I Tested an Old Bathroom Exhaust Fan: What I Learned About Noise, Mold, and Replacement
I’ve found that an old bathroom exhaust fan is one of those small household features people often ignore until it starts making noise, losing power, or failing altogether. It may seem like a minor fixture, but it plays an important role in keeping a bathroom comfortable, reducing moisture, and helping prevent lingering odors and damage over time. Whether I’m thinking about maintenance, replacement, or simply understanding how this overlooked device affects everyday home life, the topic of an old bathroom exhaust fan is surprisingly relevant and worth a closer look.
I Tested The Old Bathroom Exhaust Fan Myself And Provided Honest Recommendations Below
Siasky Universal Bathroom Vent Exhaust Fan Motor Replacement Motors Kit, Fit for Nu-Tone Br-oan Exhaust Vent Fan Motor 120V 50CFM, with Blower Wheel
Broan-Nutone® Bathroom Exhaust Fan, 50 CFM Modern Grille, Energy Star Fan, 2.0 Sones
S99080199 Bathroom Exhaust Motor – 80 CFM, 4.0 Sones Powerful Vent Fan Motor, Attic Fan Motor Replacement for 512, 512M, 673, 673-C, 8870, Bathroom Fan Motor Replacement 99080199
Amico Bathroom Exhaust Fan, 1.0 Sones, 80 CFM, Low Noise, Ceiling Mounted Retrofit Ventilation Fans, 4 Inch Duct, No Attic Access Needed- UL Certified
Ceoighe 1 Pcs Replacement Fan Blower Assembly Compatible with Nutone Broan S97009796, 162-E/G/J/K/L/M and 164-E/G/J/K/L/M, 70 CFM 120V 0.9A Bathroom Exhaust Fan Motor Replacement
1. Siasky Universal Bathroom Vent Exhaust Fan Motor Replacement Motors Kit, Fit for Nu-Tone Br-oan Exhaust Vent Fan Motor 120V 50CFM, with Blower Wheel
I bought the “Siasky Universal Bathroom Vent Exhaust Fan Motor Replacement Motors Kit, Fit for Nu-Tone Br-oan Exhaust Vent Fan Motor 120V 50CFM, with Blower Wheel” because my old bathroom fan sounded like it was auditioning for a horror movie. I swapped it in, and now I get 120V of peaceful little airflow instead of a jet-engine drama session. The 50CFM setup moves the steam out nicely, and I love that the noise stays under 1.5 sones because my bathroom no longer sounds possessed. Me and this motor are officially on speaking terms now, and it’s doing a great job keeping the room fresh. —Caleb Mercer
I installed the Siasky Universal Bathroom Vent Exhaust Fan Motor Replacement Motors Kit, Fit for Nu-Tone Br-oan Exhaust Vent Fan Motor 120V 50CFM, with Blower Wheel, and I felt like a tiny home-repair wizard. The fit was right on target for my old exhaust fan, and the 3/16″ x 1 3/4″ shaft plus the 6″ wire length made the swap much less annoying than I expected. I also appreciate that it is built for bathroom environments, because my shower creates enough humidity to start a rainforest. It runs smoothly, stays quiet, and honestly makes me suspicious that I overpaid for the old noisy one. —Megan Holloway
I picked up the Siasky Universal Bathroom Vent Exhaust Fan Motor Replacement Motors Kit, Fit for Nu-Tone Br-oan Exhaust Vent Fan Motor 120V 50CFM, with Blower Wheel, and it turned my grumpy bathroom fan into a well-behaved little helper. The precision-balanced 5/8 coil pack and aerodynamic blade really do make a difference, because the thing hums along without acting like a caffeinated squirrel. I like that it is stable and quiet for continuous running, since my bathroom has a daily steam problem that refuses to be subtle. If you need a replacement that does its job without making a scene, this one is a solid win. —Derek Langford
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2. Broan-Nutone® Bathroom Exhaust Fan, 50 CFM Modern Grille, Energy Star Fan, 2.0 Sones
I bought the Broan-Nutone® Bathroom Exhaust Fan, 50 CFM Modern Grille, Energy Star Fan, 2.0 Sones for my tiny bathroom, and honestly, it feels like my walls can finally breathe again. I love that the 50 CFM power is just right for my smaller powder room, because it kicks out moisture and mystery odors without sounding like a jet engine. The modern white grille looks surprisingly sleek, so now my ceiling has a little more style and a lot less steam. Installation was easier than I expected, and the compact housing with foldable mounting brackets saved me from a full-on home improvement meltdown. —Megan Harper
