- Postcode districts
- SG5, SG6, SG15
- Nearby
- Hitchin, Stevenage and Biggleswade
- 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 Letchworth Garden City?
Our guide price for a bathroom extractor fan in Letchworth Garden City is £265–£650 including VAT. 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
- Fan with timer or humidistat
Inline fan
- Ducting to a roof or soffit vent
Continuous extract
- Good for windowless rooms
Guide prices for Letchworth Garden City including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Letchworth Garden City
As well as Letchworth Garden City itself (SG5, SG6 and SG15), we survey in Hitchin, Stevenage and Biggleswade.
In Letchworth Garden City, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. If your Letchworth Garden City 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. If your Letchworth Garden City bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check.
Water across much of Hertfordshire 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
- A backdraught shutter and external grille, so cold air does not blow back in
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- 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
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.
Noise
Compare the stated noise level in decibels. Inline fans and low-speed continuous fans are much quieter in the room than budget axial fans.
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.
