At my last couple of jobs, we used Pro-Tech Heating and Cooling as contractors, which is how I found out about them. That was a major factor in deciding to use them for our home as well. We used them to replace our furnace, water heater and AC unit and everything turned out as well as we had hoped. We just replaced them a few months ago so we haven't had a need to call them for servicing yet, but we will be contacting them in the future with any service needs that come up. I think they were a good choice. we looked at 3-4 other companies and they were the best price. They were easy to work with and the installers were all very helpful.