Why Dryer Vent Cleaning Is Critical
Lint is highly flammable. When the dryer vent is clogged, hot moist air cannot escape, temperatures inside the dryer rise, and lint trapped in the vent becomes a fire hazard. The U.S. Fire Administration estimates that clothes dryer fires cause an estimated $35 million in property damage annually — and the leading cause is failure to clean the dryer vent.
Signs Your Vent Needs Cleaning
- Clothes take longer than one cycle to dry
- The dryer is hot to the touch on the outside
- The laundry room feels hotter or more humid than usual when the dryer runs
- You smell a burning or hot lint smell
- The exterior vent flap does not open when the dryer is running
- It has been more than one year since the last cleaning
Cleaning the Lint Trap
Clean the lint trap before or after every load — this is basic dryer maintenance. But even with regular lint trap cleaning, lint gets past the trap and accumulates in the vent duct over time. The lint trap alone is not enough.
Full Vent Duct Cleaning
- Unplug the dryer (or turn off the gas valve for gas models).
- Pull the dryer away from the wall.
- Disconnect the vent duct from the back of the dryer.
- Use a dryer vent cleaning brush kit (a long flexible brush that can reach through the full duct length) to clean the duct from both ends — the dryer end and the exterior wall end.
- Vacuum any lint from the dryer’s exhaust port and the area around and behind the dryer.
- Go outside and clean the exterior vent cap. Remove any lint, debris, or bird nests blocking the opening.
- Reconnect the duct, push the dryer back, and run it on air-dry (no heat) for 10 minutes to blow out any remaining lint.
Vent Duct Best Practices
- Use rigid or semi-rigid metal duct — never plastic or vinyl flex duct, which traps lint and is a fire hazard
- Keep the duct run as short and straight as possible — every 90-degree bend reduces airflow
- Maximum recommended duct length is 25 feet with no bends; subtract 5 feet for each 90-degree elbow
- Make sure all connections are secure and sealed with foil duct tape (not cloth duct tape, which deteriorates with heat)
How Often to Clean
Clean the full vent duct at least once a year. If you do many loads per week, have a long vent run, or use dryer sheets (which leave residue that captures more lint), clean it every 6 months.
Stuck or unsure? Don't risk it.
If at any point a step doesn't match what you're seeing, stop and call in a pro. DIY gone wrong can cost more than a professional diagnosis — and our techs carry most Maytag parts on every vehicle.