- Postcode districts
- GU47, RG40, RG45
- Nearby
- Sandhurst, Yateley and Camberley
- Guide price
- £280–£650
- Typical time on site
- half a day
- Water
- Hard across most of Berkshire
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Crowthorne?
Guide price in Crowthorne: £280–£650 including VAT, depending on the room and what you choose. Prices in South East England run at about 12% above the national guide, mainly because of labour rates. The figure depends on the size of the room, whether anything moves, and the products you pick.
Extractor fan
- Wired to regulations
Inline fan
- Quiet fan in the loft void
Continuous extract
- Boost on humidity
Guide prices for Crowthorne including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Crowthorne
We work right across Crowthorne — GU47, RG40 and RG45 — and in neighbouring Sandhurst and Yateley.
In Crowthorne, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. For windowless bathrooms in Crowthorne homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch. We check the duct route at Crowthorne surveys, because a short, straight run to outside matters more than the fan's headline figure.
Most of Berkshire has hard water. 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
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
- Making good around the fan and checking that it extracts properly at the grille
- Run-on timer, humidistat or light-linked switching set up to suit how the room is used
- A check of the room, any existing fan or vent, and the shortest route to the outside
Decisions to make first
Replacement air
A fan needs air to replace what it removes, so leave a gap of around 10 mm under the door or fit a door grille. A sealed room starves the fan.
Timer or humidistat
A timer keeps the fan running after the light goes off. A humidistat starts it whenever moisture rises, which suits rooms where people forget.
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.

