A dryer that runs but won't heat usually has a blown thermal fuse, a burned-out heating element (electric), or a weak igniter or bad gas valve coils (gas). A clogged vent is often what caused the part to fail. Clean the lint screen and check the vent first, then call a technician.
Why Dryers Stop Heating
Blown thermal fuse
This safety fuse blows when the dryer overheats. A clogged vent is the most common reason it overheats.
Burned-out heating element
Electric dryers use a coil element. It can break after years of use or from poor airflow.
Tripped breaker
Electric dryers use a double breaker. If half trips, the drum may turn but the heat won't work.
Weak gas igniter
Gas dryers use an igniter that glows to light the gas. A weak one can't open the gas valve.
Bad gas valve coils or flame sensor
These parts control the gas flow. If they fail, the burner won't stay lit.
Faulty thermostat
Cycling or high-limit thermostats can fail and stop the heat.
The Dryer Vent Connection
Most no-heat problems start with poor airflow. Lint builds up in the vent, heat gets trapped, and the thermal fuse blows to protect the dryer. If you just replace the fuse without clearing the vent, it often blows again.
Many Apex homes have second-floor laundry rooms with long vents to the roof. These clog faster. Our dryer vent cleaning service clears the full run.
Dryer Heat Checks You Can Do
- Clean the lint screen and wash it with soap if it looks clogged.
- Check your breaker panel. Reset the dryer breaker fully off, then on.
- Go outside and run the dryer. Feel the vent. You should feel strong, warm air.
- Pull the dryer out and make sure the duct behind it isn't crushed.
- For gas dryers, make sure the gas valve behind the dryer is open.
Warning Signs to Stop Using the Dryer
- A burning smell.
- The dryer cabinet feels very hot.
- Clothes are hot but still damp.
- Lint is piling up around the outside vent flap.
Lint is very flammable. If you notice these signs, stop using the dryer and get the vent cleaned before you run it again.
When to Call for Dryer Repair
Call a technician if the dryer still won't heat after these checks, or if you have a gas dryer that won't light. We test each heating part and fix the airflow problem that caused it. Learn more on our dryer repair page.
Cold dryer? We'll fix the heat and the cause.
Our techs repair gas and electric dryers across Apex and check the vent on every visit.
We also serve appliance repair in Bella Casa, appliance repair in Friendship Station, appliance repair in Fuquay-Varina and areas we serve across the Triangle. See all appliance repair services and brands we repair.