- Postcode districts
- KT8, KT12, KT13
- Nearby
- East Molesey, Sunbury-on-Thames and Walton-on-Thames
- 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 West Molesey?
For West Molesey, our guide range for a bathroom extractor fan is £280 to £650 including VAT. 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 West Molesey including VAT. Your itemised written quote after the free survey is the price that counts.
Working in West Molesey
In West Molesey we cover KT8, KT12 and KT13; we also cover East Molesey, 1.3 miles away, and Sunbury-on-Thames.
Being a smaller town does not change how we work in West Molesey: free survey, written quote, one team. Fans fitted in West Molesey bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room. We check the duct route at West Molesey surveys, because a short, straight run to outside matters more than the fan's headline figure.
Supplies across most of Surrey are 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 fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- Run-on timer, humidistat or light-linked switching set up to suit how the room is used
- 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
Decisions to make first
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.
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.

