Is the exhaust vent or outside exhaust hood clogged with lint, restricting air movement?
A clogged exhaust vent system slows moist air from leaving the dryer and extends drying time. Run the dryer for 5-10 minutes. Hold your hand under the outside exhaust hood to check air movement. If the air movement is less than a hair dryer on high speed, clean the lint from the entire length of the system and exhaust hood.
Replace any plastic or metal foil vent with rigid or flexible heavy metal vent.
Lint should be removed from the entire length of the system every 2 years or more often, depending on the dryer usage.
Check that the outside exhaust hood is free of debris and that the louvers or flapper door open and close easily. Box or louvered hoods are recommended.
Is the exhaust vent kinked, smashed or crushed?
Kinked or crushed exhaust vent material slows moist air from leaving the dryer and extends drying time. Replace any plastic or metal foil vent with rigid or flexible heavy metal vent.