- Postcode districts
- TW4, TW13, TW14
- Nearby
- Ashford, Hounslow and Sunbury-on-Thames
- Guide price
- £300–£750
- Typical time on site
- half a day
- Water
- Very hard across most of Greater London
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Feltham?
Our guide price for a bathroom extractor fan in Feltham is £300–£750 including VAT. Prices in London run at about 25% 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
- Fan with timer or humidistat
Inline fan
- Ducting to a roof or soffit vent
Continuous extract
- Good for windowless rooms
Guide prices for Feltham including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Feltham
We work right across Feltham — TW4, TW13 and TW14 — and in neighbouring Ashford and Hounslow.
London homes in Feltham often mean stairs, permits and neighbours below; we plan the logistics as carefully as the bathroom. Fans fitted in Feltham bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room. We check the duct route at Feltham surveys, because a short, straight run to outside matters more than the fan's headline figure.
Water across much of Greater London is very 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
- Run-on timer, humidistat or light-linked switching set up to suit how the room is used
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- A check of the room, any existing fan or vent, and the shortest route to the outside
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
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.
Wall or ceiling
A wall fan on an outside wall is the simplest. A ceiling fan over the shower takes steam away at source but needs ducting through the loft.
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.
