I noticed today that our thermostat was blowing warm air. The house was 76 degrees despite the thermostat being set to 73, and it was only 71 outside. I reset it from the thermostat, and it started blowing cold air again. That's wonderful it was fixed so easily, but does this signify any other lurking issue? We've lived in our home for 4 years and the thermostat was already installed. Haven't had any issues until today.
