They checked the furnace for a nonworking blower and it turned out to bad part switch. On Hour Heating and Air replaced the faulty part, reset the thermostat and everything worked out. They were very easy to work wit! My home is sort of hard to access with a truck, but he gladly parked around the corner and walked up. Only thing that I didn't like was the time slot. They gave us a large five hour time slot that the would be here between, but I suppose that's the nature of maintenance companies. Other than that, it was a great service and I would recommend to others.