- Postcode districts
- TR15, TR16
- Nearby
- Camborne, Truro and Falmouth
- Guide price
- £255–£600
- Typical time on site
- half a day
- Water
- Soft across most of Cornwall
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Redruth?
Guide price in Redruth: £255–£600 including VAT, depending on the room and what you choose. 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 Redruth including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Redruth
We work right across Redruth — TR15 and TR16 — and in neighbouring Camborne and Truro.
In Redruth, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. Fans fitted in Redruth bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room. We check the duct route at Redruth surveys, because a short, straight run to outside matters more than the fan's headline figure.
Supplies across most of Cornwall 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
- 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
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
Decisions to make first
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.
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.

