- Postcode districts
- DN21
- Nearby
- Retford, Scunthorpe and Lincoln
- Guide price
- £240–£600
- Typical time on site
- half a day
- Water
- Hard across most of Lincolnshire
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Gainsborough?
For Gainsborough, our guide range for a bathroom extractor fan is £240 to £600 including VAT. Labour costs in East Midlands put local prices at about 4% below 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 Gainsborough including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Gainsborough
As well as Gainsborough itself (DN21), we survey in Retford, Scunthorpe and Lincoln.
Gainsborough gets the same process as anywhere else: a free survey at your home and a written, itemised quote. For windowless bathrooms in Gainsborough homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch. Fans fitted in Gainsborough bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room.
Supplies across most of Lincolnshire 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
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- A backdraught shutter and external grille, so cold air does not blow back in
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.
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.

