How to Stop Auto Shut Off Space Heater: A Comprehensive Guide

Space heaters are a popular choice for supplemental heating, providing targeted warmth in specific areas of a home or office. However, one common issue with these devices is the auto shut-off feature, which can be frustrating when it keeps turning off the heater unexpectedly. In this comprehensive guide, we’ll explore various techniques and technical specifications to help you effectively stop the auto shut-off feature on your space heater.

Troubleshooting the Auto Shut-Off Feature

1. Check the Circuit Breaker

If your space heater keeps turning off, it may be overloading the electrical circuit. Try plugging the heater into a different outlet or circuit breaker. If the heater continues to trip the breaker, it could indicate a defective unit, and you should consider replacing it.

To determine if the circuit is overloaded, you can use a circuit tester or multimeter to measure the voltage and amperage. The typical household circuit in the USA is 120V and either 15A or 20A. A space heater with a wattage that exceeds the circuit’s capacity can cause the breaker to trip, triggering the auto shut-off feature.

2. Adjust the Thermostat

Many space heaters come equipped with a thermostat, which can be a contributing factor to the auto shut-off feature. If the thermostat is set too high, the heater may reach its target temperature and automatically shut off to prevent overheating.

Try adjusting the thermostat to a lower setting, such as 68-72°F (20-22°C). This can help maintain a more consistent temperature and prevent the auto shut-off from activating. Keep in mind that using the space heater on a high setting, especially when other appliances are in use, can still overload the circuit and cause the breaker to trip.

3. Check the Heater’s Wattage

The wattage of a space heater is a crucial factor in determining its compatibility with the electrical circuit it’s plugged into. In the USA, typical household circuits are rated for 15A or 20A, which corresponds to a maximum wattage of 1800W and 2400W, respectively.

If your space heater’s wattage exceeds the circuit’s capacity, it can cause the breaker to trip, triggering the auto shut-off feature. Ensure that the space heater’s wattage is appropriate for the circuit it’s using, and consider using a lower-wattage model or distributing the electrical load across multiple circuits if necessary.

4. Bypass the Auto Shut-Off Feature

As a last resort, you can attempt to bypass the auto shut-off feature on your space heater. However, this should only be done by a qualified electrician, as it can be dangerous and may void the heater’s warranty.

The process typically involves locating the shut-off sensor, cutting the wires connected to it, and then twisting the wires together to bypass the sensor. This effectively disables the auto shut-off feature, but it’s crucial to ensure that the heater is still operating safely and within the circuit’s capacity.

Technical Specifications of Space Heaters

how to stop auto shut off space heater

Understanding the technical specifications of your space heater can help you determine the appropriate usage and prevent the auto shut-off feature from activating. Here are some key specifications to consider:


The wattage of a space heater indicates the amount of electrical power it consumes. Higher-wattage heaters can produce more heat but may also be more likely to overload the circuit and trigger the auto shut-off feature.


The voltage of a space heater refers to the electrical pressure it requires. In the USA, most household outlets are 120V, so it’s essential to ensure that your space heater is compatible with this voltage.


The amperage of a space heater indicates the amount of electrical current it draws. In the USA, typical receptacle circuits are rated for 15A or 20A. Exceeding the circuit’s amperage capacity can cause the breaker to trip and the auto shut-off feature to activate.

Heating Element

Space heaters can have different types of heating elements, such as ceramic, quartz, or metal. The heating element material can affect the heater’s efficiency, heat output, and safety features.


A space heater with a thermostat can help maintain a consistent temperature, which can prevent the auto shut-off feature from activating due to overheating.

Safety Features

In addition to the auto shut-off feature, space heaters may have other safety features, such as tip-over protection and a cool-touch exterior, to reduce the risk of fire and injury.

By understanding these technical specifications, you can make an informed decision about the appropriate space heater for your needs and ensure that it operates safely without triggering the auto shut-off feature.

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