Dryer Not Heating? Common Causes and How to Fix Them

Check the Basics First

Before assuming a part has failed, run through these quick checks: Check the circuit breaker — Electric dryers use two separate breakers (a 240V circuit). If one trips, the dryer will tumble but won't heat. Reset both breakers before calling a tech. Clean the lint trap and vent hose — A severely clogged dryer vent causes the thermal safety fuse to blow, which cuts heat. This is a fire hazard and should be addressed immediately. Check the door switch — A faulty door switch can prevent heating on some models even if the drum spins.

Blown Thermal Fuse (Most Common)

The thermal fuse is a one-time-use safety device that blows when the dryer overheats — almost always because of a clogged vent. Once blown, it cuts power to the heating element permanently until replaced. It's the most common cause of a no-heat dryer and costs $5–$20 in parts. The fix is straightforward: locate the fuse on the exhaust duct (consult your model's service manual), test it with a multimeter for continuity, and replace it if it reads open.

Important: Always clean out your vent duct completely before replacing the fuse, or the new one will blow again quickly.

Failed Heating Element (Electric Dryers)

The heating element is the coiled wire that generates heat inside the drum. Over time — typically after 8–12 years — the coil breaks or burns out. Testing requires a multimeter: a healthy element shows continuity; a failed one reads open. Replacement elements run $20–$80 depending on brand and model, and replacing one takes 30–60 minutes with basic tools.

Faulty Igniter or Gas Valve (Gas Dryers)

On gas dryers, the igniter glows red to light the burner. When it fails, you may hear clicking but get no heat. Gas valve coils can also fail, preventing gas from reaching the burner even when the igniter works. Both are relatively inexpensive repairs ($40–$120 in parts), but gas line work should always be done by a certified technician.

When to Call a Professional

If you've reset the breakers and cleared the vent and the dryer still won't heat, the repair is best handled by a technician. Accessing heating elements, gas valve coils, and control boards requires disassembling the machine, and on gas dryers, improper work creates a serious safety risk. A professional can diagnose and fix the issue in a single visit, typically for $100–$200 all-in on a thermal fuse or heating element replacement.