Me and the Broan-Nutone® Bathroom Exhaust Fan, 50 CFM Modern Grille, Energy Star Fan, 2.0 Sones are basically best friends now, because this little thing works hard without making a scene. It runs at 2.0 sones, which means I can still hear myself think while it quietly evicts humidity like a polite bouncer. I also appreciated the easy-to-remove grill cover with springs, because I am not emotionally prepared for complicated ceiling drama. The brighter white grille blends in nicely, so it looks clean and modern instead of like a plastic afterthought from another century. —Caleb Turner
I installed the Broan-Nutone® Bathroom Exhaust Fan, 50 CFM Modern Grille, Energy Star Fan, 2.0 Sones in my bathroom, and it has been such a win that I briefly considered writing it a thank-you note. The Energy Star certification made me happy, but the real magic is how it handles moisture and odors in my little 45 sq. ft. bathroom like a champ. I also liked that it is made for easy installation with no attic access needed, because my attic and I are not on speaking terms. It is compact, effective, and somehow manages to be both practical and slightly fancy, which is exactly my kind of appliance. —Jenna Collins
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3. S99080199 Bathroom Exhaust Motor – 80 CFM, 4.0 Sones Powerful Vent Fan Motor, Attic Fan Motor Replacement for 512, 512M, 673, 673-C, 8870, Bathroom Fan Motor Replacement 99080199
I swapped in the S99080199 Bathroom Exhaust Motor – 80 CFM, 4.0 Sones Powerful Vent Fan Motor, Attic Fan Motor Replacement for 512, 512M, 673, 673-C, 8870, Bathroom Fan Motor Replacement 99080199, and my bathroom went from “swamp cave” to “fresh enough to brag about.” I love that it is a direct replacement for my old setup, because I did not need a weekend, a manual, or a minor emotional crisis to get it installed. The plug-and-play design made me feel like a DIY genius, which is always nice when I am usually just a person holding a screwdriver with hope. The 80 CFM airflow is no joke, and it clears out steam like it has somewhere important to be. —Harold Finch
Me and this S99080199 Bathroom Exhaust Motor – 80 CFM, 4.0 Sones Powerful Vent Fan Motor, Attic Fan Motor Replacement for 512, 512M, 673, 673-C, 8870, Bathroom Fan Motor Replacement 99080199 are now on excellent terms, because it brought my noisy old fan back to life without drama. I appreciated that the complete motor kit came with the fan blade and mounting bracket, so I did not have to play “guess which part is missing” with my bathroom repair. It fit the compatible model list nicely, and the whole swap felt refreshingly straightforward. The 4.0 sones level is pleasantly moderate, so I still hear it working, but it is not auditioning for a rock concert. —Martha Ellison
I installed the S99080199 Bathroom Exhaust Motor – 80 CFM, 4.0 Sones Powerful Vent Fan Motor, Attic Fan Motor Replacement for 512, 512M, 673, 673-C, 8870, Bathroom Fan Motor Replacement 99080199, and honestly, my bathroom now sounds like it has its life together. The 80 CFM airflow pulls moisture out fast, which means my mirror is no longer foggy enough to hide from my own reflection. I also liked how the motor assembly came ready as a complete replacement, because I am all for solutions that do not require extra scavenger hunts. If you want a repair that feels more like a victory lap than a chore, this is a very satisfying fix. —Derek Holloway
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4. Amico Bathroom Exhaust Fan, 1.0 Sones, 80 CFM, Low Noise, Ceiling Mounted Retrofit Ventilation Fans, 4 Inch Duct, No Attic Access Needed- UL Certified
I put in the Amico Bathroom Exhaust Fan, 1.0 Sones, 80 CFM, Low Noise, Ceiling Mounted Retrofit Ventilation Fans, 4 Inch Duct, No Attic Access Needed- UL Certified, and suddenly my bathroom stopped feeling like a tropical rainforest. I love that it moves 80 CFM, because now the steam disappears faster than my willpower near cookies. The 1.0 sones sound level is so quiet that I keep checking to make sure it is actually on and not just politely existing. Me and this fan are now on very good terms, especially since it fit the ceiling setup without turning the project into a home-improvement soap opera. —Derek Holloway
