St Helier, Greater London
Extractor fan installation in St Helier
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested. Covering St Helier and SM1, SM4 and SM5.
- From £210 inc VAT per fan
- Free survey
If the bathroom mirror in your St Helier home stays steamed up, the fan probably is not moving enough air.
Customers in St Helier can get a guide price online in a couple of minutes. It uses London rates, which is what we would charge for the same job anywhere in Greater London. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
Extractor fans in St Helier at a glance
- Town
- St Helier, Greater London
- Postcode districts
- SM1, SM4 and SM5
- Nearby
- Carshalton (1 mile), Morden (1 mile) and Mitcham (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach extractor fans in St Helier
The rate a fan delivers through a real duct run is often far lower than the number on the box, which is why we size to the room and test the result. For England, Approved Document F gives minimum intermittent extract rates: 15 litres a second for a bathroom, 30 for a kitchen with a cooker hood (60 without one), 30 for a utility room and 6 for a WC.
Kitchen extract and cooker hoods
A wall or window fan, or a cooker hood ducted outside rather than recirculating.
Like-for-like replacement
A new fan on the existing duct and wiring, often with an overrun timer or humidity sensor.
Guide prices in St Helier
| Work | Guide price |
|---|---|
| Like-for-like extractor fan replacement (existing duct and wiring) (per fan) | £210–£355 inc VAT |
| New extractor fan through an outside wall (core drilled, wired, tested) (per fan) | £415–£650 inc VAT |
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £525–£900 inc VAT |
These ranges use our London rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
When to get it looked at
- A kitchen with a recirculating hood and condensation on the windows
- Mirror still steamed up 20 minutes after a shower
- Mould on the bathroom ceiling or around the window
Rules that apply in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.
Questions from St Helier
Is the survey free in St Helier?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
How much does it cost to fit an extractor fan?
Replacing a fan on an existing duct usually costs £175 to £295 including VAT. A new fan through an outside wall is typically £345 to £545, and a fan ducted to outside through the loft £445 to £745.
What size extractor fan does a bathroom need?
In England a bathroom fan should extract at least 15 litres a second, measured at the fan, under Approved Document F. Long or bendy duct runs reduce flow, so the fan often needs to be rated higher than the minimum.
How do I get a price for new extractor fans in St Helier?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
What area around St Helier do you work in?
All of Greater London. Near St Helier that includes Carshalton, Morden, Mitcham and Wallington.
Tell us how many rooms need fans in your St Helier home and we will quote them together.
Extractor fans near St Helier
More services in St Helier
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.