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How to Clean a Dryer Vent

easyHome Repair1-2 hours9 steps

Safety Warnings

  • Dryers expose flammable materials to heat; failure to clean ducts is a leading cause of residential fires.
  • Disconnect the appliance from power before performing maintenance.

Tools Needed

Vacuum cleaner — High-suction with hose attachment
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Screwdriver — Phillips #2
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Vent brush — 4-inch nylon brush
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Materials

Replacement clamps — 4-inch tension clamps(2)
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Cleaning cloth — Microfiber(1)
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Steps

1
Clear the lint filter located inside the dryer drum to ensure a baseline of efficiency.
Tip: UL recommends cleaning the lint filter after every single cycle.
2
Pull the dryer away from the wall to access the flex transition hose connected to the back of the machine.
Tip: Be careful not to kink the hose while moving the appliance.
3
Disconnect the transition hose from the dryer and the wall duct, removing any clamps with a screwdriver.
Tip: Check the hose for any tears or holes that could leak flammable lint.
4
Use a vacuum cleaner to remove lint from the interior of the dryer exhaust port and the flexible transition hose.
5
Feed a vent brush through the 4-inch rigid galvanized pipe within the wall framing to loosen accumulated lint.
Tip: Push the brush all the way to the exterior termination fitting.
6
Go outside and clear the vent duct hood, removing any lint stuck to the plastic flaps.
Tip: Ensure the flaps move freely so that insects, birds, and snakes cannot enter the pipe.
7
Vacuum the interior of the wall duct from the outside if possible to remove the loosened debris.
8
Reconnect the transition hose to the dryer and wall duct, securing them with 4-inch clamps.
9
Run the dryer on a heat cycle for 15-20 minutes to blow out any remaining loose particles.

Pro Tips

  • A clean, unobstructed dryer vent improves both the efficiency and safety of the appliance.
  • Obstructed ducts markedly increase drying time and cause the dryer to waste energy.
  • Clean the duct at regular intervals to prevent fire hazards.

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Sources

Synthesized from 8 verified sources:

Wikipedia (CC BY-SA 4.0)View →
Wikipedia (CC BY-SA 4.0)View →
Energy Saver (energy.gov)View →
Gutenberg: Simple Plumbing Repairs (FB 1460)View →
USDA Farmers' Bulletin (Gutenberg)View →
Energy Saver (energy.gov)View →
Energy Saver (energy.gov)View →
Gutenberg: Dwelling ConstructionView →