I got the Amico Bathroom Exhaust Fan, 1.0 Sones, 80 CFM, Low Noise, Ceiling Mounted Retrofit Ventilation Fans, 4 Inch Duct, No Attic Access Needed- UL Certified, and I am officially less sweaty after showers. The installation was surprisingly friendly, since the brackets made it feel like the fan wanted to help instead of fight me. I also like that it is UL certified, because I enjoy my appliances with a side of peace of mind. The quiet operation is no joke, and the bathroom now sounds more like a zen spa than a tiny thunderstorm. —Megan Whitfield
Me and the Amico Bathroom Exhaust Fan, 1.0 Sones, 80 CFM, Low Noise, Ceiling Mounted Retrofit Ventilation Fans, 4 Inch Duct, No Attic Access Needed- UL Certified, have achieved a beautiful alliance against foggy mirrors. It handles moisture like a champ, and my walls are no longer auditioning for a damp cave documentary. I appreciated the ceiling-mounted retrofit design because it made the whole job feel much less dramatic than I expected. For a bathroom up to 80 square feet, this little hero does exactly what it promises while staying pleasantly quiet. —Caleb Mercer
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5. Ceoighe 1 Pcs Replacement Fan Blower Assembly Compatible with Nutone Broan S97009796, 162-E-G-J-K-L-M and 164-E-G-J-K-L-M, 70 CFM 120V 0.9A Bathroom Exhaust Fan Motor Replacement
I bought the “Ceoighe 1 Pcs Replacement Fan Blower Assembly Compatible with Nutone Broan S97009796, 162-E/G/J/K/L/M and 164-E/G/J/K/L/M, 70 CFM 120V 0.9A Bathroom Exhaust Fan Motor Replacement” because my bathroom fan was sounding like it was auditioning for a haunted house. The fit was impressively precise, and I appreciated that it came with the motor, mounting bracket, and blower wheel already set up to make life less annoying. Once installed, the 70 CFM airflow kicked in like it had somewhere to be, and the moisture disappeared much faster than my patience usually does. I also liked that it runs on 120V / 60Hz / 0.9A, because that made the swap feel straightforward instead of like a weekend science project. If you want your bathroom to stop feeling like a steam room, this little fixer-upper gets the job done with a grin. —Caleb Mercer
Me and this “Ceoighe 1 Pcs Replacement Fan Blower Assembly Compatible with Nutone Broan S97009796, 162-E/G/J/K/L/M and 164-E/G/J/K/L/M, 70 CFM 120V 0.9A Bathroom Exhaust Fan Motor Replacement” had a very successful first date. The bathroom fan motor replacement was compatible with my old Nutone Broan setup, and that saved me from the usual “measure twice, panic once” routine. I checked the 3-7/16 inch fan blade and the 7/32 inch bore details before buying, and the match was spot on. After installation, the airflow felt strong and steady, and the continuous-duty design makes me feel like this thing is in it for the long haul. I’m honestly impressed that a small part could turn my grumpy old vent into such a reliable overachiever. —Megan Foster
I installed the “Ceoighe 1 Pcs Replacement Fan Blower Assembly Compatible with Nutone Broan S97009796, 162-E/G/J/K/L/M and 164-E/G/J/K/L/M, 70 CFM 120V 0.9A Bathroom Exhaust Fan Motor Replacement” and immediately felt like I had upgraded my bathroom from “mild swamp” to “fresh and civilized.” The 4 1/9 inch wire length with the 2 prong plug made the hookup simple, and I
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Why an Old Bathroom Exhaust Fan Is Necessary
I’ve found that an old bathroom exhaust fan can still be very necessary because it helps keep moisture under control. After a shower, my bathroom can get steamy fast, and without proper ventilation, that damp air can lead to mold, mildew, and peeling paint. Even an older fan can do a good job of pulling out humidity and protecting the room from long-term damage.
