- Postcode districts
- G82, G83
- Nearby
- Dumbarton, Helensburgh and Erskine
- Guide price
- £240–£600
- Typical time on site
- half a day
- Water
- Soft across most of Greater Glasgow
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Vale of Leven?
For Vale of Leven, our guide range for a bathroom extractor fan is £240 to £600 including VAT. We adjust the national guide for Scotland, where prices are typically about 4% below the UK average. 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 Vale of Leven including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Vale of Leven
As well as Vale of Leven itself (G82 and G83), we survey in Dumbarton, Helensburgh and Erskine.
Vale of Leven gets the same process as anywhere else: a free survey at your home and a written, itemised quote. We check the duct route at Vale of Leven surveys, because a short, straight run to outside matters more than the fan's headline figure. For windowless bathrooms in Vale of Leven homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch.
Supplies across most of Greater Glasgow are soft. Even so, condensation is the bigger problem in any bathroom, and a properly sized extractor is what deals with it. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- 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
- 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
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.
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 Scotland
In Scotland, the Technical Handbook also uses 15 l/s extract for a bathroom. A replacement fan rarely needs a building warrant, but forming a new bathroom may.

