- Postcode districts
- RH12
- Nearby
- Crawley, Horley and Haywards Heath
- Guide price
- £280–£650
- Typical time on site
- half a day
- Water
- Hard across most of West Sussex
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Horsham?
For Horsham, our guide range for a bathroom extractor fan is £280 to £650 including VAT. We adjust the national guide for South East England, where prices are typically about 12% above the UK average. 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 Horsham including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Horsham
As well as Horsham itself (RH12), we survey in Crawley, Horley and Haywards Heath.
In Horsham, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. In Horsham flats, a new vent through an outside wall may need freeholder consent, so we raise it at the survey. If your Horsham bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check.
Water across much of West Sussex 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
- 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
- Run-on timer, humidistat or light-linked switching set up to suit how the room is used
Decisions to make first
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.
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.
