A clogged dryer vent is more than just an inconvenience—it can lead to longer drying times, higher energy bills, and even fire hazards. Over time, lint, dust, and debris build up inside the vent, restricting airflow and putting excessive strain on your dryer.

Ignoring a clogged vent can damage your appliance, increase energy costs, and create serious safety risks. Below are five warning signs that your dryer vent may be clogged and in need of professional cleaning.

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1. Clothes Take Longer to Dry

One of the earliest and most common signs of a clogged dryer vent is increased drying time. If your clothes are still damp after a normal drying cycle, it may be due to restricted airflow in the vent system.

Why This Happens:

• A blocked vent traps heat and moisture, preventing proper drying.
• The dryer works harder and runs longer cycles, leading to higher energy costs.
• Over time, the excess heat can damage clothing fibers and reduce their lifespan.

Solution: If you notice your dryer taking longer than usual, check the vent and schedule a professional dryer vent cleaning.

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2. The Dryer Feels Excessively Hot

If your dryer or laundry room feels unusually hot while the machine is running, it’s a major red flag. A clogged vent prevents hot air from escaping, causing the appliance to overheat.

Why This Happens:

• The trapped heat increases wear and tear on the dryer.
• Excess heat can damage internal dryer components, leading to costly repairs.
• Overheating significantly increases the risk of dryer fires.

Solution: If your dryer is overheating, stop using it immediately and inspect the vent for blockages.

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3. A Burning Smell While Drying

A burning smell when using the dryer is a serious warning sign that should never be ignored. Lint is highly flammable, and a clogged vent increases the chance of it catching fire inside the dryer system.

Why This Happens:

• Lint buildup blocks airflow, causing heat to build up excessively.
• Lint can ignite if it gets too close to the heating element or motor.
• Poor ventilation can cause electrical components to overheat, leading to potential fire hazards.

Solution: If you smell burning or notice scorching near the vent, turn off your dryer immediately and contact a dryer vent cleaning professional.

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4. Excess Lint Accumulation Around the Dryer Vent

While some lint is expected in the lint trap, an excessive amount around the vent opening or inside the dryer drum may indicate poor ventilation.

Signs of Lint Buildup:

• Lint collecting around the dryer door or vent opening.
• Large amounts of lint left on clothing after drying.
• Lint escaping from the exterior dryer vent flap.

Solution: If lint is escaping into your home, your vent is likely clogged. Regularly check the vent opening and schedule a professional cleaning at least once a year.

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5. The Exterior Vent Flap Doesn’t Open Properly

The outside dryer vent flap should open freely when the dryer is running, allowing hot air to escape. If it remains closed, partially blocked, or barely moves, there is likely a blockage inside the vent line.

Why This Happens:

• Lint buildup prevents the flap from opening fully.
• Pest nests, debris, or bird nests inside the vent can obstruct airflow.
• Poor ventilation causes heat and moisture to back up into the dryer, leading to mold growth inside the vent system.

Solution: Check the exterior vent while the dryer is running. If it’s not opening properly, cleaning the vent line is necessary.