I had spent only two summers in this home with a 17 year old heating and 9 year old AC system. I was NOT wanting to risk another summer with worries. Byron came to talk with me about my specific needs, as a wheelchair-bound woman with a problem thermostat that was TOO HIGH up on my wall to even see. I now can roll up to, and set the temperature EASILY from my wheelchair! The installation was done in one day, which made the process relatively pain free!