- Postcode districts
- SG8
- Nearby
- Letchworth Garden City, Biggleswade and Saffron Walden
- Guide price
- £265–£650
- Typical time on site
- half a day
- Water
- Very hard across most of Cambridgeshire
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Royston?
Our guide price for a bathroom extractor fan in Royston is £265–£650 including VAT. Prices in East of England run at about 6% above 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
- Wired to regulations
Inline fan
- Quiet fan in the loft void
Continuous extract
- Boost on humidity
Guide prices for Royston including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Royston
We cover every part of Royston, including SG8, and nearby Letchworth Garden City (9.8 miles) and Biggleswade (10.6 miles).
Being a smaller town does not change how we work in Royston: free survey, written quote, one team. In Royston flats, a new vent through an outside wall may need freeholder consent, so we raise it at the survey. If your Royston bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check.
Water across much of Cambridgeshire is very 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
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- A check of the room, any existing fan or vent, and the shortest route to the outside
- 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.
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.

