BATHROOM
Bathroom Fan Installation Cost: In 2026
Estimate bathroom exhaust fan installation cost — with the free electrical calculator.
A bathroom fan is the cheapest way to kill mold and steam — and one of the easiest electrical upgrades. Here's what installation runs in 2026.
THE SHORT ANSWER
The short answer
Bathroom exhaust fan installation runs $183–$444 in 2026 (fan installs average $155–$378). Replacing an existing fan runs $150–$300. New installation with venting and wiring runs $300–$700.
What it costs
Replacing an existing fan runs $150–$300. Installing a new one with a vent to the outside runs $300–$700. The fan itself runs $50–$150 (up to $400 for premium quiet models). Ducting and roof work add the rest.
- Replace existing: $150–$300
- New install with venting: $300–$700
- Fan unit: $50–$150
- Average install: $183–$444
Why venting matters
A fan that dumps into the attic instead of outside just moves the moisture problem. Proper venting to a soffit or roof cap is what prevents mold. If yours vents to the attic, budget $200–$400 to fix the duct.
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