Why Does My Space Heater Keep Turning Off?

As we dive into the winter months, a reliable space heater can make all the difference.

They’re portable, convenient, and excellent at providing localized warmth.

However, it can be frustrating if your space heater keeps turning off. If you’ve ever found yourself asking, “Why does my space heater keep turning off?”, you’re not alone.

5 Reasons Why Your Space Heater Keeps Turning Off (and How to Fix)

1. Faulty Power Source

Faulty power sources like a damaged power cord or weak power supply can cause your average space heater to shut off repeatedly.

Regularly check the condition of your power cords and ensure the power outlet it’s connected to is providing a sufficient power source.

2. Circuit Breaker Trips

Modern space heaters consume a considerable amount of electricity. If other power-heavy devices are plugged into the same electrical socket, it can result in a power overload, causing the circuit breaker to trip.

This will automatically shut off the heater to prevent any electrical hazard. If your space heater trips the breaker, consider plugging it into a different circuit.

3. Safety Features

Most space heaters come with automatic safety features like tip-over protection and overheating protection.

If the heater isn’t on a level surface or if the core temperature exceeds the safe temperature range, these safety mechanisms will activate and shut off the heater.

Make sure your heater is on a flat surface and clear any dust build-up that could cause excessive heat.

4. Dirty Air Filters

Dirty or filthy air filters can obstruct airflow, causing the heating unit to overheat. If the internal temperatures rise too high, the internal sensors can trigger an automatic shut-off. Cleaning your heater’s air filters regularly can help prevent this.

5. Faulty Heating Elements

Faulty heating elements can cause inconsistent heating and frequent shutting off. If you suspect this is the issue, it’s best to call a heater service technician to inspect and repair the heating equipment.

Do Space Heaters Shut Off Automatically?

Yes, modern space heaters are designed with an automatic shut-off feature to prevent overheating and fires.

This safety device is activated when the internal components reach dangerous temperatures or if the heater is tipped over on uneven surfaces.

If your electric space heater shuts off automatically even when these conditions aren’t met, it could indicate a broken thermostat or faulty sensors.

Why Does My Space Heater Trip the Breaker?

A space heater can trip the breaker when it overloads a circuit. This usually happens when there are too many high-power devices connected to the same breaker.

When the entire breaker is overtaxed, it trips to protect your home from potential electrical fires. To avoid this, ensure your heater is connected to a circuit that can handle its power demand.

Why Does My Oil Space Heater Keep Turning Off?

An oil-based space heater might keep turning off due to several reasons – a faulty heating element, inadequate power supply, activated built-in safety shut-off, or a clogged air filter.

Regular maintenance and inspection can help identify and resolve these issues.

Why Does My Fan Heater Keep Turning Off?

Similar to other models of space heaters, fan heaters can shut off due to issues with power source, circuit breakers, activated safety features, dirty air filters, or faulty heating elements.

If the problem persists after troubleshooting these areas, contact a qualified electrician or a heater service technician.

Why Does my Electric Wall Heater Keep Shutting off?

The problems with electric wall heaters are usually similar to those of other space heaters – issues with power cables, circuit breaker trips, malfunctioning safety features, or a filthy air filter.

If these are not the issues, there might be a problem with your wall outlet or internal electrical wiring, which should be checked by a professional.

Should I Repair My Own Space Heater?

While simple maintenance like cleaning air filters or checking the power cord can be done at home, more complicated repairs involving internal components should be left to professionals.

Attempting to fix these problems without the proper knowledge and tools can lead to further damage or even safety risks, such as household fires.


Understanding why your space heater keeps turning off is the first step in resolving the issue. While some problems can be fixed at home, others require professional help.

It’s important to ensure regular maintenance of your heating appliances to keep them running efficiently and safely. Remember, a little care goes a long way in increasing the lifespan and effectiveness of your beloved space heater.

About Roy Cohen

Roy Cohen has a burning passion for heating, cooling, and ventilation. He aims to help you save money on expensive repairs and bring you the best HVAC products. He has years of experience behind him in HVAC repair and garage maintenance.

You can find Roy at his LinkedIn or his email: [email protected]

Related Posts