The dryer vent is a safety component, not just a performance feature. Lint buildup restricts airflow, lengthens cycles, and can contribute to a dryer fire.
Disconnect power before moving the dryer
Unplug the appliance. With a gas dryer, do not move it far enough to strain or manipulate the gas connector; call a qualified professional if that is necessary.
Detach the duct without crushing it
Access the rear connection and remove loose lint with a vacuum and a proper vent brush. Do not use tools that can puncture the duct or push a blockage farther away.
Clean the entire route to the exterior
Inspect the outside termination and flap. The path should be continuous and free of nests, compacted lint, and flattened sections behind the appliance.
Reassemble with appropriate vent materials
Follow the dryer manual and local code for duct material and joints. Fragile, torn, or heavily damaged flexible venting may need replacement rather than cleaning.
Long or high routes change the job
If the outlet is on a roof, the run has many bends, or you cannot reach the full path, professional cleaning is safer than improvising with ladders or excessively long tools.
After reassembly, confirm strong airflow outside and make sure the duct was not crushed again when the dryer was pushed back.
Sources
- U.S. Consumer Product Safety Commission — Clothes Dryer Safety — Dryer fire prevention, lint removal, exhaust venting, and safe operation.