Thermostats are delicate instruments, and when they experience problems, it can lead to significant HVAC system dysfunctions. Some issues can be traced back to the furnace or other components, so use the following tips to help you determine what kind of problem you’re dealing with and how you can work with an HVAC contractor to repair your malfunctioning heating and cooling system.

How to Tell If Your Thermostat Is Broken

1. It Doesn’t Hold Your Desired Temperature

If you hear your HVAC system turn on, but find that it isn’t holding the temperature you’ve set, it could be a sign that the thermostat is malfunctioning. This issue can be caused by a crooked thermostat, which will inhibit the mercury switch from working correctly.

Place a level on top of the thermostat to see if it is even and square with the wall. If the bubble in the level isn’t in the center, an HVAC contractor will need to remove and relevel the thermostat.

2. It Turns On & Off

Does your furnace consistently turn on and then shut off shortly after? This short-cycling can be caused by loose electrical connections and dirty thermostat components. Use a compressed air duster to remove any visible debris or dust. If this doesn’t work, the mechanism needs to be professionally cleaned and have its wiring inspected.

3. It Doesn't Activate the System

If your HVAC system doesn’t seem to respond at all, make sure the AC unit and furnace have power or fuel, respectively. If your thermostat runs on batteries, try replacing them with fresh ones. Loose electrical connections and dirty thermostat components can also cause your furnace to stop turning on. Have this problem remedied by calling your HVAC contractor.

In spring, temperatures can fluctuate quickly, so your HVAC system needs to be at-the-ready. For troubleshooting, repairs, and installations, contact the knowledgeable HVAC contractors at Dave’s Cooling Heating & Plumbing in Staunton, VA. This company dedicated to serving its customers with quality service and top-of-the-line products. Visit the website for a complete list of services or call (540) 886-2233 to speak with a helpful representative about your HVAC and plumbing needs.