Chimney-style range hood with a glass canopy over a cooktop
Generic photo: Bilguun Gantumur · Pexels License

Range hood damper flaps or chatters in wind

The backdraft flap is light and moves with wind pressure. Fixes: clean grease so it seals, replace worn foam stops, add a spring-loaded damper, or add light weight to the flap. Too many dampers reduce airflow.

Cross-checked ~45 min easyBrands: All

Before you start

  • Breaker off before removing the hood blower
  • Ladder safety at roof/wall caps

Diagnostic steps

Unlock all 3 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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Range hood damper flaps or chatters in wind · OnCall Tech