- Postcode districts
- PR1, PR2
- Nearby
- Blackburn, Darwen and Poulton-le-Fylde
- Guide price
- £235–£550
- Typical time on site
- half a day
- Water
- Soft across most of Lancashire
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Preston?
In Preston, a bathroom extractor fan typically costs £235–£550 including VAT, based on North West England prices. Prices in North West England run at about 6% below the national guide, mainly because of labour rates. 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 Preston including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Preston
As well as Preston itself (PR1 and PR2), we survey in Blackburn, Darwen and Poulton-le-Fylde.
Preston is a big place with every kind of home, from terraces to flats to new builds, so we never price from a photo alone. For windowless bathrooms in Preston homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch. If your Preston bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check.
Most of Lancashire is supplied with soft water. 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
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
- Making good around the fan and checking that it extracts properly at the grille
- 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
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.
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.
