A dryer that runs but won't heat is one of the most common appliance issues we see. The good news: the cause is almost always identifiable, and in most cases repairable in a single visit. Here's what to look for.

Most Likely Causes

Blown thermal fuse - This safety device cuts out when the dryer overheats. Once blown, the drum keeps spinning but produces zero heat. Always caused by something else - usually a clogged vent.
Clogged dryer vent - The number one cause of thermal fuse failure and dryer fires. If your vent hasn't been cleaned in over a year, start here.
Failed heating element (electric dryers) - The coiled element that generates heat burns out over time. No element, no heat.
Defective gas valve coils (gas dryers) - These coils open the gas valve for ignition. When they fail, the igniter may glow but the burner won't light.
Tripped circuit breaker (electric dryers) - Electric dryers use a 240V circuit. If one leg trips, the drum spins while the heater gets no power.

Quick Checks Before Calling

Reset your circuit breaker. Clean the lint trap. Inspect the exhaust vent outside - the flap should open freely when the dryer runs. Check the vent hose behind the unit for kinks. Confirm the dryer is set to a heated cycle and not air-only.

When to Call a Professional

If your dryer still won't heat after the checks above, it's time for a technician - especially for gas dryers, which involve gas connections that must be handled by a certified professional.

Dryer Not Heating? Here's What Might Be Wrong

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