Five checks you can make without disassembling anything
- Clean the lint screen and make sure it is not coated with residue.
- Run a normal load and check whether the exterior vent opens and moves a noticeable stream of air.
- Look behind the dryer for a crushed or sharply kinked transition duct.
- Notice whether the dryer or laundry room is much hotter than usual.
- Think about whether the problem appeared gradually or suddenly.
When the vent becomes a strong suspect
A combination of slow drying, weak exterior airflow and heat buildup makes the exhaust path worth inspecting. A long run with multiple turns can be more sensitive to restriction than a short, straight wall exit.
When the appliance could be the problem
If airflow is strong and the duct is clear, the dryer may have a heating, sensor or mechanical fault. Vent cleaning should not be sold as a cure for every slow dryer.
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