- Postcode districts
- BR8
- Nearby
- Bexley, Dartford and Welling
- Guide price
- £280–£650
- Typical time on site
- half a day
- Water
- Very hard across most of Kent
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Swanley?
In Swanley, a bathroom extractor fan typically costs £280–£650 including VAT, based on South East England prices. 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 Swanley including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Swanley
In Swanley we cover BR8; we also cover Bexley, 3.2 miles away, and Dartford.
Swanley gets the same process as anywhere else: a free survey at your home and a written, itemised quote. In Swanley 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 Swanley surveys, because a short, straight run to outside matters more than the fan's headline figure.
Water across much of Kent 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
- A backdraught shutter and external grille, so cold air does not blow back in
- Making good around the fan and checking that it extracts properly at the grille
- A check of the room, any existing fan or vent, and the shortest route to the outside
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
Decisions to make first
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.
Noise
Compare the stated noise level in decibels. Inline fans and low-speed continuous fans are much quieter in the room than budget axial fans.
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.

