Dryer Vent Cleaning: Why It Matters for Fire Prevention

The US Fire Administration tracks roughly 2,900 residential fires per year started by clothes dryers. The leading cause, in their data, is failure to clean — lint accumulates inside the vent duct, the dryer overheats, and the lint ignites.

Six signs your dryer vent needs cleaning

• Clothes take more than one cycle to fully dry
• The dryer's exterior cabinet feels hot during a run
• There's a burning smell during or right after a cycle
• The laundry room feels humid or hot
• You can't remember the last time the vent was cleaned
• Lint is visible at the outside exhaust hood (or worse, the hood flap is stuck open)

Why this is worse in Maryland apartments and townhomes

Many PG County and Silver Spring townhomes route the dryer vent through 20-35 feet of in-wall duct with multiple 90° turns. That run-length and those turns are where lint accumulates fastest. We see clogs on 2-year-old buildings.

What an NFPA-211 cleaning looks like

1. Disconnect the dryer from the vent
2. Visual + airflow inspection from both ends
3. Rotating-brush + air-whip cleaning through the entire vent run
4. Lint trap and blower fan cleaning inside the dryer cabinet
5. Exterior cap inspection — replace if the flap is stuck or screened
6. Reconnect, run a test cycle, measure airflow improvement, document

Property managers: ask for the code-compliance report

If you manage a multi-unit building in Maryland, you can ask any vendor for a written code-compliance report after a cleaning. We provide one per unit. If your current vendor can't, that's a flag.