A few years ago I asked my daughter, who owns a local construction company, to recommend an HVAC person to me and she sent someone from Cota's Comfort to take a look the very old unit in my new house. The guy who came was very, very nice. We both agreed the existing unit was junk and needed replacement. So Cota's installed a new heat pump. Well, I'm from Massachusetts and don't know anything about heat pumps. I'd always had an oil furnace up north. About four years went by and the unit looked like it needed cleaning because it wasn't working as well as it used to. So I called them back to take a look. While the technician was there, I asked him how often heat pumps need cleaning and he recommended twice per year. That was news to me! I told him that this cleaning would count for the spring and I'd think about spending the money again when fall gets closer. He refused my offer to help with the cleaning, did his job, and went on his way. The next morning, it was a little chilly and I pushed the on-switch but the heat didn't go on. Cota's came right back out and diagnosed a blown fuse. It worked fine after that. The entire unit is extremely quiet and runs very smoothly. I'm very happy with it. I'll call Cota's Comfort again for another cleaning or if it needs repair.