If your dryer takes longer to dry, check airflow first. The usual causes are a clogged lint screen, lint in the vent duct, a crushed hose, a stuck exterior flap, overloading, clothes leaving the washer too wet, or a dirty moisture sensor.
Start with these checks
- Clean the lint screen before the next load.
- Check whether water beads on the lint screen, which can mean residue buildup.
- Run the dryer and confirm the exterior vent flap opens strongly.
- Look behind the dryer for a crushed or kinked transition duct.
- Try a smaller load.
- Check whether the washer spin cycle is leaving clothes unusually wet.
- Clean the moisture sensor if your dryer has one.
- Call for repair if airflow is good but heat or tumbling is wrong.
Clean the lint screen
Clean the lint screen every load. If dryer sheet residue is coating the mesh, water may bead on it instead of passing through. Wash it gently with warm water and dish soap, dry it fully, then reinstall it.
A blocked screen reduces airflow inside the dryer. Less airflow means moisture leaves slowly even if the dryer is heating.
Check the vent duct
The vent duct carries damp air outside. If lint builds up in the duct, clothes can feel hot but still damp. Go outside while the dryer runs and check whether the flap opens and airflow feels steady.
If airflow is weak outside, check the transition duct behind the dryer and the exterior hood. If the duct run is long, hidden, or hard to access, schedule proper cleaning.
Look behind the dryer
A flexible transition hose can get crushed when the dryer is pushed back. A sharp bend can restrict airflow almost as much as lint buildup.
Pull the dryer out carefully. Replace damaged plastic or foil duct with rigid or semi rigid metal duct where possible. Keep the path short and smooth.
Check the load and washer spin
Overloaded dryers do not tumble well, so air cannot move through fabric. Split the load and see if drying improves.
If clothes leave the washer heavier than usual, the dryer may not be the real problem. A weak spin cycle, overloaded washer, or drain issue can send clothes into the dryer too wet.
Clean the moisture sensor
Many dryers use sensor bars inside the drum to decide when clothes are dry. Residue from dryer sheets or fabric softener can make sensing less accurate. Wipe the sensor bars with a soft cloth and mild soap, then dry them.
Check the manual before using anything abrasive. The goal is to remove residue, not scratch the sensor.
When it is probably a repair issue
If the vent path is clear, loads are normal, and the dryer still does not dry, the problem may be a heating element, gas ignition issue, thermostat, blower wheel, belt, or control problem. Stop DIY if you smell gas, smell burning, see sparking, or need to open electrical or gas components.
Good maintenance rhythm
- Every load: clean the lint screen.
- Monthly: notice drying time and check exterior airflow.
- Yearly: clean the vent duct and exterior hood.
- As needed: clean the moisture sensor when sensor dry cycles act strange.