Range hood weak suction / not clearing smoke and odor
Hoods are rarely weak by themselves; the usual causes are loaded filters, a damper that will not open, a blocked or undersized duct, too many elbows, or a house that cannot supply makeup air. A tissue test with and without the duct quickly shows whether the hood or the installation is at fault.
Cross-checked ~60 min moderateBrands: All
Before you start
- Power off before removing filters, chimney covers or duct connections
- Work on roof or wall caps only with proper ladder or fall protection
- If the home has atmospheric (non-sealed) gas appliances or a fireplace, a strong hood without makeup air can backdraft flue gas; refer combustion-air concerns to an HVAC or gas professional
Diagnostic steps
Unlock all 7 steps with expected values
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