- Postcode districts
- CR3, CR6, RH9
- Nearby
- Coulsdon, Purley and Redhill
- 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 Caterham?
Our guide price for a bathroom extractor fan in Caterham is £280–£650 including VAT. 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 Caterham including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Caterham
We work right across Caterham — CR3, CR6 and RH9 — and in neighbouring Coulsdon and Purley.
Being a smaller town does not change how we work in Caterham: free survey, written quote, one team. If your Caterham bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check. Fans fitted in Caterham bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room.
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 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
- Run-on timer, humidistat or light-linked switching set up to suit how the room is used
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
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.
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.

