Key insights
The cost of replacing an exhaust fan depends mostly on the fan's type and brand.
Jump to insightThe average cost to replace a bathroom exhaust fan is $396.
Jump to insightExhaust fan replacement can cost anywhere between $120 and $900, depending on the project.
Jump to insightExhaust fan replacement costs
Exhaust fans are rated by how much air they move, measured in cubic feet per minute (CFM). Typically, you’ll need a fan that moves 1 CFM per square foot of your bathroom. The cost of replacing your exhaust fan depends largely on the size of the unit you need for your bathroom.
Here’s what you can expect to pay for an exhaust fan replacement depending on the CFM grade:
| CFM rating | Bathroom square footage | Average exhaust fan cost |
|---|---|---|
| 80 or less | 40 to 80 square feet | $20 to $250 |
| 80 to 99 | 80 to 100 square feet | $50 to $325 |
| 100 to 150 | 100 to 150 square feet | $55 to $400 |
| 150 or more | 150 or more square feet | $100 to $500 or more |
Exhaust fan replacement costs by type
In addition to the CFM rating, exhaust fan replacement costs also depend on the fan type. For example, fans with a higher CFM rating and more features like heaters, lights and timers are typically more expensive than basic models. An average exhaust fan replacement usually costs around $396, with most projects ranging from $120 to $900.
Here are the average costs of replacing exhaust fans depending on the type:
| Type of exhaust fan | Cost range |
|---|---|
| Basic fan | $20 to $50 |
| Wall-mounted | $20 to $350 |
| Fan with light | $40 to $330 |
| Ceiling-mounted | $20 to $400 |
| Fan with light and heater | $50 to $370 |
| Inline | $100 to $310 |
| Humidity or motion sensing | $100 to $400 |
| Smart fan | $75 to $190 |
| Fan with heater | $90 to $280 |
| Continuous run | $120 to $330 |
| Fan with timer | $100 to $300 |
| Adjustable speed | $90 to $380 |
Additional exhaust fan costs
If you're replacing your exhaust fan or installing a new system, you may need a professional. Labor costs typically range from $200 to $800, depending on whether the fan installation requires electrical work, ductwork, venting or even roofing.
You may also need an HVAC or roofing permit to install a new system. HVAC permits can cost anywhere from $250 to $400, and roofing permits range from $70 to $250.
Factors affecting exhaust fan replacement costs
Several factors can influence how much you’ll ultimately pay for an exhaust fan replacement:
Fan size and CFM rating: Larger bathrooms require higher-capacity fans, which tend to cost more.
Features: Fans with added features like lights, heaters, motion sensors or timers typically come with higher price tags.
Installation complexity: Replacements that require additional ductwork, roofing or electrical upgrades increase labor costs.
Brand and quality: Premium brands and energy-efficient models may cost more upfront but could save money in the long run.
Permit requirements: Some installations may require HVAC or roofing permits, which add to the total expense.
DIY exhaust fan replacement vs. hiring a contractor
If you are thinking about replacing your exhaust fan, you could potentially do it yourself. Typical replacements usually take 30 minutes to an hour, and you typically only need a key saw, a flat-head or Phillips screwdriver, brackets and spackle for roof repair. However, some installations require more detailed work, like electrical, ductwork, venting and roofing, so it might be worth calling a contractor.
DIY pros
- Saves money on labor costs
- Can usually be done in less than an hour
- Requires only basic tools for straightforward replacements
- Provides a sense of accomplishment
DIY cons
- Electrical or ductwork mistakes can be hazardous
- More complex replacements may require advanced skills
- Risk of voiding warranties if not installed properly
- May need to purchase permits or additional tools
When should an exhaust fan be replaced?
Most exhaust fans last up to 10 years. Before your exhaust fan breaks down completely, you'll notice signs it needs repair or replacement.
One big sign is when a room starts to feel stuffy or smells musty. This could happen if your fan runs slower because of electrical or HVAC problems. Strange noises from your system or mold, mildew or wood rot are also strong signs it's time to replace the fan.
Does your home warranty cover exhaust fan repair or replacement?
Many home warranty companies cover exhaust fan repairs and replacements in their systems plan or as an add-on. However, some plans cover only kitchen exhaust fans, while others cover only attic or bathroom fans.
Some home warranties only cover newer fans, certain types of fans or specific repairs. You may not be covered if you have an older or professional-grade exhaust fan. Double-checking your policy is always a smart move.
FAQ
How long do exhaust fans in your home last?
Exhaust fans can last up to 10 years with proper maintenance.
Do I need to have my exhaust fans serviced regularly?
Regular exhaust fan maintenance, like cleaning, air filter changes and occasional oiling, should be done at least once a year.
Do exhaust fans have a warranty?
Yes, built-in and portable exhaust fans typically come with a manufacturer's warranty. Many home warranties also cover exhaust fans in their base plan or as an add-on.
What are the signs of exhaust fan failure?
Common signs of exhaust fan failure include strange noises, reduced airflow, lingering odors, visible mold or mildew and moisture buildup on walls or ceilings.
How long does it take to replace an exhaust fan?
Most straightforward replacements take 30 minutes to an hour, while more complex installations requiring electrical or ductwork may take longer.
Bottom line
A broken exhaust fan can leave your room stuffy and lead to mold and mildew. Luckily, replacing an exhaust fan yourself can be easy. Still, if electrical work and ductwork aren’t part of your skill set, calling a professional may be the way to go.
You can expect to pay $200 to $800 for labor, but getting a home warranty that covers exhaust fans could save you a lot of money if you're looking for a more budget-friendly option.
Article sources
ConsumerAffairs writers primarily rely on government data, industry experts and original research from other reputable publications to inform their work. Specific sources for this article include:
Home Ventilating Institute, “Care and Maintenance of Your Bathroom Exhaust Fan.” Accessed Sept. 17, 2026.
Angi, “How Much Does It Cost to Install a Bathroom Fan?” Accessed Sept. 17, 2026.
