- Postcode districts
- DT3, DT4
- Nearby
- Dorchester, Poole and Yeovil
- Guide price
- £255–£600
- Typical time on site
- half a day
- Water
- Hard across most of Dorset
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Weymouth?
Guide price in Weymouth: £255–£600 including VAT, depending on the room and what you choose. The figure depends on the size of the room, whether anything moves, and the products you pick.
Extractor fan
- Ducted to outside
Inline fan
- Grille in the ceiling
Continuous extract
- Low-energy fan running all the time
Guide prices for Weymouth including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Weymouth
We cover every part of Weymouth, including DT3 and DT4, and nearby Dorchester (7.2 miles) and Poole (21.9 miles).
Homes in and around Weymouth vary, so we look at the floor, the walls and the water system before we price anything. Fans fitted in Weymouth bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room. We check the duct route at Weymouth surveys, because a short, straight run to outside matters more than the fan's headline figure.
Supplies across most of Dorset are hard. Steam carries that scale onto mirrors and glass, so a fan that clears the room quickly helps on both counts. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
- A check of the room, any existing fan or vent, and the shortest route to the outside
- A backdraught shutter and external grille, so cold air does not blow back in
Decisions to make first
Axial, centrifugal or inline
Axial fans suit short, straight runs; centrifugal fans cope better with longer ducts; inline fans sit in the loft and are the quietest in the room.
Wall or ceiling
A wall fan on an outside wall is the simplest. A ceiling fan over the shower takes steam away at source but needs ducting through the loft.
Rules that apply in England
In England, Approved Document F sets bathroom extract at 15 l/s for an intermittent fan or 8 l/s for continuous extract. Wiring a new fan alters a circuit in a room with a bath or shower, so it is notifiable under Part P.

