My Heil furnace had broken down on me a second time, but this time it was not coming on. I had no clue who to turn to and when I cracked open the furnace, I was surprised to see that the thing looked more like a computer than a furnace. I called Steve with Signature AC and he walked me through all of the potential problems I might have had. It turns out that it was just the batteries in the thermostat, but Steve was a great help, he was HONEST, and didn't try to gouge us for his HVAC expertise. We will definitely recommend this company to our friends. Thanks, Steve.