- Postcode districts
- TN13
- Nearby
- Tonbridge, Swanley and Hartley
- Guide price
- £280–£650
- Typical time on site
- half a day
- Water
- Very hard across most of Kent
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Sevenoaks?
In Sevenoaks, 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 Sevenoaks including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Sevenoaks
We cover every part of Sevenoaks, including TN13, and nearby Tonbridge (6.5 miles) and Swanley (8.6 miles).
In Sevenoaks, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. If your Sevenoaks bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check. If your Sevenoaks home is listed or in a period terrace, a fan ducted through the loft to a roof vent can avoid a new hole in the front wall, though consent may still apply.
Most of Kent has very hard water. 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
- Run-on timer, humidistat or light-linked switching set up to suit how the room is used
- A check of the room, any existing fan or vent, and the shortest route to the outside
- Making good around the fan and checking that it extracts properly at the grille
Decisions to make first
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.
Replacement air
A fan needs air to replace what it removes, so leave a gap of around 10 mm under the door or fit a door grille. A sealed room starves the fan.
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.
