If you’re reacting to a problem because somebody is sick, you’ve waited too long to address indoor air quality. Because mold needs a source of water to sustain growth, preventing water is key.

Your Home’s Bathroom Fans Are There For a Reason

It’s winter, and we love a hot shower when it’s cold outside. A shower produces steam in your house, and that steam consists of thousands of visible microscopic water droplets suspended in the air. Lingering moisture causes mold in bathrooms, typically seen on the ceiling above your shower. Ventilation is required to remove steam, otherwise it will condensate on hard surfaces and can linger causing dampness in surrounding areas of the bathroom.

A Simple Action

If you have multiple people showering every day, your shower can be a culprit to increased humidity levels inside your home or dampness in your bathrooms vicinity. Vent fans are important. Their purpose is to remove excess moisture in the air produced when taking showers. When showering and bathing, use your bathroom’s exhaust fans. Don’t stop there, leave them running until the mirror is cleared.

Exhaust Fan Specs and Recommendations

A fan’s ability to move air is measured in Cubic Feet per Minute (CFM). The larger the CFM the more quickly humidity is removed. Most bathroom vent fans are rated from 50 CFM to 110 CFM. Check to see if it’s the appropriate size.

RULE OF THUMB: For a bathroom W10’ x L6’ x H8’ the recommended vent fan rating is 63 CFM or higher

Is it clogged with debris? Is it ducted to exhaust outside of the home? It doesn’t hurt to inspect the exhaust fan and duct to determine if repairs are needed. Click on the link below to use as a guide.


If you are experiencing mold in your home, our team can clear up your concerns. We perform mold inspections and remediations as part of our whole-home indoor air quality approach, and we’re happy to answer any questions that you have. If you suspect that mold is growing in your home, email Branch Environmental or call us at (706) 310-0097.

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