Randy and his crew came highly recommended and did not disappoint. Randy, Perrin, and their crew were prompt, courteous, and professional. The three-man crew who did the installation removed the old furnace without cutting into our walls, and I really appreciate how considerate they were with our property. Also, Greg took the time to explain the system and the thermostat, and when it did not respond to programming, he returned promptly to make certain it worked. I can't thank them enough for the installation, and I will highly recommend them without reservation. Thanks again!