1Check the breaker
Electric dryers use a double breaker. If only one half tripped, the drum turns but there's no heat. Switch it fully off, then on.
FREE REPAIR GUIDE
Dryer Not Heating? Common Causes and Fixes
Troubleshoot a clothes dryer that runs but doesn't heat: breaker, lint and vent, thermal fuse, heating element.
DIFFICULTYMedium
ESTIMATED TIME20–60 min
TOOLSScrewdriver, nut driver, multimeter
POTENTIAL SAVINGS$100–250Labour estimate · varies
Know what you’re replacing.
If your dryer spins but stays cold, the problem is usually power, a blocked vent, or a blown thermal fuse. A clogged vent is the most common root cause — and a fire risk. Unplug the dryer (and shut off gas for gas dryers) before opening any panel.
What you’ll need.
Dryer thermal fuseMatch your dryer's model number · ~$8–15
View on Amazon →
Digital multimeterTo test fuses and the element · ~$20
View on Amazon →Dryer vent cleaning kit~$25
View on Amazon →As an Amazon Associate, RepairAI may earn from qualifying purchases. Check that parts fit your exact model before buying.
A little preparation first.
- Find the model number on the door frame or back panel.
- Electric dryers need two breakers (240V); gas dryers need gas on and power on.
- If you smell gas, don't touch the dryer or any switches: leave the house and call your gas company from outside.
One step at a time.
2Clean the lint screen and vent
Unplug the dryer (gas dryers: also close the gas valve). Clean the lint screen, then disconnect the vent hose and clear it. Reconnect it, restore power and check outside that the flap opens when the dryer runs.
3Find the thermal fuse
Unplug the dryer and remove the rear panel. The thermal fuse is a small part on the exhaust duct.
4Test with a multimeter
With the fuse removed and the dryer unplugged, set the meter to continuity. No beep means the fuse is blown — replace it with one that matches your model, and clear the vent, since a blocked vent is why fuses blow. Never bypass or jumper the fuse: it is the dryer's fire protection.
5Check the heating element
On electric dryers, with the dryer still unplugged, test the heating element coil for continuity. A break in the coil means it needs replacing. On gas dryers, leave burner, igniter and gas valve work to a technician.
Log in 
Troubleshooting
Heats briefly, then coldCycling thermostat or a restricted vent.Gas dryer clicks but no flameIgniter or gas valve coils — consider a technician.Burning smellStop using it and clean the vent and drum housing.
FAQ
How often to clean the vent?At least once a year.Is it worth repairing?Fuses and elements are cheap; repair usually beats replacement for dryers under 10 years.
General guidance only. Turn off power, water or gas before you work and follow the manufacturer’s instructions; if unsure, call a qualified professional.