- Postcode districts
- KT17, SM2, SM7
- Nearby
- Sutton, Ewell and Epsom
- 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 Banstead?
Guide price in Banstead: £280–£650 including VAT, depending on the room and what you choose. We adjust the national guide for South East England, where prices are typically about 12% above the UK average. 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 Banstead including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Banstead
As well as Banstead itself (KT17, SM2 and SM7), we survey in Sutton, Ewell and Epsom.
Homes in and around Banstead vary, so we look at the floor, the walls and the water system before we price anything. We check the duct route at Banstead surveys, because a short, straight run to outside matters more than the fan's headline figure. If your Banstead home is listed or in a period terrace, a fan ducted through the loft to a roof vent can avoid a new hole in the front wall, though consent may still apply.
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
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- 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
- Making good around the fan and checking that it extracts properly at the grille
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.
