Why is my electric radiator not getting hot?

Start with the simplest check — the fuse. Then check the thermostat setting and any timer. If these are fine, the heating element or internal thermostat may have failed.

Can electric radiators be repaired?

Some can, particularly higher-end models where replacement parts are available. Budget radiators are often not worth repairing and replacement is more cost-effective.

How do I know if the thermal cutout has tripped?

Some radiators have a reset button, usually on the back or underside. If the radiator overheated, this safety device cuts the power. Let it cool completely and press the reset button.

Low risk

Updated 30 August 2026

Electric Radiator Not Working

Your electric radiator is plugged in or hardwired but not producing any heat.

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What's happening?

Electric radiators are standalone heating units that contain a heating element and often an oil-filled or ceramic core. They may be freestanding plug-in units or wall-mounted hardwired models. When they stop working, the problem is usually electrical — a blown fuse, failed element, or faulty thermostat.

What usually causes it?

Blown fuse in the plug or fused spur
Internal thermostat fault
Failed heating element
Tripped MCB on the circuit
Faulty internal wiring or thermal cutout tripped
Electronic control board failure on smart radiators

Is it dangerous?

An electric radiator that has stopped working is not dangerous. If you notice a burning smell, unusual heat from the plug or cable, or discolouration around the socket or connection, unplug or isolate the radiator immediately.

Can I fix it myself?

Check the plug fuse (usually 13A) or the fuse in the fused spur if hardwired. Make sure the thermostat is turned up and any timer is set correctly. For plug-in models, try a different socket. Check that the radiator has not overheated and triggered an internal thermal cutout — let it cool and try again.

When should you call an electrician?

Call an electrician if the fuse blows again after replacement, if the circuit trips when the radiator is turned on, if the radiator is hardwired and you cannot check the fuse yourself, or if the problem is with a wall-mounted unit that requires removal to inspect.