- Postcode districts
- SN12
- Nearby
- Trowbridge, Chippenham and Devizes
- Guide price
- £255–£600
- Typical time on site
- half a day
- Water
- Hard across most of Wiltshire
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Melksham?
In Melksham, a bathroom extractor fan typically costs £255–£600 including VAT, based on South West England prices. 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 Melksham including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Melksham
In Melksham we cover SN12; we also cover Trowbridge, 4.8 miles away, and Chippenham.
Melksham gets the same process as anywhere else: a free survey at your home and a written, itemised quote. If your Melksham bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check. We check the duct route at Melksham surveys, because a short, straight run to outside matters more than the fan's headline figure.
Water across much of Wiltshire is 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
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.

