How to Clean a Dryer Vent: Your Comprehensive Step-by-Step Guide

September 5, 2023

The venting system of a clothes dryer serves a very important purpose - it exhausts hot, moist air from the dryer outside of your home. Over time, lint and other debris accumulates inside the dryer ductwork. A partial blockage forces the dryer to work harder to push the air out, increasing drying times, wasting energy, and creating potential fire risks.

Industry experts recommend cleaning your dryer vent at least once per year. However, the ideal frequency depends on factors like:

  • Your dryer's usage - Clean more often for large/busy households.
  • Type of dryer duct - Vinyl or foil ducts clog faster than metal.
  • Presence of pets - Pet hair can quickly build up inside vents.
  • Buildup of lint - Check venting often if lint accumulates quickly.

Watch out for the following signs that your dryer vent needs cleaning

  • Increased drying times - Clothes take longer than normal to dry.
  • Hot exterior - The body of the dryer feels hotter to the touch.
  • Lint accumulation - You clean excessive lint from the trap/exhaust area.
  • Burnt smell - A burning odor emits from the dryer area.
  • Humid room - The laundry room becomes humid during dryer use.

Taking the time to clean your dryer's ductwork at least annually and watch for these warning signs can help avoid decreased efficiency, increased energy consumption, and potential dryer fires.

Safety Tips for Dryer Vent Cleaning

Before tackling a DIY dryer vent cleaning, keep these important safety recommendations in mind:

  • Disconnect power - Unplug the dryer and shut off gas, if applicable.
  • Use caution on ladders - Avoid leaning too far when cleaning exterior vents.
  • Wear gloves - Gloves protect your hands from sharp edges.
  • Check for damages - Inspect ductwork thoroughly for punctures or tears before reusing.
  • Follow instructions - Carefully read product directions for any chemicals/tools.
  • Avoid over-scrubbing - Harsh scrubbing can damage dryer components.
  • Check connections - Verify all ducting is securely reattached before using dryer.
  • Clean lint trap - Remove all lint from trap before every cycle.
  • Stay attentive - Do not leave dryer unattended during test cycles.

Prep Steps for Dryer Vent Cleaning

Gather all necessary cleaning supplies before getting started:

  • Screwdriver;
  • Work gloves;
  • Safety goggles;
  • Vacuum hose + attachments;
  • Stiff brush or dryer vent cleaning kit;
  • Duct tape.

Then take the following preparatory steps:

  • Disconnect the dryer power and gas supply lines.
  • Pull the dryer away from the wall to access the back panel.
  • Detach the dryer vent duct from the dryer exhaust outlet.
  • Remove the exterior vent cover (often near dryer exhaust port).
  • Have a trash bag ready to collect lint and debris.

How to Clean Dryer Vent Ductwork

With safety preparations and supplies ready, here are the detailed steps for cleaning a clothes dryer vent system:

Clean Around the Dryer Exhaust Opening Use a vacuum crevice tool to thoroughly clean lint and debris around the dryer exhaust outlet. Carefully vacuum inside the port also.

Vacuum Inside Dryer Vent Ductwork

Insert a vacuum hose several feet into the dryer duct and suck out as much lint as possible. Use hose extensions if able to reach deeper.

Scrub Inside the Duct with a Vent Brush For deeper cleaning, attach a dryer vent brush to an extendable pole. Rotate the brush inside the duct while pushing/pulling to dislodge stuck-on lint.

Remove Exterior Vent Cover and Vacuum Outside Opening Take off the outdoor vent cover and clean around the outside exhaust opening with your vacuum.

Use Vent Brush to Clean Entire Duct from Outdoors Inward 

Attach the vent brush to a pole from outdoors and scrub out the duct from the outside vent inward.

Inspect Ductwork for Damages Before reassembling, thoroughly inspect all dryer venting for holes, cracks, or blockages. Make any necessary repairs.

Reattach Dryer Vent Ductwork

 Securely reconnect the dryer ductwork using clamps, screws, or duct tape as needed to seal connections.

Clear Lint and Debris

 Carefully vacuum up all lint and debris kicked up by cleaning the dryer vent system.

Restore Dryer Power and Test Operation Plug dryer back in and turn gas on if applicable. Run a test cycle to verify proper airflow and drying function.

Tips for Preventing Lint Buildup

To help maintain clean dryer ductwork between deep cleanings, be diligent about these dryer maintenance practices:

  • Clean lint trap before every load - Allows optimal airflow;
  • Use a lint trap brush - Dislodges trapped lint;
  • Check duct joints - Ensure connections are not loose;
  • Avoid crushing ducts - Do not tightly bend flexible ductwork;
  • Clean around the dryer - Vacuum lint and dust regularly;
  • Use dryer vent brushes - Quickly whisk out lint;
  • Replace plastic/foil ducts - Upgrade to smooth metal ducting;
  • Hire Appliance Repair professional - Schedule periodic dryer vent cleanings.


Regular dryer vent cleaning is a straightforward process you can DIY to boost efficiency, save energy, prevent fire hazards, and extend appliance lifespan. Refer to this step-by-step guide to properly clean your dryer ducts. Be sure to vacuum lint traps before each load and watch for signs like longer drying times to determine when a thorough dryer vent cleaning is required. Taking good care of your dryer's venting system provides peace of mind while keeping your laundry functioning safely.

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