BathroBathroom Exhaust Fan — Installation & Replacement

Clear steam, stop odors, and protect finishes. We install quiet, code-compliant bath fans with the right ducting and exterior vent so moisture actually leaves the house—not your attic.

Why it matters

• Removes humidity that causes mold, peeling paint, and swollen doors
• Cuts mirror fog and odors faster
• Protects insulation, framing, and nearby wiring from moisture

What we install

• Quiet fans with low sone ratings for comfortable use
• Right-size airflow by room (typical 50–110+ CFM; bigger for large baths)
• Smart controls: timers, motion or humidity sensors, wall switches that auto-shutoff
• Inline or ceiling fans; wall fans where ceiling access is tight
• Proper ducting: smooth, short runs in 4–6 inch duct, sealed and insulated where needed
• Exterior termination: roof or wall vent with backdraft damper, flashed and sealed

Installation process

1. On-site assessment — measure the room, check electrical, framing, and a clear duct path to the exterior.
2. Options and written pricing after the visit — fan size, noise level, control type, vent style and location.
3. Professional install — cut-in and mount, dedicated switch or control, tight duct connections, sealed roof/wall cap.
4. Test and verify — airflow and damper check, user walk-through, simple care tips.

Common upgrades we handle

• Replacing loud, weak fans that barely move air
• Converting flex duct to smooth, properly sized runs for real airflow
• Adding humidity or motion controls to prevent forgetfulness
• Moving venting from the attic to the outside, as code requires

Code and safety, simplified

• Vent to outdoors, not into attic or crawl
• GFCI protection where required; wet/damp-rated fixtures near showers
• Correct clearances, sealed penetrations, and labeled circuits

Wondering If We Cover Your City?

Our services are just as easy to schedule across multiple parts of the Bay Area. In the South Bay, we serve San Jose, Sunnyvale, Los Gatos, Saratoga, Campbell, Cambrian Park, Cupertino, Mountain View, Los Altos, Palo Alto, and Menlo Park.

On the Peninsula and the West Bay, we provide the same convenient support in Atherton, Redwood City, San Carlos, Belmont, Foster City, and surrounding areas. In the East Bay, we’re available in Fremont, Newark, Milpitas, and Union City—so wherever you are in our service area, help is close by and simple to book.

If you’re not sure whether we cover your neighborhood, just reach out—give us a call or submit a request online. It’s quick, easy, and completely free, and we’ll confirm availability and next steps right away.

Schedule a technician for an on-site bathroom fan assessment and installation plan: 510-400-6425.

Keywords: bathroom exhaust fan installation, bath fan replacement, humidity control fan, quiet exhaust fan, code-compliant ventilation.