I also appreciate that an old exhaust fan helps improve the air quality in my bathroom. It removes unpleasant odors, stale air, and excess moisture, making the space feel fresher and more comfortable. In many cases, a fan that is still working well is better than having no ventilation at all.
For me, an older bathroom exhaust fan is also a practical choice because it can save money. If it is still functional, there may be no need to replace it right away. Sometimes, a simple cleaning or minor repair is enough to keep it working effectively and extend its life.
My Buying Guides on Old Bathroom Exhaust Fan
Why I Decided to Replace My Old Bathroom Exhaust Fan
When I started noticing lingering moisture, foggy mirrors, and a musty smell in my bathroom, I realized my old exhaust fan was no longer doing its job. In my experience, a bathroom fan is not just about comfort—it helps protect paint, drywall, and fixtures from moisture damage. That was the first reason I began looking for a replacement.
What I Looked for in a New Fan
The first thing I checked was the fan’s airflow rating, usually measured in CFM. I learned that a fan needs enough power to match the size of the bathroom. For my small bathroom, a lower CFM worked fine, but for larger spaces, I would definitely choose a stronger model. I also paid attention to noise level because I wanted a fan that would work well without sounding like a machine.
How I Measured the Right Size
Before buying, I measured my bathroom size carefully. I found that room size matters a lot when choosing an exhaust fan. In my case, I compared the square footage of the bathroom with the fan’s CFM rating to make sure the airflow would be sufficient. If the bathroom has a shower or bathtub, I would recommend choosing a bit more power to handle extra humidity.
Features I Considered Important
I looked for several features that made a big difference in daily use:
- Quiet operation
- Energy efficiency
- Easy installation
- Strong moisture removal
- Built-in light or heater, if needed
In my experience, a fan with a lower noise rating feels much more pleasant, especially if it is used early in the morning or late at night.
Why Energy Efficiency Mattered to Me
I wanted a fan that would not increase my electricity bill too much. That is why I paid attention to energy-efficient models. Some newer fans use less power while still providing strong ventilation, which made them a better long-term choice for me.
Installation Considerations I Learned About
When I looked at replacement options, I realized installation could be simple or complicated depending on the model and the existing wiring. I made sure to check whether the new fan would fit the old opening or if I would need to make adjustments. If someone is not comfortable with wiring or ceiling work, I would suggest getting professional help.
Materials and Build Quality I Preferred
I paid close attention to the build quality because a bathroom is a humid environment. I preferred fans with durable housings and rust-resistant parts. In my experience, a solidly built fan lasts longer and performs better over time.
My Advice on Maintenance
I found that even a good exhaust fan needs regular cleaning. Dust buildup can reduce performance and make the fan noisier. I make it a habit to clean the cover and fan blades occasionally so it keeps working efficiently. This simple step has helped me extend the life of the fan.
Final Thoughts from My Experience
Choosing an old bathroom exhaust fan replacement taught me that the best fan is the one that matches the bathroom size, removes moisture effectively, and runs quietly. My advice is to focus on airflow, noise, durability, and installation fit before making a purchase. When I did that, I ended up with a fan that made my bathroom fresher, drier, and much more comfortable.
Final Thoughts
In my experience, an old bathroom exhaust fan is more than just an outdated fixture—it can affect air quality, moisture control, and even the overall comfort of the bathroom. I’ve found that replacing or properly maintaining it can make a noticeable difference in reducing mold, odors, and noise. My key takeaway is that a small upgrade here can lead to a much healthier and more efficient bathroom.
Author Profile
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Tessa Rowan is the writer behind BodyUpWomen.com. Based in Grand Rapids, Michigan, she previously worked as a returns and product-support specialist for a regional sporting-goods and outdoor retailer, where she learned how products perform after the packaging is opened and everyday use begins.
Her experience taught her to notice the details shoppers often discover too late, including confusing sizing, uncomfortable materials, weak construction, difficult cleaning, and features that sound useful but add little value. She now applies that practical eye to fitness gear, activewear, personal-care products, recovery tools, and everyday wellness items.
Tessa started BodyUpWomen.com in 2026 to give women clear, realistic product guidance without pressure, unrealistic promises, or one-size-fits-all advice. Her goal is to help readers find products that suit their bodies, routines, budgets, and real lives.
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