Signs Your Dryer Vent Is Clogged
Most homeowners don’t call us because they read about fire statistics — they call because something felt off with the dryer. Here’s what that “something” usually is.
No Airflow Outside Is the Giveaway
Hold your hand near the outside vent while the dryer runs — if you don’t feel strong airflow, the vent is likely clogged.
This is the single clearest test you can do yourself, and it’s the one most people never think to try. Go outside to where your dryer’s exterior vent hood is, start a load, and check for warm air moving out. Strong, steady airflow means your line is probably clear. Weak or no airflow almost always means lint has built up somewhere along the run.
Clothes Taking Multiple Cycles
If a load that used to finish in one cycle now regularly needs two, that’s rarely a coincidence. A dryer with restricted airflow can’t push moisture out efficiently, so clothes come out damp even after a full cycle. This tends to happen gradually, which is exactly why it’s easy to miss — most people adjust to running an extra cycle without realizing why they started needing to.
Burning Smell
A burning smell during or right after a cycle is one of the more urgent signs on this list. It usually means lint is close enough to the heating element to be scorching, which is precisely the situation that leads to dryer fires. If you notice this, it’s worth stopping use of the dryer until it’s been checked.
Hot Dryer, Damp Clothes
A dryer that feels unusually hot to the touch on the outside, combined with clothes that still come out damp, points to heat and moisture that aren’t escaping the way they should. The heat is doing its job — it’s the exhaust path that’s failing.
When to Call a Professional
If you’ve noticed one or more of these signs and it’s been over a year since your last cleaning — or you don’t know when it was last done at all — that’s the point to call rather than wait. A quick inspection tells you exactly what’s going on before it turns into a bigger problem.
Frequently Asked Questions
What’s the fastest way to check if my dryer vent is clogged?+
Feel for airflow at the outside vent hood while the dryer runs — weak airflow usually means a clog.
Is a burning smell always a fire risk?+
It’s a sign to stop using the dryer and get the vent checked as soon as possible.
How long can a dryer vent go without cleaning before it’s a problem?+
It varies, but many homeowners find issues after just one to two years of neglect, sooner with heavy use.
Can a clogged vent cause my dryer to stop heating?+
Yes — restricted airflow can trigger a thermal safety shutoff, which can look like a “no heat” problem.
What does it mean if my dryer shows an error code like D80, D90, or AF?+
Many newer dryers display an airflow-restriction warning — often shown as D80, D90, or AF — when the appliance detects that exhaust airflow is blocked or restricted. This is the dryer telling you the vent line needs attention. If you see one of these codes repeatedly, it’s a sign to have the vent line inspected rather than ignoring it, since continued restriction raises fire risk and strains the appliance. Check your specific dryer model’s manual, since code meanings can vary slightly by manufacturer.
Book an Inspection
Noticed one of these signs? A quick inspection tells you exactly what’s going on.
Call (904) 937-8383