- Postcode districts
- OX11
- Nearby
- Abingdon, Cowley and Oxford
- Guide price
- £280–£650
- Typical time on site
- half a day
- Water
- Hard across most of Oxfordshire
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Didcot?
In Didcot, a bathroom extractor fan typically costs £280–£650 including VAT, based on South East England prices. 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
- Fan with timer or humidistat
Inline fan
- Ducting to a roof or soffit vent
Continuous extract
- Good for windowless rooms
Guide prices for Didcot including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Didcot
As well as Didcot itself (OX11), we survey in Abingdon, Cowley and Oxford.
Homes in and around Didcot vary, so we look at the floor, the walls and the water system before we price anything. Fans fitted in Didcot bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room. If your Didcot bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check.
Supplies across most of Oxfordshire 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
- A check of the room, any existing fan or vent, and the shortest route to the outside
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
- A backdraught shutter and external grille, so cold air does not blow back in
Decisions to make first
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.
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.
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.

