Dryer Not Heating? Here's the Troubleshooting Checklist Every Homeowner Needs

Your dryer tumbles. Air moves. But after an hour your jeans are still damp. Sound familiar?

A dryer that runs but doesn't heat is one of the most common appliance complaints, and one of the easiest to fix yourself. Let's walk through it.

Check #1: The Lint Trap (Yes, Really)

You clean the lint screen. Good. But when's the last time you cleaned inside the lint trap housing?

Grab a vacuum with a crevice attachment and suck out the lint that's collected below where the screen sits. Then go outside and check your dryer vent exit. If lint is caked around it, your airflow is choked and heat can't do its job.

This is the #1 cause. It's free to fix and takes 10 minutes. (If your LG is showing the D80 code, that's a vent blockage warning — same root cause.)

Check #2: The Circuit Breaker (Sneaky One)

Electric dryers use a 240-volt double breaker. Here's the sneaky part — one side can trip while the other stays on. Result: the motor runs, the drum turns, but the heating element gets no power.

Go to your breaker panel. Flip the dryer breaker fully OFF, then fully ON. If it trips again immediately, you've got a wiring issue — call an electrician.

Check #3: Gas Supply (Gas Dryers Only)

If you have a gas dryer, check the gas valve behind or beside the unit. It should be parallel to the gas line (open). Perpendicular = closed. It's surprisingly common for these to get bumped shut when someone moves the dryer to clean behind it.

Check #4: The Thermal Fuse

Every dryer has a thermal fuse — a one-time safety device that blows if the dryer overheats. Once it blows, the heater won't fire.

The fix:

1. Unplug the dryer.
2. Remove the back panel (usually 4-6 screws).
3. Find the thermal fuse — it's a small white or silver oval, usually near the exhaust duct or heating element.
4. Test it with a multimeter set to continuity. No beep = blown fuse.
5. Replace it ($5-12 on Amazon, takes 15 minutes).

Important: If the thermal fuse blew, it blew for a reason. Clean your vent system thoroughly or the new fuse will blow too.

Check #5: The Heating Element

If you've cleared checks 1-4, the heating element itself might be burned out. You can test this with a multimeter too — look for the coil assembly inside the heater housing. No continuity = dead element.

Replacement elements run $20-50 depending on your model. It's a very doable DIY if you're comfortable with basic tools.

The Quick Summary

Check	Time	Cost
Lint / vent blockage	10 min	Free
Double breaker	2 min	Free
Gas valve	1 min	Free
Thermal fuse	20 min	$5-12
Heating element	30 min	$20-50