- Postcode districts
- GU9, GU10
- Nearby
- Aldershot, Fleet and Farnborough
- Guide price
- £280–£650
- Typical time on site
- half a day
- Water
- Hard across most of Surrey
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Farnham?
Our guide price for a bathroom extractor fan in Farnham is £280–£650 including VAT. Labour costs in South East England put local prices at about 12% above the UK guide figure. 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 Farnham including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Farnham
We cover every part of Farnham, including GU9 and GU10, and nearby Aldershot (2.8 miles) and Fleet (5 miles).
In Farnham, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. We check the duct route at Farnham surveys, because a short, straight run to outside matters more than the fan's headline figure. For windowless bathrooms in Farnham homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch.
Water across much of Surrey is 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
- Making good around the fan and checking that it extracts properly at the grille
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- Run-on timer, humidistat or light-linked switching set up to suit how the room is used
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.
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.
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.
