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Proudly Serving the Puget Sound Area Since 1977

Help! My Heater Keeps Turning On and Off!

When we are in the midst of the coldest weather of the year, the last thing that you want is to realize that your heater is not working precisely as it ought to. Unfortunately, there truly is no such thing as a 100% reliable heating system. If you notice trouble with your heater, you should call us right away to have the problem professionally resolved.

Short cycling is a problem that many homeowners encounter with their heaters in Snohomish, WA. This is when a heater starts up, but does not run for a full cycle before shutting back down. There are a few different reasons as to why you may encounter short cycling with your heater.

Dirty Air Filters

We’ve advised you in the past about just how vital it is to keep a clean air filter in your HVAC system. If you use a forced air heating system, be it a furnace or a heat pump, a dirty air filter really can cause a number of serious problems. While your air filter will be changed during routine maintenance by your technician, it is up to you to ensure that it is changed as needed between visits. Otherwise, heat can be trapped in the system, causing it to overheat, shut down, and short cycle.

Malfunctioning Components

Your thermostat is responsible for regulating the operation of your heater and for reading temperatures in your home. That’s how your system knows when to come on and shut off. Heaters also have limit switches, thermocouples, and other devices designed to protect your safety and the condition of the heater. If any of these components should malfunction, they can cause the heater to short cycle.

Improper Size

This last one is a bit of a worst case scenario. If your heater is just too big for your home, then it can bring temperatures up too quickly. That may not sound like that big of a problem. However, it leads to the interruption of the heating cycle, and that puts a lot of wear and tear on your system. It also drives up energy costs even as your comfort suffers.

If your heater is short cycling, schedule service with the heating pros here at G & S Heating Cooling & Electric.

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