Had our high-efficiency forced air gas furnace and air conditioner installed a few years ago to take advantage of rebates. They reviewed our options and spelled out the benefits/drawbacks of each one, steering us toward one that fit our goals for high efficiency, and was properly sized for our house. The installers pointed out some mistakes that had been made in the installation of the old furnace, which they corrected, and how we could keep the new one running smoothly (we had been using the furnace room for storage but they encouraged us to clear it out to maximize airflow around the furnace). All staff are polite, helpful, professional and efficient. We were impressed enough that we also hire them to do annual maintenance on the units. So far haven't had any problems and always impressed with the first-class customer service.