What Are The Signs Of A Bad Thermostat?

A Google Nest thermostat attached to a wall.Heating and cooling systems are essential equipment in our homes, protecting us from harsh weather. Many times, our HVAC systems can stop working for various reasons. Before calling for furnace repair services, checking your thermostat might be a good idea. The thermostat is a key component of HVAC systems. If there’s a problem with the thermostat, your heating and cooling systems won’t work properly.

Common Telltale Signs It’s Time to Repair or Replace Your Thermostat:

  1. Your HVAC System Cycles On and Off Frequently
    The thermostat controls your home’s temperature by sending commands to the furnace or air conditioner. If your thermostat causes your HVAC system to cycle on and off frequently, or if your HVAC system doesn’t respond correctly to the thermostat, the thermostat is likely malfunctioning. Frequent cycling might occur due to issues with the wired connection or if the wires become frayed.
  2. Inaccurate Temperature Readings
    The thermostat contains a sensor that detects your home’s temperature and adjusts the system accordingly. You can verify the accuracy of the readings by comparing them to an indoor thermometer.
  3. Frequent Shifts in Temperature
    Your thermostat is designed to maintain your desired temperature. However, if you experience frequent, unexplained temperature changes in your home, your thermostat could be the problem. A faulty thermostat may cause constant fluctuations in temperature without an obvious cause.
  4. The Thermostat is Unresponsive to Changed Setting Changes
    When you adjust the settings on your thermostat, the system should respond immediately, often with a clicking sound. If your HVAC system does not react when you change the thermostat settings, it may be time to replace your thermostat.
  5. The Settings Reprogram Themselves
    Some thermostats have programmable functions that allow them to maintain specific settings over time. If the settings on your programmable thermostat change frequently on their own, you may need to have it inspected by a professional.
  6. A Blank Screen
    If your thermostat’s screen is blank and unresponsive, it could indicate a power issue, faulty wiring, or a complete unit failure.

If you know your thermostat is old, you might consider replacing it proactively before any of these problems arise. Many newer thermostats with advanced technologies are available on the market. You can troubleshoot a potentially faulty thermostat using the tips provided below.

Troubleshooting Tips:

  • Check the temperature settings on your thermostat and ensure you haven’t made a mistake when adjusting them.
  • Replace the batteries in your thermostat and check if it functions correctly with new batteries.
  • There might be an issue with the electrical circuit connected to your thermostat. You can try resetting your home’s circuit breaker by flipping the switch off and then turning it back on.
  • Check if your thermostat needs to be calibrated, as improper calibration can lead to inaccurate temperature readings and system cycling issues.
  • If you don’t find any problems with the thermostat after trying these steps, it may indicate that your HVAC system requires attention or even replacement. See our furnace installation services for more details.

Kawartha Eco Climate Control is one of the best HVAC companies in the Peterborough area. We provide installation, heating, and maintenance services of HVAC appliances to residential, light commercial, and new construction clients. Visit our website to schedule an appointment and view our financing plans. You can also contact us at (705) 868-8246.