Why is my panel heater not working?

Check the fuse first — this is the most common and cheapest fix. Then check the thermostat setting and any timer. If these are fine, the element or thermostat may have failed internally.

How long do panel heaters last?

A good quality panel heater should last 10-15 years. Budget models from DIY stores may last only 3-5 years before the element or thermostat fails.

Is it worth repairing or replacing?

Compare the heater's age, warranty, fault, parts availability, and repair quote with the price and expected life of a suitable replacement.

Low risk

Updated 30 August 2026

Panel Heater Not Working

Your wall-mounted or freestanding panel heater is not producing any heat.

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What's happening?

Panel heaters are slim electric heaters that use convection to heat a room. They can be wall-mounted or freestanding and are popular in flats and rented accommodation. When a panel heater stops working, the cause is usually a simple electrical issue such as a blown fuse or thermostat fault.

What usually causes it?

Blown fuse in the plug or fused spur
Internal thermostat fault
Failed heating element
Loose wiring connection at the terminal block
Electronic programmer or timer fault
Internal thermal cutout has tripped due to overheating

Is it dangerous?

A panel heater that has stopped working is not dangerous. If you notice a burning smell, discolouration on the cable or plug, or the heater was making unusual sounds before failing, switch it off and do not use it until checked.

Can I fix it myself?

Check and replace the plug fuse (usually 13A). Ensure the thermostat is turned up and any timer is active. For freestanding models, try a different socket. Check that nothing is blocking the heater's air intake or outlet (at the bottom and top) as overheating can trigger the thermal cutout. Let it cool and try again.

When should you call an electrician?

Call an electrician if the fuse blows again, if the circuit trips when the heater is turned on, if the heater is hardwired and you cannot check the fuse, or if simple checks have not resolved the issue.