But if it's loud, dusty, or just not doing much, it may not be working the way it should.
DIY Playbook's Casey Finn helped Tanja Babich tackle one of the most overlooked cleaning jobs.
The bathroom exhaust fan plays an important role: it pulls moisture out of the air when you shower.
If it's clogged with dust, it can't do that effectively-which can lead to mold, mildew, and even peeling paint over time.
How to tell if your fan needs cleaning
The toilet paper test
-Turn on your fan and hold up a single piece of toilet paper.
-If it sticks to the fan it's working properly
-If it falls it's time to clean
Another sign:
If your fan is getting loud or noisy, that's often a sign dust buildup is affecting how it works-and it likely needs to be cleaned.
Supplies
-Vacuum with a brush attachment
-Microfiber cloth
-Mild soap and water
-Step stool
-Old toothbrush or small scrub brush
Step-by-step: how to clean your bathroom exhaust fan
Step 1. Turn off the fan
Always make sure the power is off before you start.
Step 2. Remove the cover
Most fan covers simply pull down. Gently squeeze the clips to unhook it.
Step 3. Wash the cover
Clean the grille with warm, soapy water and let it dry completely.
Step 4. Clean inside the fan
Use a vacuum to remove dust from the fan blades and motor housing.
For stuck-on grime, use a brush or an old toothbrush.
Step 5. Reinstall the cover
Clip the cover back into place and restore power.
Why this matters
A dirty exhaust fan can't remove humidity effectively. That extra moisture can build up in your bathroom and lead to:
-Mold and mildew
-Peeling paint
-Lingering odors
Experts recommend cleaning your bathroom exhaust fan at least once a year-more often if you notice dust buildup or extra noise.
And if you've never cleaned yours before, don't be surprised if it turns into a bit of a "science experiment."