The flap at the exterior termination that opens on airflow and closes when the dryer stops.
Required at the termination. It keeps outside air, rain, insects and animals out when the dryer is idle, and opens under exhaust pressure when it runs. Damper flaps are the part that fails most predictably in Texas — sun exposure makes plastic brittle, and a flap that sticks half-open invites nesting while one that sticks closed blocks the exhaust entirely.
We work on backdraft damper every week across DFW. CSIA-certified, written quotes, financing available.
Flat fee confirmed when you book. Same-week scheduling. A pass/fail verdict within 48 hours.
No airflow, overheating dryer, burning smell, or a vent you're not sure about? We answer 7 AM to midnight and the assessment ends in a written safe-to-use verdict — including a do-not-use notice when the evidence supports one. After-hours dispatch runs subject to crew availability.
Emergency line