I have been using American Comfort Heating & Cooling for a long time now, and I am very happy with their work. My only complaint is that they never call to schedule the maintenance work we signed up for, I have to do that myself. It was practically July when I realized I would have to call. But, when I do and they come out here, they do a very good job. The technician checked our units and everything, making sure everything ran well. He was professional and friendly. They always do a good job, so I will definitely continue using their services.