I have been doing business with Mountain Heating & Cooling for several years now and I'm quite happy with them. When I call them for regular servicing, they always respond very quickly. They know what they're doing. Their technicians are great; they are personable and nice to have around. It's a very customer oriented company. They do everything you would want them to do. Their pricing is fair. My only complaint about them is that Steve, who did my work, but he quit. The others are really good as well, but I really liked Steve!