Farnham, Surrey
Extractor fan installation in Farnham
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested. Covering Farnham and GU9, GU10 and GU11.
- From £195 inc VAT per fan
- Free survey
A common fault in Farnham homes is a bathroom fan ducted into the loft instead of outside.
Whether the property is in the middle of Farnham or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
Extractor fans in Farnham at a glance
- Town
- Farnham, Surrey
- Postcode districts
- GU9, GU10 and GU11
- Nearby
- Hale (1 mile), Aldershot (3 miles) and Fleet (5 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach extractor fans in Farnham
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 Farnham
| Work | Guide price |
|---|---|
| New extractor fan through an outside wall (core drilled, wired, tested) (per fan) | £380–£600 inc VAT |
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £490–£825 inc VAT |
| Inline fan for a shower room or en-suite (loft-mounted, one or two ceiling grilles) (per room) | £600–£975 inc VAT |
These ranges use our South East rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
When to get it looked at
- Mirror still steamed up 20 minutes after a shower
- Mould on the bathroom ceiling or around the window
- The fan runs but a sheet of toilet paper does not stick to the grille
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Farnham
Is the survey free in Farnham?
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 Farnham?
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 Farnham do you work in?
All of Surrey. Near Farnham that includes Hale, Aldershot, Fleet and Farnborough.
Send a photo of the existing fan and the outside wall and we will price your Farnham job quickly.
Extractor fans near Farnham
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