- Postcode districts
- SL9
- Nearby
- Gerrards Cross, Rickmansworth and Amersham
- Guide price
- £280–£650
- Typical time on site
- half a day
- Water
- Hard across most of Buckinghamshire
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Chalfont St Peter?
In Chalfont St Peter, a bathroom extractor fan typically costs £280–£650 including VAT, based on South East England prices. Prices in South East England run at about 12% 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
- Ducted to outside
Inline fan
- Grille in the ceiling
Continuous extract
- Low-energy fan running all the time
Guide prices for Chalfont St Peter including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Chalfont St Peter
In Chalfont St Peter we cover SL9; we also cover Gerrards Cross, 1.6 miles away, and Rickmansworth.
Being a smaller town does not change how we work in Chalfont St Peter: free survey, written quote, one team. We check the duct route at Chalfont St Peter surveys, because a short, straight run to outside matters more than the fan's headline figure. If your Chalfont St Peter bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check.
Supplies across most of Buckinghamshire are 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
- Making good around the fan and checking that it extracts properly at the grille
- A check of the room, any existing fan or vent, and the shortest route to the outside
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
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.
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.
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.
