Dryer Vent Fire Prevention: What Every Homeowner Should Know
The US Fire Administration estimates nearly 16,000 home fires per year are caused by dryers and washing machines, with the vast majority traced to clogged or improperly installed dryer vents.
Why the risk is so high
Lint is extremely flammable. When it builds up in the vent run behind the dryer, hot exhaust gets trapped, the dryer overheats, and the lint can ignite — often during the cool-down cycle when no one is in the room.
The warning signs
Clothes taking multiple cycles to dry. Dryer cabinet hot to the touch. Burning smell during operation. Lint accumulation around the outside vent cap. The dryer shutting off mid-cycle on its thermal limit.
What proper cleaning includes
A real dryer vent cleaning uses a powered rotary brush that travels the full length of the vent run from the dryer to the exterior cap. HEPA vacuum capture at the source. Inspection of the transition hose and replacement if crushed. Final airflow measurement to verify the system is breathing properly.
How often
Once a year minimum. Twice a year for households with pets, large families, or long vent runs.