Now that temperatures are beginning to drop, the last thing you need is a malfunctioning thermostat. Not only can a broken thermostat leave you shivering but it can result in sky-high energy bills. Here, we give you a few tips on how to tell if your home thermostat is bad and how to remedy the issue.

Signs of a Bad Thermostat in a Home

Keep in mind the following signs of a failing thermostat:

HVAC System Won’t Turn On

This is an obvious sign that something isn’t right with your thermostat. If you can’t turn on your heating or cooling system from the thermostat, it needs to be repaired immediately.

You Can’t Change Settings

When you try and make changes to the temperature on your thermostat, it should automatically respond to changes. Oftentimes, it will make a small clicking sound when changes are made, then the heating or cooling powers on. However, if you don’t hear this sound, this is a sign that your thermostat needs to be replaced.

Your HVAC System Short Cycles

Short-cycling refers to your HVAC shutting off too early or failing to complete a full heating or cooling cycle.

Thermostat Loses Programmed Settings

If you have a programmable thermostat, it should be able to maintain settings. If your thermostat keeps losing settings, this indicates that you need a replacement.

Quick Thermostat Troubleshooting


Check the Power Circuit

Is your thermostat and HVAC system receiving power? Check your HVAC equipment and the main circuit breaker box. If they have tripped, reset them and test your thermostat.

Check the Batteries

Most modern thermostats need batteries to operate. If the screen is blank, then it may need a set of fresh batteries. Other times, a failing thermostat may be the result ofbadbatteries. Change the batteries and check to see if your thermostat functions.

Change the Settings

Changes in settings may be causing the thermostat to malfunction. Make sure that the thermostat is set to provide heating or cooling. Also, be sure to set the temperature appropriate for the season. For example, if you set the temperature too high in the summer, the cooling system will not function efficiently.

Check the Location of Your Thermostat

The location of your thermostat makes all the difference. A thermostat that is in direct sunlight will sense the warm temperature and produce inaccurate temperature readings. Large holes or openings in the wall behind your thermostat will also cause your thermostat to give inaccurate readings. Be sure that your thermostat is in a location that isn’t too hot or too cold.

Thermostat Still Not Working?

If your thermostat still isn’t working after troubleshooting, it’s time to call a professional technician. Let Triad Mechanical repair your thermostat and HVAC system. We offer excellent service 24/7 all year round. 100% satisfaction is guaranteed.

Give us a call at 770-682-0075 or send us a message.