- Postcode districts
- NR19, NR20
- Nearby
- Norwich, Thetford and King's Lynn
- 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 East Dereham?
Guide price in East Dereham: £265–£650 including VAT, depending on the room and what you choose. Labour costs in East of England put local prices at about 6% 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 East Dereham including VAT. Your itemised written quote after the free survey is the price that counts.
Working in East Dereham
In East Dereham we cover NR19 and NR20; we also cover Norwich, 15.8 miles away, and Thetford.
Being a smaller town does not change how we work in East Dereham: free survey, written quote, one team. If your East Dereham 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. We check the duct route at East Dereham surveys, because a short, straight run to outside matters more than the fan's headline figure.
Water across much of Norfolk 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
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
Decisions to make first
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.
Replacement air
A fan needs air to replace what it removes, so leave a gap of around 10 mm under the door or fit a door grille. A sealed room starves the fan.
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.
