How to Tell If Your Home Thermostat Is Bad or Broken

While thermostats tend to be one of the most reliable parts of your heating and cooling system, they will wear out over time. It is important to monitor potential problems before they arise; the worst time to discover a thermostat has broken is when the temperature is rising or falling, and the HVAC system will not turn on. Pay attention to these signs.

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1. No Display Light

Most electronic thermostats have a back-lit LED display. If this display no longer lights up, or the numbers within seem blurry, it can indicate that the overall thermostat has gone bad. However, it could also be a simple wiring issue or just need new batteries. Try replacing the batteries first and see if that helps. If the thermostat still isn’t lighting up, consult with an HVAC technician to determine the cause.

2. The Thermostat Does Not Respond to Changes

One of the most common tests for homeowners is to set the temperature five degrees higher and five degrees lower than normal. If the system does not activate within a few seconds to compensate for the change, the thermostat may not register the temperature in the room. This can happen if the thermometer misreads the air, but it can also result from improper thermostat settings.

3. No Air Is Flowing

The surest sign of a malfunctioning thermostat is the increase in temperature in a home during the summer months, or the decrease in the winter months. If the ambient temperature reflects the air temperature outside, it is because the thermostat is either off or not responding to input.

Contact Complete Air Mechanical for AC Service

If the thermostat begins malfunctioning, contact the professionals at Complete Air Mechanical. The amount of voltage flowing through the system makes it dangerous for anyone to try to perform any DIY repairs, but the trained technicians at Complete Air Mechanical know exactly what to do and how to repair any potential problems.