How to Choose Bathroom Exhaust Fan

As a general rule, add 50 CFM for each toilet, bathtub, or shower, and 100 CFM for every jetted tub to ensure proper ventilation.
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Written byย 
Dumitru Nicolaescu
Updated:
March 24, 2025

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Bathroom Exhaust Fan Vs Ventilation Fan

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The Importance Of Bathroom Exhaust Fans

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Recommended Duration of Bathroom Fan Operation

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Bathroom Exhaust Fan Best Practices

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  • Exhausting the bath fan with an independent insulated sleeve

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  • Preventing Moisture Stains on the Bathroom Ceiling

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  • Preventing Condensation and Mold Growth in the Attic

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Choosing The Right Exhaust Fan for Your Bathroom

Choosing The Right Exhaust Fan for Your Bathroom

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  • Bathroom Size

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  • Small Bathrooms: Under 50 Square Feet

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  • Medium-Sized Bathrooms: 50-100 Square Feet

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  • Large Bathrooms: 100-150 Square Feet

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  • Extra-Large Bathrooms: Over 150 Square Feet or Special Considerations

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Conclusion

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