- Postcode districts
- BA14
- Nearby
- Westbury, Melksham and Bath
- 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 Trowbridge?
As a guide, budget £255 to £600 including VAT for a bathroom extractor fan in Trowbridge; your written quote will pin it down. 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 Trowbridge including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Trowbridge
We cover every part of Trowbridge, including BA14, and nearby Westbury (4.2 miles) and Melksham (4.8 miles).
Homes in and around Trowbridge vary, so we look at the floor, the walls and the water system before we price anything. If your Trowbridge bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check. Fans fitted in Trowbridge bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room.
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
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
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.
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.
