Why does my furnace keep shutting off? Published on September 15, 2017 There is always a sense of dismay when you recognize something isn’t quite right with your furnace. You’re relaxing at home and you realize your furnace is continuously kicking in and shutting off. However, before you panic, there are some things you can check when you feel like your furnace seems to be shutting off more than usual than it should be. Check the air filter in your furnace—You may think that air filters are only used to help keep the air inside your home cleaner, but they also help keep your system clean. Your first step when you recognize a problem with your system should be examining your air filter to see if it should be replaced. If it’s clogged or dirty, it can make it tough for air to flow over the heat exchanger. Look at your thermostat—For several of us, we may have set our thermostats months ago and forgot about it, particularly when using a smart or programmable thermostat. Examine your thermostat to see if anything strange is taking place or if it might need new batteries. The placement of your thermostat could make a difference, as well. If it’s located in a place that’s usually hotter than the rest of your home, such as in direct sunlight or near another heat source, it could be wrongly assuming your home is already up to the desired temperature. 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 entering into your house. While you can look at these issues yourself, if issues still persist after these checks, it might be time to call in the professionals. When your furnace is consistently turning off, it can result in unnecessary work and stress on your system that could lead to more expensive repairs or even a replacement. Our experts are happy to help you evaluate the situation and find 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 905-453-6700 or visit our online scheduler to conveniently request an appointment.