Why Does My Furnace Keep Shutting Off?

September 15, 2017

There is always a sense of dread when you recognize something isn’t quite right with your furnace. You’re sitting at home and you notice your furnace is endlessly kicking in and shutting off. However, before you panic, there are a few things you can check when you realize your furnace seems to be shutting off a lot more than it should be.

  1. Check the air filter in your furnace—You may think that air filters are only used to help keep the indoor air cleaner, but the filters also work to keep your system clean. Your first step when you notice an issue with your system should be examining your air filter to see if it needs to be replaced. If it’s clogged or dirty, it can make it tough for air to flow over the heat exchanger.
  2. Look at your thermostat—For several of us, we may have set our thermostats weeks ago and forgot about it, even more so when using a smart or programmable thermostat. Look at your thermostat to see if anything unfamiliar is taking place or if it may need new batteries. The placement of your thermostat could make a difference, as well. If it’s located in a place that’s typically hotter than the rest of your home, such as in direct sunlight or close to another heat source, it could be falsely assuming your home reached the desired temperature.
  3. Check out your windows for proper insulation—If your home doesn’t have appropriate insulation, your furnace is likely to shut off more often. Walk around your home and check the windows to confirm they are all closed and take a look at the seals around your windows for any drafts or cold air coming into the house.

While you can certainly check for some of these issues yourself, if issues still occur after these checks, it might be time to call in the experts. When your furnace is always turning off, it can result in unnecessary work and stress on your system that could produce more costly repairs or even a replacement.

Our experts are happy to help you assess the situation and pinpoint the root of the cause, so you can enjoy the rest of the season with the optimum indoor comfort. If you have questions, call us at or use our online scheduler to conveniently request an appointment.

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