I have had expensive problems with mine since it was 6 months old. I'm getting rid of it and going geothermal. I've already spent as much in uncovered repairs and out of sight electric bills as the heat pump and new electrical was at installation. They didn't stand behind the unit I bought. It's had every part replaced at least once. I could have had geothermal from the git-go and had it paid off by now instead of starting all over.