6 Common Thermostat Issues You Should Watch Out For

Published On: May 30, 20230 Comments on 6 Common Thermostat Issues You Should Watch Out ForTags: Last Updated: January 29, 20244 min read

A thermostat is one of the most vital devices in your home. It’s connected to the central heating system and regulates the overall temperature of this system based on your home’s temperature. It works by switching the heating system on or off during cold or hot temperatures. Ideally, a thermostat has two significant elements: a sensor for monitoring your home’s temperature and a switch for controlling power transmission to your heating and cooling systems.

woman checking thermostat

Sometimes, your thermostat may run into issues, making it ineffective. Understanding these problems enables you to identify them and resolve the situation immediately.

In that regard, here are six common thermostat issues you should watch out for:

1. Thermostat Losing Power

One of the major problems most homeowners face is no power to thermostat. Several issues may cause this, including:

  • Power supply: Sometimes, a power outage in your home can switch off the circuit breaker, leading to power loss to your thermostat. Therefore, the first thing to do when there’s no power to your thermostat is to confirm if the circuit breaker is on.
  • Thermostat settings: No power to the thermostat may also be due to your device’s settings. There are various choices and controls you can make with your thermostat. As a result, you can adjust the settings unknowingly. Therefore, confirm that the settings are correct.
  • Broken device: With time, your thermostat will wear out, and parts will break, affecting the power supply.
  • Dead batteries: Batteries wear out with time, die, and cease functioning. When this happens, your thermostat loses power.

Having no power on your thermostat can be annoying and prevent you from obtaining comfortable temperatures in your home. Therefore, knowing the causes of your thermostat losing control is crucial, as it lets you know the actions you can take.

2. Wiring Problems

Thermostats depend on wiring to acquire the desired power to work correctly. An issue with any wire can significantly impact your thermostat’s performance. Wiring issues can be due to the thermostat getting old or improper installation. It’s particularly true if you had an unprofessional person install your thermostat, leading to frayed or loose wiring. Inappropriate wiring can affect your system and cause safety risks.

3. Thermostat Not Reaching The Desired Temperature

In addition to losing power, your thermostat may not reach the correct temperatures to keep your home at optimal levels. Your thermostat sets up an ideal indoor temperature by adjusting accordingly to temperature changes. However, if the temperature drops or increases and your room feels the same over time, there can be a problem. One major cause of this is the location of your thermostat. For example, placing your thermostat near a window or door where it receives direct sunlight warms it up and causes it to display false readings. As such, your device may think your room is hot and switch off the heater before reaching the set temperature.

man tweaking thermostat

4. Dirt And Debris Accumulation

With time, dust and other particles can accumulate inside, affecting its functionality. Ideally, dirt and debris buildup impacts particular parts, like the measuring tools, which can result in incorrect temperature readings. It, in turn, leads to your heater or air conditioner (AC) constantly running, leading to high energy usage. To mitigate this issue, perform regular cleaning and maintenance. You can achieve this by gently removing your thermostat’s plastic casing with a screwdriver and using a dry cotton swab to clean the insides.

5. Sensor Problems

A malfunctioning sensor may result in your system cycling constantly or failing to turn on completely. In such cases, you may experience a sudden change in your home’s indoor temperature, making it very uncomfortable. One cause of ineffective sensors is a faulty thermostat. Furthermore, it may be due to displaced sensors. When the sensors dislodge from their ideal position, they may be unable to measure the ambient air accurately. That way, they can’t provide adequate heating and cooling for your home.

6. Irregular Temperatures Around Your Home

A properly functioning thermostat offers a regular spread of cozy temperatures throughout your home. However, when there’s something wrong with it, it may turn your heater and air conditioner on and off at the wrong times. As a result, hot and cold spots may appear in your house. Some differences may be due to some parts of your rooms receiving more outside heat, but the variation should be manageable.


Maintaining optimum temperatures in your home is vital for your comfort and overall health. A properly working thermostat can help you achieve this. However, this device may sometimes run into problems that affect its effectiveness. Therefore, knowing such issues is essential. It enables you to quickly identify the cause of its malfunction and make the necessary corrections to keep your home’s temperature comfortable year-round.

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