Unpleasant odors, mold, and mildew, are just a few of the conditions that can result from poor bathroom ventilation. Because of all the humidity generated in these spaces inadequate bathroom ventilation can even contribute to mold and mildew problems in other areas of your home.  

One sure way to rid the bathroom of unwanted odors and excess moisture is with an exhaust fan.

Exhaust fans are rated in cfm’s, or cubic feet of air moved each minute. You’ll want a fan with a cfm rating that is at least 10 percent larger than the floor area of the bathroom you plan to use it in. When the fan is installed be sure that the exhaust duct takes the steam completely out of the house, and not just into the attic. Otherwise, you’re simply moving the humidity problem from one location to another.

To calculate how big of a fan you need to vent your bathroom, see our Bathroom Fan CFM Calculator.

Editorial Contributors
Danny Lipford

Danny Lipford


Danny Lipford is a home improvement expert and television personality who started his remodeling business, Lipford Construction, at the age of 21 in Mobile, Alabama. He gained national recognition as the host of the nationally syndicated television show, Today's Homeowner with Danny Lipford, which started as a small cable show in Mobile. Danny's expertise in home improvement has also led him to be a contributor to popular magazines and websites and the go-to source for advice on everything related to the home. He has made over 200 national television appearances and served as the home improvement expert for CBS's The Early Show and The Weather Channel for over a decade. Danny is also the founder of 3 Echoes Content Studio, TodaysHomeowner.com, and Checking In With Chelsea, a décor and lifestyle blog.

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