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Homeowner guide · Last reviewed: August 1, 2026

Dryer taking too long to dry? Check the lint screen and vent

Restricted dryer airflow can lengthen cycles and allow heat and combustible lint to build up. Start with the lint screen and visible exhaust path.

Short answer: Clean the lint screen before or after every load, confirm the visible vent connection is not crushed, and check from outside that the exhaust flap opens while the dryer runs. If drying remains slow, stop repeated long cycles and arrange a full vent inspection or cleaning.

Why it matters

Restricted airflow makes clothes take longer to dry and can allow heat and combustible lint to build up. The U.S. Consumer Product Safety Commission estimates an annual average of 6,400 clothes-dryer fires and recommends cleaning the lint filter each use, keeping the exhaust unrestricted, and cleaning lint from the vent pipe at least yearly.

Safe checks, step by step

  1. 1

    Let the dryer cool, turn it off, and remove the lint screen. Roll the lint away with your fingers; do not run the dryer without the screen installed.

  2. 2

    If the screen looks clean but seems coated, check the owner’s manual. Whirlpool advises washing residue from many lint screens with warm water, liquid detergent, and a nylon brush, then drying the screen completely before reinstalling it.

  3. 3

    Without moving a heavy dryer or reaching behind it while it runs, look for an accessible connector that is visibly crushed, kinked, loose, or damaged. Stop if safe access would require moving the appliance, disconnecting gas, or opening a panel.

  4. 4

    From outside, observe the exhaust hood during a short heated cycle. The flap should open and airflow should be noticeable. Turn the dryer off before clearing loose lint or debris around the exterior hood.

  5. 5

    Have the full vent path cleaned at least yearly, or sooner when drying performance declines. If the duct is long, concealed, inaccessible, or repeatedly blocks, use a qualified dryer-vent or appliance professional.

Stop and call a professional if

  • A burning smell, smoke, scorch marks, unusual cabinet heat, or a hot plug or outlet
  • A breaker that trips, sparking, a damaged cord, or melted vent material
  • Any gas odor from a gas dryer—leave the area and contact the gas utility or emergency services from a safe location
  • Weak outdoor airflow or long drying times that continue after the lint screen and visible exterior hood are clean
  • A vent connection that requires moving the dryer, disconnecting gas, opening the cabinet, or accessing energized parts

Related guides and tools

Sources

Last reviewed: August 1, 2026. This date changes only when the content is reviewed or revised. Always follow the instructions for your exact model.

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