Cost to Replace a Bathroom Exhaust Fan
Replacing a bathroom exhaust fan may be a motor-and-fan assembly swap when the existing housing is compatible, or a full-unit replacement when it is incompatible. The work also requires confirming that the duct vents outside and that its damper works, so the fan can help prevent moisture damage.
Loading estimate…
Common reasons homeowners do this job
- The existing motor and fan assembly needs replacement.
- The current housing is incompatible with a replacement motor and fan assembly.
- The bathroom needs a fan with a CFM rating suited to its square footage.
- Existing ductwork vents into the attic instead of outside the home.
- The damper at the duct outlet has failed.
DIY or call a pro?
A licensed professional should replace a bathroom exhaust fan because the work involves high-voltage electrical components. Power must be turned off at the breaker before any electrical components are touched. New electrical wiring or structural changes also call for a licensed professional.
Frequently asked questions
- Can I replace a bathroom exhaust fan myself or should I hire someone?
- Hire a licensed professional for this job because it involves high-voltage electrical work. Even a compatible motor swap requires work around electrical components, and power must be shut off at the breaker before those components are handled.
- What makes bathroom exhaust fan replacement cost more?
- The price can increase with the number of fan units, labor time, and materials. Haul-away of the old material and a minimum or trip charge for a small job can also affect the total.
- What should be checked before choosing a replacement fan or motor?
- First determine the bathroom square footage so the replacement has the required CFM rating. Also check whether the existing housing is compatible with a modern motor and fan assembly; compatibility may avoid a full unit tear-out.
- Does a bathroom exhaust fan need to vent outside?
- Yes. Inspect the ductwork to confirm it vents to the exterior rather than into the attic, and verify that the damper at the duct outlet functions. Exterior venting helps prevent mold and moisture buildup.
Have a different situation?
Every home is different. Describe yours to Gable Pro and get a diagnosis, a real cost estimate, and — if you want — a match to a vetted local pro.