- Postcode districts
- KT11
- Nearby
- Esher, Weybridge 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 Cobham?
As a guide, budget £280 to £650 including VAT for a bathroom extractor fan in Cobham; your written quote will pin it down. 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
- Wired to regulations
Inline fan
- Quiet fan in the loft void
Continuous extract
- Boost on humidity
Guide prices for Cobham including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Cobham
In Cobham we cover KT11; we also cover Esher, 3.3 miles away, and Weybridge.
Being a smaller town does not change how we work in Cobham: free survey, written quote, one team. Fans fitted in Cobham bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room. For windowless bathrooms in Cobham homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch.
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
Timer or humidistat
A timer keeps the fan running after the light goes off. A humidistat starts it whenever moisture rises, which suits rooms where people forget.
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.
