- Postcode districts
- SL4
- Nearby
- Slough, Egham and Staines
- 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 Windsor?
In Windsor, a bathroom extractor fan typically costs £280–£650 including VAT, based on South East England prices. 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 Windsor including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Windsor
As well as Windsor itself (SL4), we survey in Slough, Egham and Staines.
Homes in and around Windsor vary, so we look at the floor, the walls and the water system before we price anything. If your Windsor bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check. If your Windsor 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.
Water across much of Berkshire 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
- 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
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
Decisions to make first
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.
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.
