Dryer Vent Fire Prevention: What Every Homeowner Should Know

By The Mad Hatter Service Company · October 2026

Dryer Fires Are Common and Preventable

The U.S. Fire Administration estimates that fire departments respond to about 2,900 home clothes dryer fires each year. Failure to clean was the leading factor contributing to those fires. Lint is highly combustible, and when it builds up in the vent, the dryer runs hotter and airflow drops, which is a dangerous combination.

Warning Signs of a Clogged Dryer Vent

• Clothes take more than one cycle to dry
• The dryer or laundry room feels unusually hot
• A burning smell when the dryer runs
• The exterior vent flap barely opens, or lint collects around it
• It has been more than a year since the vent was cleaned

Simple Prevention Steps

• Clean the lint screen before or after every load.
• Have the vent professionally cleaned at least once a year, more often for large families or long vent runs.
• Use rigid or semi-rigid metal duct, not plastic or foil, which can sag, trap lint, and burn.
• Keep the vent run short and straight where possible, and avoid crushing the transition duct behind the dryer.
• Check the exterior cap to make sure the flap opens freely and is not blocked by a screen, which catches lint.
• Do not run the dryer when you leave home or go to bed.

Why Homes Here Are at Risk

Many newer homes in St. Charles County have second-floor laundry rooms with long vent runs to the roof. Older homes in St. Louis County and the City often still have foil or plastic transition ducts. Both situations clog faster and are harder to clean with a store-bought brush kit.

What Professional Cleaning Includes

Our dryer vent cleaning covers the full vent from the dryer to the exterior termination, with rotary brush cleaning, air clearing, an exterior cap check, and airflow verification. Residential dryer vent cleaning is $249 to $269. For apartments, laundromats, and other buildings, see commercial dryer and exhaust vent cleaning.

Frequently Asked Questions