How to Detect a Faulty Thermostat

Every home HVAC system has a thermostat that allows the homeowner to control their home temperature. While there are many different types of thermostats out there, they all work pretty much in the same way. You either turn the dial or use digital keys to set the temperature you want a room to be. The thermostat then monitors the room's temperature and turns on the HVAC system when the temperature is not at the desired temperature that you set.