No Power To Thermostat? 5 Reasons And Solutions

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Having trouble keeping your home at the most convenient temperature? We understand it’s your thermostat taking a toll!

Having no power to your thermostat is quite frustrating. Imagine experiencing a perfectly set weekend running behind improving the electronic capacity of your thermostat. Diagnosing the problem of a thermostat is sometimes a complicated task. It’s important to pinpoint the issue at the very beginning, and you can do it yourself instead of calling a professional.

With winter conditions ramping up, a broken thermostat may be an issue that should not be left unforeseen. Your thermostat, along with the HVAC system, should work perfectly and efficiently. The central heating system of your home may suffer due to a broken thermostat. There are several reasons why your thermostat may not be driving the power it requires. Let’s take a look below!

gray Nest thermostat displaying at 63
Photo by Dan Lefebvre on Unsplash

No Power To Thermostat – Here’s Why!

If you realize your thermostat is not on power, make sure to check if it has been turned on. Sounds funny, I know. Most of the time, people are surprised to learn that the main problem is switching on the thermostat instead of a technical glitch. People accidentally turn the thermostat off and report problems with professionals. Instead of going haywire and spending time on consultation, if you are familiar with the process of turning on the thermostat, make sure to switch it on. For best results, you can also read the owner’s manual that comes along with the thermostat and make sure that the temperature is under control and your room is heating/cooling up efficiently.

Check For The Below Points To Ensure Your Thermostat Has Power


If you have a thermostat that runs on battery, try replacing their existing batteries with new ones.

Thermostats are so general that people often forget the last time they used a fresh battery. It’s best to replace batteries every 4 to 6 months.

You can also mark the time of daylight savings to take a hint that your thermostat batteries may soon fade, given that the time is over or the daylight savings time is yet to start.

A Clean Thermostat Is Essential

The thermostat can accumulate dust, which can prevent proper functioning. If you have smokers or you often use incense sticks, it can even make the situation worse. Removing the thermostat cover to clean the interiors is an easy task. If you find dust appearing on the thermostat’s internals, carefully remove the debris and try powering it on again. 80% of the time, the thermostat works properly once the thermostat is clean.

Circuit Breaker

Obviously, the electrical system of your house runs the thermostat if it is not on battery. Sometimes the entire electrical system may face the issue because of which the thermostat may not be deriving ample power.

While you check for the circuit breaker, make sure that the breaker powering your thermostat is switched on.

Electrical tripping is a common phenomenon. If the break up powering your thermostat has tripped, you can always try resetting it.

Sump Pump

The electrical system of your house may also have an outlet where a sump pump is plugged. Sump pump tripping is common but not regular.

Try flipping the outlet switch and check if the thermostat gets his power back. Many homeowners have reported this problem to be a common one.

However, if you are not sure how to flip the switch of an outlet, make sure to take a professional’s advice instead of doing it yourself.

Often electrical systems not having a sump pump have the HVAC equipment plugged into a separate outlet. It’s possible for the HVAC outlet facing electrical tripping. You can turn the switch on or take the help of an electrician.

A Frozen Thermostat

That’s correct. A thermostat can freeze as well. Today’s thermostats are usually digital, with smart technologies. You may often experience issues with the touch screen or a problem with the static electricity. The thermostat display may freeze and stop sending data updates that you need to look for on the screen. This can restrict the thermostat’s temperature, and when it does, it’s best to reboot the thermostat device.

Keep it off for several seconds. Give it a break of 10 to 15 minutes and try switching it on and check what happens. Almost 89% of the time, the thermostat may start working, and if it doesn’t, it’s best to take the help of a professional.

No Power To Thermostat – Is the Fan Responsible?

beige Centurion home appliance controller on wall
Photo by Will Malott on Unsplash

This is another reason why your thermostat may not be working. The relation of fan and furnace is important to ensure your thermostat is working perfectly fine. This is because of the warm air it pumps. As a solution, it’s best to switch off the fan minutes after you switch off the furnace. If the fan is kept on, there is a possibility cold air will be pumped throughout. This will break the warm air balance in the process, and you may find it uncomfortable to sit around when you need warm temperatures.

Often users have also reported issues where the size of the thermostat turned out to be a major factor. Ensure to buy the thermostat as per your home requirement. The size of the thermostat may not cover up a small area or a larger one for that matter. As a solution, ensure fitting a thermostat that can comfort your apartment. If you cannot find facts that fit in your need, get professional advice.


To Summarize

Finally, some reasons of longevity, anticipator settings, and the wiring can also be factors determining a thermostat’s working. It should be a priority to regularly check the thermostat’s working, not when it is out of power. If you have used the thermostat for quite some time, it might have died for old age. The wiring of a thermostat largely decides its activity. Too much wiring may block an operator and restrict power.

Usually, a thermostat should be replaced every 6 to 8 years. You can troubleshoot some of the common problems yourself. However, if you are afraid of electrical operations or not sure what can be done, it’s best to help a professional.

These are just basic tips so that you can take a hand yourself before you call a local maintenance specialist. Make sure you are careful with electrical appliances because getting electrocuted in repairing is not something you will be looking for.

Thank you for reading!

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