Baseboard Heater

Why Does My Heater Run Then Stop?

4 min read

Have you noticed your heater starting up and then suddenly stopping? Are you finding yourself regularly turning your heater up again and again? There are several reasons why; before we explore a few common reasons, let's first understand why heaters run and stop and some common issues that can cause this

A heater that repeatedly switches on and off is called ''short cycling''. This can be caused by a variety of issues, including; the heater may have reached abnormal temperatures. If the manual reset trips (which turns the heater off), the heater probably needs to be cleaned, as it may be blocked. The best solution is if the heater will not reset and the circuit is good, the heater will need to be repaired or replaced.

There are several factors that can lead to your heater to run and stop frequently. The most common issues are;

  1. Thermostat issues: Thermostats usually tells the temperature of the room/ area. If placed in a poor area can cause the heater to run and stop as it may be placed where the thermostat experiences temperature fluctuations like near windows, doors or a fireplace.

  2. Restricted Air flow: Your heater draws air from your home, uses the air to cycle warm air into your homes. If your vents and exhausts are blocked, this can restrict air flow creating the short cycling. Ensure to remove anything on top of vents to allow for better airflow.

  3. Dirty Air Filter: Heaters pull air before processing the heat exchanger, to ensure the heated air is clean and filtered, you have to ensure that the filter is clear to allow air through. A dirty or clogged air filter will prevent the room from getting enough air to run properly and can cause short cycling as well.

Need a replacement? Try Cadet!


Cadet offers a variety of different replacement parts as well as brand new heating systems including; wall heaters, baseboard heaters, cove heaters and more. If your heater is having serious issues and is need for a replacement, Cadets Electric Baseboard Heaters are a perfect solution:

  1. Easy to install, use and find as it is permanently installed

  2. Can accurately control your temperature with either a wall thermostat or built-in thermostat (sold separately)

  3. No multiple vents, full length baseboard meaning no vent clogs or blockages

  4. Can circulate and heat up areas up to 175 square feet

  5. No wires or cords

Electric Baseboard Heater
Electric Baseboard Heater from Cadet!

If your heater is experiencing any of the above issues, check out Cadets Electric Baseboard Heaters and replacement parts. We are here to help resolve your heating issues.