Screens on Dryer Ducts

Why You Shouldn’t Use Screens on Dryer Vents

Many homeowners install screens on the outside of their dryer vents to keep out birds and rodents. It seems like a smart idea—but it can actually cause serious problems.

Here’s why screens can do more harm than good, and what to use instead.

The Risks of Using Screens

1. Lint Buildup

• Screens collect lint over time, just like your dryer's lint trap.

• This buildup restricts airflow, making your dryer work harder.

• Poor airflow can cause overheating—a major fire hazard.

2. Reduced Efficiency

• Clothes take longer to dry.

• Higher energy use = increased utility bills.

3. Mold and Moisture

• Blocked vents trap hot, moist air inside the duct.

• This creates the perfect environment for mold growth, which can affect air quality and require expensive cleaning.

4. Hard-to-Reach = Poor Maintenance

• Exterior screens are often on roofs or high walls.

• Out of sight, out of mind—many go uncleaned, increasing the risk of clogs and fires.

Instead of screens, use these safer options:

• Pest-proof vent covers
  Designed with flaps or louvers that:

  • Open when the dryer is running

  • Close when not in use to block pests

  • Don’t trap lint

• Regular maintenance

  • Clean your lint trap after each load.

  • Check and clean dryer ducts and vent covers regularly.

  • Have a professional inspection annually.

Better Alternatives

Screens may keep animals out—but they can trap lint and create bigger problems. Choose pest-proof alternatives and stay on top of maintenance to keep your dryer working safely and efficiently.