Dryer Vent Cleaning: The Fire Risk in the Laundry Room
Every load of laundry sends lint into the vent run, and lint is close to ideal fire fuel — fine, dry, fluffy, and sitting inside a heated metal duct. Failure to clean the vent is the leading factor in home dryer fires, which number in the thousands every year in the U.S. The fix is completely unheroic: a professional cleaning of the full vent run, once a year, with the same rotary-brush-and-vacuum method used on chimneys. Same tools, same trade, same visit if you like — book it with the annual sweep.
The Signs Your Vent Is Choking
- Clothes need a second cycle — the classic sign; moist air has nowhere to go.
- The dryer and laundry room run hot — heat that should be exhausting outdoors is backing up.
- Burning smell while drying — lint near the heating element. Stop and get it cleaned.
- The outside flap barely moves — weak exhaust at the termination means a restricted run.
- Lint collecting behind the dryer — the duct is packed and leaking at the joints.
Beyond the fire math, a restricted vent is just expensive: longer cycles burn more energy, and the extra heat is the number-one killer of dryer heating elements and thermostats. An annual cleaning typically pays for itself in run time alone.
What the Service Covers
The full run, not the first three feet: dryer connection, transition duct, the in-wall or in-ceiling run — where long runs and every 90-degree bend collect the worst packing — through to the exterior termination and its flap or screen. Airflow is checked before and after, so you can see the difference, and crushed or code-problem ducting (vinyl and foil flex duct behind a dryer is a known hazard) gets flagged honestly rather than reburied behind the machine.