A bathroom exhaust fan may not be the most noticeable feature in a home, but it plays an important role in keeping the bathroom comfortable and protecting the home from excess moisture.
A properly working bathroom fan removes humid air, odors, and steam from the bathroom. If your existing fan is noisy, weak, or no longer working, replacing it can make a noticeable difference.
Fortunately, replacing a bathroom exhaust fan doesn’t always mean replacing the entire unit. In some cases, replacing just the fan motor can be a simpler and more affordable solution.
Call or text (503) 549-1070 or fill out a request form to request expert bathroom fan installation today!
Why Is a Bathroom Exhaust Fan Important?
Every time you take a hot shower or bath, moisture is released into the air.
Without adequate ventilation, that moisture can linger on walls, ceilings, mirrors, and other surfaces. Over time, excessive humidity can contribute to peeling paint, damaged finishes, and mold and mildew growth.
A properly sized and functioning exhaust fan helps remove this humid air from the bathroom.
Using the fan during and after a shower can help keep the bathroom drier and more comfortable.
Signs Your Bathroom Fan Needs Attention
Bathroom fans tend to get noisier and less effective as they get older.
Some common signs that it’s time to repair or replace your fan include:
- The fan is unusually loud.
- The fan rattles or vibrates.
- The fan barely moves any air.
- The fan takes a long time to clear steam from the bathroom.
- The fan doesn’t turn on.
- The motor makes a humming or grinding noise.
- The fan has stopped working completely.
- The bathroom stays humid long after a shower.
Sometimes the problem is simply a worn-out motor. Other times, the entire fan housing may be outdated or damaged.
PRO Tip: A loud and seized fan motor can be a fire hazard.
Replacing the Fan Motor Only
If your existing bathroom fan housing is still in good condition, you may not need to replace the entire fan.
Many bathroom exhaust fans are designed with removable motor and blower assemblies. If a replacement motor is available for your particular model, the motor can sometimes be replaced while leaving the existing housing in place.
This can be a great option when:
- The existing housing fits well.
- The housing is in good condition.
- A compatible replacement motor is available.
- You like the existing fan’s appearance.
- The ductwork and electrical connections are already suitable.
Replacing only the motor can also save time compared with removing the entire housing from the ceiling.
How Do You Know If the Motor Can Be Replaced?
Start by identifying the manufacturer and model of the existing fan.
The model number is often located on a label inside the fan housing, underneath the grille. Once the model is identified, you may be able to find a replacement motor assembly from the manufacturer or an electrical supply source.
It’s important to make sure the replacement motor is actually compatible with the existing housing rather than assuming that a motor that looks similar will work.
PRO Tip: Also measure the dimensions of the existing fan housing to double check compatibility.
If a replacement motor isn’t available, or if the existing housing is damaged or obsolete, replacing the entire fan may be the better option.
When Replacing the Entire Fan Makes More Sense
Sometimes a new motor isn’t enough.
Replacing the entire bathroom fan may be a better choice when:
- The housing is damaged.
- The fan is very old and replacement parts are no longer available.
- The existing fan is undersized for the bathroom.
- The fan is particularly noisy.
- You want a more energy-efficient model.
- You want additional features such as a humidity sensor.
- The existing installation has other problems that should be addressed.
A new fan can also be an opportunity to upgrade the performance of the bathroom rather than simply restoring the old fan to its original condition.
PRO Tip: Newer models are often more powerful yet quieter. It makes sense to upgrade especially if you are hiring a professional.
Choosing a New Bathroom Fan
There are several things to consider when choosing a replacement fan.
Airflow
Bathroom fans are typically rated in CFM, or cubic feet per minute.
A larger bathroom generally requires more airflow than a small powder room. Choosing a fan that’s appropriately sized for the space helps ensure that it can effectively remove moisture.
Pro Tip: Common sizes are 50 CFM, 70/80 CFM, 110 CFM. General rule of thumb is 1 CFM per square-foot of bathroom space. If your bathroom is 80 sqft, you want to install a 80 CFM fan.
Noise Level
Noise is another important consideration.
Older bathroom fans can be surprisingly loud, which often causes homeowners to avoid using them.
Modern fans are available with much lower noise ratings, making them more pleasant to use—especially in bathrooms located next to bedrooms.
PRO Tip: Bathroom fan’s noise level is measured in sones. Generally, 1.5 sones and under is considered quiet. Under 1 sones is hardly noticeable.
Humidity Sensors
Some newer bathroom fans include built-in humidity sensors.
Instead of relying on someone to remember to turn the fan on and off, a humidity-sensing fan can automatically activate when it detects increased humidity.
This can be particularly useful for busy households, children’s bathrooms, or bathrooms that are frequently used.
Lighting
Some bathroom exhaust fans also include built-in lighting.
If you’re replacing an existing fan during a bathroom update, combining the exhaust fan and light into one fixture can be a convenient way to improve both ventilation and lighting.
Don’t Forget the Ductwork
The fan itself is only part of the ventilation system.
A bathroom exhaust fan needs to move air through ductwork and ultimately exhaust it to an appropriate location outside the home.
If the duct is restricted, disconnected, excessively long, or improperly configured, even a powerful new fan may not perform as expected.
This is why simply buying the highest-CFM fan isn’t always the best solution.
The entire ventilation system should be considered when replacing a bathroom exhaust fan.
Professional Bathroom Fan Replacement in Portland
At EC Handyman Solutions, we replace and install bathroom exhaust fans throughout Portland and the surrounding areas. If your existing fan has stopped working, we can help figure out whether replacing the motor only is a practical option before replacing the entire unit.
Our goal at is to make your life easy. We offer expert bathroom fan replacement and make sure:
- ✔ Power is disconnected before work begins
- ✔ Electrical connections are properly wired
- ✔ Ductwork is correctly installed
- ✔ Devices are securely mounted
- ✔ Everything is tested to work properly
- ✔ Work area is cleaned up before we leave
- ✔ You are 100% satisfied with our services
By working with us, your home will be a place to enjoy life, instead of a list of to-dos for the weekends and holidays. Need other services? Check out our handyman service list.
Call or text (503) 549-1070 or fill out a request form to request expert bathroom fan installation today!
Resources
What is a Sone and How Can You Improve Yours? – Broan Nutone