- Postcode districts
- AL9, AL10
- Nearby
- Welwyn Garden City, St Albans and Potters Bar
- Guide price
- £265–£650
- Typical time on site
- half a day
- Water
- Very hard across most of Hertfordshire
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Hatfield?
In Hatfield, a bathroom extractor fan typically costs £265–£650 including VAT, based on East of England prices. We adjust the national guide for East of England, where prices are typically about 6% above the UK average. 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 Hatfield including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Hatfield
As well as Hatfield itself (AL9 and AL10), we survey in Welwyn Garden City, St Albans and Potters Bar.
In Hatfield, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. If your Hatfield bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check. We check the duct route at Hatfield surveys, because a short, straight run to outside matters more than the fan's headline figure.
Supplies across most of Hertfordshire are 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
- 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
Decisions to make first
Wall or ceiling
A wall fan on an outside wall is the simplest. A ceiling fan over the shower takes steam away at source but needs ducting through the loft.
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.
