Dryer Not Heating? Vent, Element, Fuse and Igniter Checks
Dryer not heating? Check the breaker, clogged vent, thermal fuse, heating element or gas igniter, with safe steps and clear signs of when to call a technician.
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Dryer not heating most often comes from a clogged vent, a tripped breaker, a blown thermal fuse, a failed heating element on an electric dryer, or a worn igniter on a gas dryer. Start with the free checks: the breaker, the lint trap and the vent.
Unplug the dryer before opening any panel, and shut off the gas supply before touching a gas model.
Dryer not heating: the quick answer
If the drum turns but the air stays cold, the blower and motor work and the heating system does not. On an electric dryer that points to the breaker, thermal fuse, thermostat or element. On a gas dryer it points to the igniter, flame sensor or gas supply. A blocked vent can also trip safety devices that cut the heat.
| Quick facts: dryer not heating | |
|---|---|
| Time needed | 15 minutes for checks; 1 to 2 hours for a part swap |
| Tools | Multimeter, screwdriver, nut driver, vacuum |
| Difficulty | Easy to moderate; parts testing needs care |
| Safety | Unplug the dryer; shut off the gas valve on a gas model |
Free checks first
- Check the breaker. Electric dryers use a double breaker. If one half has tripped, the drum runs on one leg but the heater does not work.
- Clean the lint trap and look at the trap housing for lint build-up.
- Check the vent. Disconnect the vent hose and see whether air flows. A crushed or clogged vent causes overheating and trips the thermal fuse.
- Check the cycle and setting. A delicate or air-fluff setting uses no heat.
- Test with a small load. An overloaded drum may seem not to heat.
Which part has failed
| Dryer type | Likely failed part | What happens |
|---|---|---|
| Electric | Thermal fuse | Dryer may run but not heat, or not start at all |
| Electric | Heating element | The coil is broken; air is cold |
| Electric | Thermostat or high-limit | Heat cycles off too early or never on |
| Gas | Igniter | No glow, so the gas does not light |
| Gas | Flame sensor or gas valve coils | Burner clicks but will not stay lit |
| Either | Clogged vent | Overheats, trips safety devices |
Electric dryer checks
With the dryer unplugged, a multimeter on the continuity setting can test the thermal fuse, thermostat and heating element. A fuse or element with no continuity has failed and should be replaced with a part that matches the model. If you are not comfortable testing electrical parts, ask a technician.
Gas dryer checks
Make sure the gas valve behind the dryer is open and that other gas appliances work. A gas dryer should glow and then light. If you smell gas, do not run the dryer: leave the house and call the gas utility. Igniters weaken with age and are a common failure, but gas parts should be replaced by a qualified technician.
Why the vent matters
A clogged vent traps heat in the drum, which trips the thermal fuse or high-limit thermostat and is also a fire risk. If your dryer not heating problem keeps coming back after a new fuse, the vent is almost always the cause. Clean the vent whole run, not just the hose behind the dryer.
When to call a professional
Call if the fuse blows again, if you smell burning or gas, if you see melted wiring, or if you are not comfortable working with electricity or gas. A technician can test the parts and clear the vent safely.
Preventing the next failure
Clean the lint trap after every load, clear the vent at least once a year, avoid overloading, and do not run the dryer with a crushed vent behind it.
Dryer not heating: checks for the heat circuit
A dryer not heating can still tumble and look fine, which makes the fault easy to miss. On an electric dryer, the heating element and the thermal fuse are the parts that stop the heat. On a gas dryer, the igniter and gas valve must work before the burner lights. Check that the dryer is receiving its full power: an electric dryer that has lost one leg of its 240-volt supply may run but make little heat.
Clean the lint filter, the drum vent and the outside exhaust before testing parts. A blocked vent can trigger the thermal fuse and cut the heat even though the rest of the dryer works. If the dryer not heating problem returns after cleaning, a technician can test the element, the fuse and the thermostat with a meter.
If your dryer not heating problem started after a move, check the vent connection and the outlet.
Related reading
- How to Clean a Dryer Vent: Step-by-Step and Fire Warning Signs
- Dryer Making Loud Noise? Squeal, Thump, Rattle and Grind Fixes
- Dryer Smells Like Burning? What to Do Right Away
- Dryer Won't Start? Power, Door Switch, Fuse and Motor Checks
Browse all appliance repair guides, or find an appliance repair technician in your city from the appliance repair directory.
Frequently asked questions
Why is my dryer running but not heating?
On an electric dryer, a tripped breaker, blown thermal fuse, failed element or bad thermostat is typical. On a gas dryer, a worn igniter, a faulty flame sensor or a closed gas valve is more likely. A clogged vent can cause several of these.
How do I know if my dryer thermal fuse is blown?
With the dryer unplugged, test the fuse with a multimeter on continuity. No continuity means it has blown. A fuse usually blows because the vent is blocked, so clear the vent as well as replacing the fuse.
Can a clogged dryer vent stop the dryer from heating?
Yes. A blocked vent traps hot air, which trips the thermal fuse or high-limit thermostat and cuts the heat. It also wastes energy and is a fire risk, so clean the whole vent run.
Why is my electric dryer spinning but not heating?
Often one leg of the double breaker has tripped, so the motor runs but the heater does not get power. Check the breaker first, then the thermal fuse, thermostat and heating element, in that order.
Is it safe to repair a gas dryer myself?
Only the simple checks. Make sure the gas valve is open, and clean the vent. Replacing the igniter, valve coils or sensor involves gas, so a qualified technician should do it, especially if you smell gas.
How do I test a dryer heating element?
Unplug the dryer, disconnect the wires from the element, and touch the multimeter probes to the terminals on the continuity or ohms setting. No continuity means the coil is broken. Replace it with an exact match.
Why is my gas dryer not heating even though it tumbles?
The igniter may be worn and not glowing, the flame sensor or valve coils may have failed, or the gas supply may be off. If the igniter glows but the burner does not light, a technician should inspect the valve.
When should I call a technician for a dryer not heating?
Call if a new fuse or element fails again, if you smell burning or gas, if wiring looks damaged, or if you are not comfortable with electrical or gas parts. The vent also needs clearing in many cases.
How long does a dryer normally take to dry a load?
Usually 40 to 60 minutes for a normal load. If drying takes much longer, check the lint screen and vent for restricted airflow before assuming a heating fault. A hot dryer that still leaves clothes damp points to airflow, while a cool drum points to a heating fault.
Can a tripped breaker cause my electric dryer not to heat?
Yes. Electric dryers use two breakers, and if one trips the drum may spin with no heat. Reset the double breaker fully and test again. If it keeps tripping, stop using the dryer and call an electrician or technician, because a short or failed element can be the cause.
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