Is your thermostat sending mixed signals to your furnace or AC? In these cold temperatures in St. Charles and St. Louis, your thermostat’s primary job is to communicate temperature readings and instructions to your HVAC unit. You may have a faulty thermostat if your HVAC unit keeps randomly turning on or off.
A thermostat that’s gone bad will start to send bad or incorrect information to your unit. A faulty thermostat will start to send bad information, causing your unit to turn on or off at inappropriate times. ...










