Last updated: September 2026
Signs Your Dryer Vent May Be Clogged
Slow drying is the most obvious sign, but a few others are worth watching for too — and some point to a more urgent problem than others.
Clothes Taking Longer Than Usual to Dry
The classic sign — a load that used to finish in one cycle now needs two, even though nothing about your laundry habits changed.
The Dryer or Laundry Room Feels Unusually Hot
Restricted airflow makes the dryer work harder and run hotter than it should, which you can sometimes feel just standing near it.
A Burning Smell
This one's more urgent — a burning smell during a drying cycle can mean lint buildup is close to a real fire risk and should be addressed right away, not scheduled for later.
Visible Lint Around the Exterior Vent Hood
If you can see lint accumulating around the outside vent opening, it's a good bet there's more built up inside the vent run itself.
The Vent Flap Doesn't Open Properly When Running
Weak airflow at the exterior vent hood while the dryer is running is a fairly direct sign the run is at least partially blocked.
Think you might need dryer vent cleaning? Learn more about our Dryer Vent Cleaning service.
Frequently Asked Questions
Is a burning smell an emergency?
Treat it seriously — turn off the dryer and don't run it again until the vent has been checked. It's one of the few dryer vent symptoms worth acting on immediately rather than scheduling for later.