One Hour Heating & Air Conditioning checked my electric heater. It was constantly running and wouldn't shut off, so I didn't know what the problem was. Frank came out and tested everything. He said the only thing it could be was the thermostat, so he replaced it. It turns off now when it reaches a certain temperature. I met him at my daughter's house, who was getting a new furnace with them, but this was the first time he did any work for me. I would definitely use their service again. They're very reliable and dependable. They come out when they say they will and they're very honest and open. I had a good experience.