My heater stopped working in mid-December when it was reaching 30 degrees at night. I used Custom Cooling years ago and they seemed fair and reasonable. I called and they said it would be a $79 service charge which I agreed to. Steve came out, looked at the unit for 10 minutes and said the blower motor needed to be replaced. He wrote an estimate for $640 + I had to pay the $79 service charge. Steve said he had the part and it would take an hour. That price seemed way too high so I called around and neighbor referred me to Dave at Mountain Air. He came out and replaced the blower motor and fixed the unit for $355. I don't know what happened to Custom Cooling - maybe they sold out or got too big. My advice is to skip them altogether. I'm a single middle-aged female but I have rehabbed several houses and own rentals and I hate getting ridiculously high quotes and getting ripped off because I look like a "dumb blond".