Lint that builds up in a dryer vent makes clothes take longer to dry and is a real fire hazard. Clearing the duct once or twice a year restores airflow and keeps your dryer running safely.
What you'll need
- Vacuum with hose
- Dryer vent brush kit
- Screwdriver
- Foil duct tape
Step by step
- Unplug and pull out the dryerSwitch off and unplug the dryer, and for a gas model shut off the gas valve. Gently slide the unit away from the wall to reach the duct.
- Disconnect the ductLoosen the clamp or tape and pull the flexible duct off the back of the dryer and off the wall outlet. Note how it was attached so you can reconnect it.
- Vacuum out the lintUse a vacuum hose to clear loose lint from the dryer's exhaust port, the duct, and the wall opening. This removes the bulk of the buildup.
- Brush the ductPush a dryer vent brush through the duct with a twisting motion to scrub packed lint from the walls, then vacuum again. Do the same for the wall pipe leading outside.
- Clear the exterior ventGo outside and open or lift the vent flap, then pull out any lint clogging it. Make sure the flap moves freely so air can escape.
- Reconnect and testReattach the duct snugly at both ends with a clamp or foil tape, push the dryer back, and plug it in. Run a short cycle and confirm warm air flows from the outside vent.
Handy tips
- Clean the lint screen after every load to keep the vent clearer for longer.
- Use rigid or semi-rigid metal ducting rather than plastic or foil, which traps more lint and is more flammable.
- If your dryer takes two cycles to dry a load, a clogged vent is a likely cause.
Heads up
- Always unplug the dryer, and shut off the gas valve on gas models, before working on it.
- Lint is highly flammable and clogged vents are a leading cause of dryer fires, so do not skip this maintenance.
- Do not use foil or vinyl accordion-style ducting hidden in a wall, as it is a known fire risk.
FAQ
How often should I clean my dryer vent?
At least once a year for most homes, and more often if you dry frequently, have a long duct run, or own pets that shed.
What are signs of a clogged dryer vent?
Clothes staying damp after a cycle, a hot dryer or laundry room, a burning smell, or little to no air coming from the outside vent.
Can I clean the vent without moving the dryer?
You can clear the lint screen area and the outside vent easily, but a full cleaning of the duct requires disconnecting it, which usually means pulling the dryer out.