HVAC Repair near Loch Bain. I received a call from a homeowner who reported that their thermostat was not working properly. Upon inspection, I found that the wiring was loose and needed to be tightened. I also found that the batteries in the thermostat needed to be replaced. After tightening the wiring and replacing the batteries, I tested the thermostat to ensure it was working properly. The homeowner was pleased with my work and glad to have a functional thermostat again.