Dryer running too hot or overheating

Symptoms

• Dryer shuts off before the cycle finishes
• Very hot to the touch on the outside cabinet
• Hot, stale smell in the laundry area
• Clothes come out extremely hot or slightly scorched

Likely causes

• CommonClogged or crushed exhaust ventBlocked airflow traps heat inside the dryer, tripping high-limit safety controls.
• CommonExcessive lint buildup inside the cabinetLint that bypasses the filter accumulates around the blower and heater, restricting airflow.
• PossibleFailed cycling thermostat stuck closedA stuck thermostat can let the heater run longer than it should.
• PossibleVent run too long or with too many bendsVent runs longer than manufacturer specs restrict airflow even when clean.
• PossibleBird nest or debris in the exterior vent hoodOutside vent caps can become blocked by nests or debris, especially in spring.

What to do

1. Stop the dryer immediately if it feels unusually hot or you smell burning, and unplug it.
2. Let it cool fully before inspecting.
3. Clean the lint filter and check the entire vent duct for lint buildup, kinks, or crushed sections.
4. Check the outside vent hood for nests, debris, or a flap that won't open.
5. Measure or estimate your vent run length and compare to your manual's maximum recommended length and bends.
6. Have the interior of the cabinet professionally vacuumed of built-up lint if it's been years since a deep clean.
7. If airflow is confirmed clear and overheating continues, have the thermostat and safety controls tested by a professional.

Tools and parts

• Vent brush or shop vacuum
• Screwdriver

When to call a pro

If cleaning the vent and lint trap doesn't stop the overheating, have a technician test the thermostats and safety cutoffs before using the dryer again.

Safety