- Postcode districts
- KT12, TW16, TW17
- Nearby
- Walton-on-Thames, West Molesey and Ashford
- Guide price
- £280–£650
- Typical time on site
- half a day
- Water
- Hard across most of Surrey
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Sunbury-on-Thames?
Our guide price for a bathroom extractor fan in Sunbury-on-Thames is £280–£650 including VAT. Labour costs in South East England put local prices at about 12% above 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 Sunbury-on-Thames including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Sunbury-on-Thames
We cover every part of Sunbury-on-Thames, including KT12, TW16 and TW17, and nearby Walton-on-Thames (1.2 miles) and West Molesey (1.7 miles).
Homes in and around Sunbury-on-Thames vary, so we look at the floor, the walls and the water system before we price anything. We check the duct route at Sunbury-on-Thames surveys, because a short, straight run to outside matters more than the fan's headline figure. In Sunbury-on-Thames flats, a new vent through an outside wall may need freeholder consent, so we raise it at the survey.
Water across much of Surrey 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
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- 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
- A check of the room, any existing fan or vent, and the shortest route to the outside
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.
Intermittent or continuous
An intermittent fan runs during and after use. A continuous fan runs quietly all the time at a low rate and boosts when humidity rises.
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.
