Quick answer
Turn off power. Check the thermal fuse and heating element for damage. Replace any faulty parts and ensure proper venting.
Confirm the symptom
- Dryer runs but clothes remain damp
- No heat coming from exhaust vent
- Recent lint buildup or vent blockage
- Dryer worked before but now doesn't heat
Tools and prep
- Screwdrivers (flathead and Phillips)
- Multimeter for testing continuity
- Work gloves and safety glasses
- Owner's manual for model-specific guidance
- Lint brush or vacuum for cleaning
Step-by-step troubleshooting
- Turn Off PowerDo: Unplug the dryer or turn off the circuit breaker.Observe: Dryer is completely powered down.Means: Safety first to prevent shocks.Next: Check thermal fuse
- Check Thermal FuseDo: Locate the thermal fuse (usually on the exhaust duct) and test with a multimeter.Observe: Multimeter shows no continuity.Means: Blown fuse needs replacement.Next: Replace thermal fuse
- Inspect Heating ElementDo: Remove the back panel and visually check the heating element for breaks or burns.Observe: Visible damage to the element.Means: Faulty heating element must be replaced.Next: Replace heating element
- Test High-Limit ThermostatDo: Use a multimeter to test the thermostat's continuity.Observe: No continuity indicates a failed thermostat.Means: Replace the thermostat to restore heat.Next: Replace thermostat
- Clean Vent and DrumDo: Remove lint from the drum, vent duct, and outside vent cap.Observe: Significant lint buildup was present.Means: Blocked vents can prevent proper heating.Next: Reassemble and test
- Reassemble and TestDo: Reconnect all components and restore power. Run a test cycle.Observe: Dryer heats and dries clothes properly.Means: Issue resolved with repairs.Next: Monitor performance
Common causes
| Cause | Likelihood | Difficulty | Part often needed |
|---|---|---|---|
| Blown thermal fuse Overheating or lint blockage triggers the fuse to cut power to the heating element. | Common | Easy | Thermal fuse |
| Faulty heating element Cracks or burns in the element prevent it from generating heat. | Common | Easy–Medium | Heating element |
| Failed high-limit thermostat Acts as a safety device that shuts off heat if the dryer overheats. | Sometimes | Easy | Thermostat |
| Blocked vent system Lint buildup restricts airflow, causing overheating and safety shutdowns. | Sometimes | Easy | Vent cleaning kit |
| Tripped circuit breaker Overloaded circuit or power surge may interrupt heating. | Rare | Easy | None |
| Malfunctioning timer or control board Failure to send power to the heating element during the cycle. | Rare | Hard | Control board |
Parts matching
Match your dryer model to find the correct replacement parts:
- Check the model number on the dryer's data plate
- Search online for 'dryer thermal fuse [model number]'
- Verify part compatibility with the owner's manual
- Purchase OEM or high-quality aftermarket parts
- Look for universal parts if model-specific options are unavailable
Buy a kit that includes the thermal fuse, thermostat, and heating element for common issues.
When to call a professional
- You're uncomfortable working with electrical components
- The dryer still doesn't heat after replacing all common parts
- There's a burning smell or smoke during testing
- Gas dryer shows gas leaks or ignition issues
- Vent cleaning is beyond your reach (e.g., through a wall or roof)
FAQ
Can a clogged vent cause my dryer to stop heating?
Yes, a blocked vent restricts airflow, triggering safety mechanisms like the thermal fuse to cut power to the heating element.
How often should I replace the thermal fuse?
Replace it if it's blown due to overheating. It's a one-time-use safety device and cannot be reset.
Is it safe to use a gas dryer that isn't heating?
No, a gas dryer without heat can be a fire hazard if lint builds up. Stop using it until repaired.
Can I test the heating element without removing it?
Yes, use a multimeter to test for continuity while it's installed. No continuity means it's faulty.
Why does my dryer heat intermittently?
Intermittent heating may indicate a loose connection, failing thermostat, or a partially blocked vent.