Key takeaways
- A clogged lint screen or vent is the top cause of long dry times.
- Do a hand test at the outside vent to check airflow.
- A blown thermal fuse or a failed heating element can also cause slow drying.
- Stop using the dryer if you smell burning.
A dryer that takes two cycles wastes time, money, and energy. It can also be a warning. When hot air cannot escape, heat builds up, and lint can become a fire risk.
Below are the seven usual causes and easy checks. If you smell burning or the dryer gets very hot, stop using it. For safety problems, we offer emergency and same-day dryer repair near you in Palo Alto, and you can call 24 hours a day.
Cause 1: The lint screen
Lint blocks airflow. Clean the screen after every load. Once in a while, wash the screen with warm water and a soft brush. Fabric softener sheets can leave a film that blocks the mesh, even when it looks clean.
Cause 2: The vent is clogged
Lint also collects inside the vent hose and the duct that leads outside. A long run, sharp bends, or a crushed hose makes it worse. This is the top reason for slow drying, and it is also a fire safety issue.
Run the dryer on high with a load in it. Go outside and put your hand at the vent flap. You should feel strong, steady airflow and the flap should open fully. Weak air means a clog.
Causes 3 to 7: other reasons
| Cause | Sign | Fix |
|---|---|---|
| Overloaded drum | Clothes come out wet in the middle | Dry smaller loads |
| Wet clothes from the washer | Washer spin is weak | Check the washer drain and spin |
| Failed heating element (electric) | Drum turns, no heat | Test and replace the element |
| Blown thermal fuse | Dryer runs, no heat, or will not start | Replace the fuse and clear the vent |
| Weak igniter or valve (gas) | Burner does not light | Test and replace the igniter or coils |
How often to clean the vent
Clean the vent at least once a year. Clean it more often if you dry big loads, have pets, or the vent run is long. Use a rigid or semi-rigid metal duct, not plastic foil, and keep the run as short and straight as you can.
- Unplug the dryer before you disconnect the hose.
- Do not bend or strain a gas line. Call a technician for gas dryers.
- Vacuum lint from the hose, the wall duct, and the outside flap.
- Run a test load to check the result.
Simple ways to dry clothes faster
- Use the highest spin speed on the washer, so clothes start out less wet.
- Dry similar fabrics together. Heavy towels slow down light shirts.
- Add a few dryer balls or a dry towel to help air flow.
- Shake out clothes before you load them.
- Do not overload the dryer. Clothes need room to tumble.
Dryer fire safety basics
- Clean the lint screen after every load.
- Have the vent cleaned at least once a year.
- Do not run the dryer when you leave the house or go to sleep.
- Never dry items soaked with oil, gasoline, or other flammable liquids.
- Keep the area around the dryer clear of boxes and clutter.
If your dryer smells hot or burning, stop using it and call for help.
When to call a technician
Call if the vent is clear and the dryer still runs cold, if the drum does not turn, if you smell burning, or if the dryer trips a breaker. A technician can test the fuse, the thermostat, the element or igniter, and check the vent path.
See what to expect on our dryer repair page. If your washer is the problem instead, read what to check when a washer will not drain.
If your appliance needs a professional, call us for emergency or same-day service near you in Palo Alto, 24 hours a day. Learn more on our dryer repair page, or call +1 (650) 459-7835.
Quick questions
Why does my dryer run but not dry clothes?
A clogged vent or lint screen, a failed heating part, or a blown thermal fuse are the usual causes.
How do I know if my dryer vent is clogged?
Run the dryer and check the outside vent. Weak airflow or a flap that barely opens points to a clog.
Is a hot smell from my dryer dangerous?
It can be. Stop using it and unplug it. Lint or a part may be overheating. Call for emergency service.
How often should I clean my dryer vent?
At least once a year, and more often with big loads, pets, or a long vent run.
