When our heater broke, we called R A Dobson Incorporated. After three visits and several days without heat they were able to fix our heater. The first visit the charged us 348.00 for a bad defrost board, they reset the heater and said it was fixed. Well right after they left we noticed it wasn't working again. We called them and they came back a couple days later and said all the wiring for the system was shot and they replaced it for $95.00, and just like before it stopped working again. So they came back two days later and finally found the real problem (it was a short to the pressure switch). They fixed it and all has been well so far. They also sent us a refund for the two previous visits. So overall, they fixed it and even refunded the amounts for the other two visits. So I would more than likely call them again if I need a repair.