Bathroom Exhaust

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What is there to know about bathroom ventilation fans?

Bathroom Exhaust

A bathroom ventilation fan can help improve air quality in a home, office, or commercial setting. This type of fan removes heat and humidity that can cause mold, mildew, and ruin woodwork. Here are some tips on choosing a bathroom fan:

  • Ceiling or wall exhaust fans are available. Choose what works best with your existing ductwork.
  • Some bathroom fans come with lighting and/or a heating element.
  • If you're installing a fan over the shower, buy a fan specifically manufactured for use over showers and baths.
  • Buy a fan that can move air at a rate of 8 air exchanges per minute.
  • Look for a fan that has a low sone rating. A good rating will be under one sone—.5 is an ideal rating.
  • Read the manufacturer's instructions for installation. If you're unsure about installing the fan, call a professional.



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Jennifer Mathes, Ph.D.