- Postcode districts
- GU1, GU2, GU4
- Nearby
- Godalming, Woking and Aldershot
- 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 Guildford?
In Guildford, a bathroom extractor fan typically costs £280–£650 including VAT, based on South East England prices. 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
- Ducted to outside
Inline fan
- Grille in the ceiling
Continuous extract
- Low-energy fan running all the time
Guide prices for Guildford including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Guildford
We work right across Guildford — GU1, GU2 and GU4 — and in neighbouring Godalming and Woking.
In Guildford, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. In Guildford flats, a new vent through an outside wall may need freeholder consent, so we raise it at the survey. We check the duct route at Guildford surveys, because a short, straight run to outside matters more than the fan's headline figure.
Most of Surrey 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
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- 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
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
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.
Intermittent or continuous
An intermittent fan runs during and after use. A continuous fan runs quietly all the time at a low rate and boosts when humidity rises.
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.
