How to Clean a Bathroom Exhaust Vent Fan

Bathroom exhaust vent fan on ceiling.
Bathroom exhaust vent fans need to be cleaned regularly.

It’s very important to have an exhaust fan that’s vented to the outside in every bathroom in your home, and to run it whenever you shower or bathe and for 15-20 minutes afterward to remove excess moisture that can cause mold and mildew to form.

An average sized bathroom vent fan that’s used one hour a day will exhaust over 2,000,000 cubic feet of air a year, or the equivalent of the air inside 1,000 homes.

As air is drawn through the fan, dust builds up on the grill cover and the fan motor over time. Cleaning the cover and motor housing every six months to one year will remove most of the accumulated dust. Here’s how to clean your vent fan.

To clean a bathroom vent fan:

  1. Turn the fan off at the switch or circuit breaker.
Pressing the spring clips together to remove vent fan cover.
Press spring clips together to remove vent fan cover.
  1. Remove the cover by pulling down until the cover is several inches from the ceiling. Press the spring-loaded wire clips, found on two sides of the cover, together then remove the clips from the slots in the fan housing.
Using a dusting brush on a vacuum to  clean vent fan cover.
Use a dusting brush on a vacuum to clean vent fan cover.
  1. Place the fan cover on a towel and use a vacuum cleaner equipped with a bristle brush dusting attachment to clean the cover and grille thoroughly both inside and out.
Cleaning the vent fan motor with vacuum attachment.
Cleaning the vent fan motor with vacuum attachment.
  1. Use the dusting attachment on the vacuum to clean inside the fan housing and around the motor. For hard to reach spots, use a crevice tool on the vacuum.
  2. Reinstall the fan cover by press the clips on the fan cover together, and slip them over the slots in the fan housing. Finally, push the fan cover up until it seats against the ceiling.

Further Information

Danny Lipford is among the country’s most sought-after home improvement experts.
The seasoned remodeling contractor and media personality served as the home improvement expert for CBS’s “The Early Show” and The Weather Channel for over a decade and has made more than 180 national television appearances on “Fox & Friends,” “Inside Edition,” “Morning Express with Robin Meade,” Fox Business Channel, Rachael Ray and more.
He travels the country making appearances as a brand ambassador and spokesperson, and each year contributes expertise to hundreds of popular magazines and online media outlets.

Chelsea Lipford Wolf is a born-and-raised home enthusiast, adding her crafty skills and passion for DIY as co-host of the top-rated, nationally syndicated “Today’s Homeowner” TV show.

In addition, Chelsea maintains her own home lifestyle and décor blog and award-winning web-series, “Checking in with Chelsea.”

WATCH THE SHOW: Don’t miss “Today’s Homeowner,” which airs each week on television nationwide. Check your local listings for time and channel.

Don’t miss out! Follow Today’s Homeowner on social media for exclusive videos, home improvement tips and behind-the-scenes photos.


  1. My bathroom fan has a metal housing and I can see inside that the blades have caked on layers of dust and grime but I can’t fit any attachment in there nor my hands (I have pretty small hands too.)to clean it. Even if I could I would need something to either dissolve the grime or scrape it of. I put the fan cover in the dishwasher and it looks brand new but I have no idea how to clean the actual fan blades. I guess I will search the internet on how to remove the fan to clean it.

  2. We live in a condo…our bathroom vent is downstairs….how do we clean the entire duct…its blowing down black dust!!!

  3. Danny, my vent that is in serious need of cleaning will not detach as it has wiring to one side. Is there anything I can use to spray and drip the crud off with out harming the wiring???? Please I have a gorgeous home with one vent fan that looks like I got it from the local landfill!

    • Hi, Allison,
      Great question! We have forwarded it to the Today’s Homeowner Radio Show’s producer.
      He will contact you soon to discuss featuring it during an upcoming show.
      Take care!


Please enter your comment!
Please enter your name here