in an existing furnace with a variable speed one from the AC manufacturer? I really don't want or need a condensing furnace here in the desert.
Are the electrostatic air filters worthwhile? My ceiling filters for this unit are 22' up on the ceiling, which makes me long for one on the furnace to eliminate ladder work changing them out.