- Postcode districts
- IP24
- Nearby
- Bury St Edmunds, Newmarket and Stowmarket
- Guide price
- £265–£650
- Typical time on site
- half a day
- Water
- Very hard across most of Norfolk
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Thetford?
Our guide price for a bathroom extractor fan in Thetford is £265–£650 including VAT. We adjust the national guide for East of England, where prices are typically about 6% 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 Thetford including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Thetford
As well as Thetford itself (IP24), we survey in Bury St Edmunds, Newmarket and Stowmarket.
Being a smaller town does not change how we work in Thetford: free survey, written quote, one team. For windowless bathrooms in Thetford homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch. If your Thetford home is listed or in a period terrace, a fan ducted through the loft to a roof vent can avoid a new hole in the front wall, though consent may still apply.
Most of Norfolk has very hard water. 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
- A backdraught shutter and external grille, so cold air does not blow back in
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
Decisions to make first
Intermittent or continuous
An intermittent fan runs during and after use. A continuous fan runs quietly all the time at a low rate and boosts when humidity rises.
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.

