5 Warning Signs Your Dryer Vent Needs Cleaning

According to the U.S. Fire Administration, failure to clean dryer vents is the leading cause of home clothes dryer fires. It’s one of the most preventable house fire risks — but only if you catch the warning signs before lint buildup becomes a serious hazard. Here’s what to watch for.

1. Clothes Take Longer Than One Cycle to Dry

This is usually the first sign homeowners notice. When lint builds up inside the vent, it restricts airflow, meaning heat and moisture can’t escape efficiently. If you’re routinely running a second cycle to fully dry clothes, restricted airflow is a likely culprit.

2. The Dryer or Laundry Room Feels Unusually Hot

A properly vented dryer should expel hot, moist air outside — not into your laundry room. If the room feels noticeably hotter or more humid than usual during a drying cycle, it’s a sign air isn’t escaping the way it should.

3. A Burning Smell When the Dryer Runs

This is one of the more serious warning signs and shouldn’t be ignored. A burning smell can indicate lint buildup is coming into contact with the dryer’s heating element — a direct fire risk. If you notice this, stop using the dryer and schedule a professional inspection right away.

4. Visible Lint Around the Exterior Vent Opening

Step outside and check your home’s exterior dryer vent opening while the dryer is running. You should feel strong airflow. If airflow feels weak, or you see visible lint accumulated around the vent flap, that’s a clear sign of a blockage somewhere in the line.

5. It’s Been Over a Year Since Your Last Cleaning

Even without obvious symptoms, dryer vents should be professionally cleaned about once a year for most households — more often for larger families or homes with longer vent runs between the dryer and the exterior wall.

What to Do Next

If any of these signs sound familiar, it’s worth scheduling professional dryer vent cleaning before it becomes a bigger issue. Kevin Air Duct provides thorough lint removal across the full vent run — not just the accessible portion — plus an inspection to confirm everything is properly connected and functioning.