Tumble dryer

Tumble dryer not heating? 4 likely causes

Heating faults on vented and condenser dryers are usually a blocked vent, a failed thermostat or element.

Symptom: Tumbles but clothes stay cold or damp · Typical cost: £70–£170.

Always switch off and unplug the appliance before inspecting it. Never work on gas appliances or fixed electrical wiring yourself — call a Gas Safe registered engineer or a qualified electrician.

Likely causes, most common first

  1. 1

    Blocked filter or vent

    DIY: easy

    Overheating trips the thermal cut-out.

    The fix:Clean the filter and vent hose.

  2. 2

    Tripped thermal cut-out / thermostat

    DIY: moderate

    Safety devices cut the heater.

    The fix:Replace the thermostats.

  3. 3

    Failed heating element

    DIY: moderate

    Burns out with age.

    The fix:Replace the element.

  4. 4

    Heat pump fault

    Engineer job

    The sealed system fails.

    The fix:Engineer diagnosis.

When to call an engineer

  • Burning smell
  • Fuse trips
  • You are not comfortable working on the appliance, or the fix involves electrics or gas.

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Frequently asked questions

How much does it cost to fix a tumble dryer problem like this?

£70–£170.

Is it safe to keep using it?

If you can see leaks, smell burning, or the appliance is tripping the electrics, stop using it and unplug it. For minor faults without those signs it is usually safe to leave it off until you can diagnose it. Always switch off and unplug the appliance before inspecting it. Never work on gas appliances or fixed electrical wiring yourself — call a Gas Safe registered engineer or a qualified electrician.