I base this review solely on customer service. I had one of their mechanics come in and assess the job. He told me I needed a new fan motor. He told me that he would order the piece for me and it would show up on Monday (It was Saturday at the time). He was nice enough to clean the fan for me and have my furnace working temporarily while the piece was meant to arrive. 2 WEEKS later I get a call asking if I want the fan installed. I was a little reluctant to have it installed because my fan was back to working fine. The administrative lady convinced me to do it because they had the part on hand. She did leave out the part that the motor was going to cost me 847$. A mere mention of the cost would have been courteous. 850$ is a lot of money, perhaps a small heads up that I was going to get smacked in the face with a 1100$ after Christmas would have been nice!!!