How to Clean Your Dryer Vent: Step-by-Step Safety Guide

According to the U.S. Fire Administration, clothes dryers cause an estimated 2,900 home fires each year, and the leading cause is failure to clean the dryer vent. Beyond fire safety, a clogged vent makes your dryer work harder, uses more energy, takes longer to dry clothes, and shortens the dryer's lifespan.

Cleaning your dryer vent annually is one of the most important home maintenance tasks. Here's how to do it safely.

Watch for these warning signs that your dryer vent is clogged:

• Clothes take more than one cycle to dry
• The dryer feels excessively hot to the touch during operation
• A burning smell when the dryer is running
• The laundry room feels more humid than usual
• Lint is visible around the dryer door seal
• The outside vent flap doesn't open when the dryer runs
• It's been more than a year since the last cleaning

Step 1: Disconnect the dryer. Unplug the dryer from the electrical outlet. For gas dryers, turn off the gas valve behind the dryer. Pull the dryer away from the wall to access the vent connection.

Step 2: Disconnect the vent duct. Loosen the clamp or tape securing the vent duct to the back of the dryer. Carefully pull the duct free.

Step 3: Clean from the inside. Use a dryer vent cleaning brush kit (available at hardware stores for about $20–$30). Insert the flexible brush into the vent opening on the back of the dryer and rotate to remove lint buildup.

Step 4: Clean the duct. Push the brush through the vent duct itself, working from both ends. For long vent runs, you may need an extended brush kit or a leaf blower to push lint out.

Step 5: Clean the exterior vent. Go outside and clear lint from the exterior vent opening. Make sure the flap moves freely.

Step 6: Reconnect and test. Reattach the vent duct, push the dryer back into position, restore power/gas, and run the dryer for 10–15 minutes on air only (no heat) to blow out any remaining loose lint.

DIY cleaning works well for short, straight vent runs. But call a professional for vent cleaning if your duct has multiple bends or elbows, runs through walls or ceilings, is longer than 15 feet, uses flexible vinyl or foil ducting (which should be replaced with rigid metal), or if you're unable to access both ends.

How often should I clean my dryer vent?
At minimum once per year. If you do heavy laundry (large family, pets), every 6 months is better. Clean the lint screen after every single load.

Can I use a leaf blower to clean my dryer vent?
Yes — a leaf blower is effective for pushing lint out of the vent duct. Insert the blower nozzle into the vent opening behind the dryer, seal around it with a towel, and run the blower for 30 seconds. Have someone check the exterior vent for lint output.

Does a clean vent actually save energy?
Yes. A clogged vent can increase drying time by 50% or more, which directly increases your electric or gas bill. Annual cleaning can save $25–$50 per year in energy costs.