- Postcode districts
- HP1, HP2, HP3
- Nearby
- Berkhamsted, St Albans and North Watford
- 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 Hemel Hempstead?
In Hemel Hempstead, a bathroom extractor fan typically costs £265–£650 including VAT, based on East of England prices. 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
- Fan with timer or humidistat
Inline fan
- Ducting to a roof or soffit vent
Continuous extract
- Good for windowless rooms
Guide prices for Hemel Hempstead including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Hemel Hempstead
We cover every part of Hemel Hempstead, including HP1, HP2 and HP3, and nearby Berkhamsted (5 miles) and St Albans (5 miles).
Across a large town like Hemel Hempstead, homes range from older terraces to newer estates; the survey tells us which pipework and floor we are dealing with. Fans fitted in Hemel Hempstead bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room. For windowless bathrooms in Hemel Hempstead homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch.
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
- Making good around the fan and checking that it extracts properly at the grille
- 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
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
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.
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.
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.
