- Postcode districts
- BH6, BH7, BH23
- Nearby
- Bournemouth, New Milton and Ferndown
- Guide price
- £255–£600
- Typical time on site
- half a day
- Water
- Hard across most of Dorset
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Christchurch?
For Christchurch, our guide range for a bathroom extractor fan is £255 to £600 including VAT. 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 Christchurch including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Christchurch
In Christchurch we cover BH6, BH7 and BH23; we also cover Bournemouth, 4.4 miles away, and New Milton.
Homes in and around Christchurch vary, so we look at the floor, the walls and the water system before we price anything. In Christchurch flats, a new vent through an outside wall may need freeholder consent, so we raise it at the survey. For windowless bathrooms in Christchurch homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch.
Most of Dorset has 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
- Run-on timer, humidistat or light-linked switching set up to suit how the room is used
- 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
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.
Wall or ceiling
A wall fan on an outside wall is the simplest. A ceiling fan over the shower takes steam away at source but needs ducting through the loft.
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.

