Dryer not heating up but runs
Call for appliance repair help during posted hours on the referral page for this service.
A dryer that tumbles without heat is often a blocked vent, a tripped breaker, or a setting that never called for heat. This page covers those checks only. It does not tell you to open the back panel, test a heating element, or work on a gas valve.
Safety first: when to call a pro
Unplug the appliance or switch off its breaker before you touch settings, filters, or hoses you can reach without tools. If you smell gas, leave and call the gas utility or 911 from outside. Never open a gas appliance, refrigerant lines, or an electrical panel. Use pesticide products only as the label directs.
These checks stay on the safe side of the door: lint paths, drain filters, thermostat mode, and housekeeping. Burning smells, repeated breaker trips, gas odor, or work inside sealed panels belong to a qualified technician. Dial Home Help connects calls to independent providers and does not perform repairs.
Is the dryer set to heat and not just air dry?
Confirm the cycle includes heat and that a timed dry or damp-dry mode is not cooling the load. Some units default to air fluff after a sensor thinks the clothes are dry. Write the cycle name you used. If heat never starts on any cycle, note that before you call.
Check the control panel for air dry, eco cool, or wrinkle release modes that run the drum without heat. Switch to a normal heat cycle and run a short test with a few towels.
Is lint blocking airflow?
Clean the lint screen and check that the outdoor vent hood opens when the dryer runs. The U.S. Consumer Product Safety Commission links clogged dryer vents to fire risk. Vacuum lint from the screen housing only if you can reach it without tools. Do not operate a dryer with a crushed vent hose.
Pull the lint screen and clear the mesh. With the dryer running, look at the exterior vent flap; it should open. A packed vent path can let the drum spin while the high-limit thermostat shuts heat off.
See the CPSC dryer safety guide for vent cleaning habits. This page does not ask you to detach gas lines or open the cabinet.
Did a breaker or fuse trip?
Electric dryers often use two breakers. Reset each dry breaker once if there is no burning smell. If either trips again, leave it off. Gas dryers still need power for the drum and controls; check the outlet and breaker too. Do not bypass a tripped breaker.
Locate the dryer breaker and the main laundry circuit. Flip off, then on, once. If the drum runs but heat never returns and the vent is clear, an internal part may have failed. That diagnosis belongs on a service visit.
Steps
- Confirm a heat cycle. Avoid air-fluff or cool-down only modes.
- Clean the lint screen and check the outside vent. The flap should open while the dryer runs.
- Reset dry breakers once. Stop if a breaker trips again or you smell burning.
- Note gas smell immediately. Leave and call the gas utility or 911 from outside.
- Call if heat still never starts. Say the drum runs, the vent is clear, and which checks you tried.
Questions
Can I test the heating element myself?
No. Element and gas valve work stay inside the cabinet.
Does a running drum prove the vent is fine?
No. A blocked vent can still let the drum turn while heat stays off.