A-1 Heating & Cooling is definitely an A-1 company. We called them to come and change our thermostat and when the service man came, he did far more than just change the thermostat. He went under the house and opened our vents that were closed which we didn't know were closed, then he checked our unit and found that the heating unit was about to go out. He replaced the parts and signed us up for a service agreement for $120 and saved us more than the cost of the service agreement by giving us discounts on the parts. They are highly qualified and very reliable.