Extractor fan installation in Knightsbridge and Belgravia

We fit bathroom, kitchen and utility fans across Knightsbridge and Belgravia, sized to the room rather than the cheapest box.

For extractor fan installation in Knightsbridge and Belgravia, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.

Extractor fans in Knightsbridge and Belgravia at a glance

Town: Knightsbridge and Belgravia, Greater London
Postcode districts: SW1X, SW7 and W1K
Nearby: West End of London (1 mile), Hyde Park (1 mile) and Bayswater (1 mile)
Price region: London
Survey: Free survey (UK mainland)

Extractor fans for Knightsbridge and Belgravia homes

Many existing fans were never doing their job: undersized, ducted into the loft space, fitted with a flex duct crushed in the joists, or switched off by occupants because they were noisy. 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.

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 Knightsbridge and Belgravia

Extractor fan installation guide prices in Knightsbridge and Belgravia
Work	Guide price
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
Inline fan for a shower room or en-suite (loft-mounted, one or two ceiling grilles) (per room)	£650–£1,075 inc VAT

London rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.

Common reasons people call

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

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 Knightsbridge and Belgravia

What area around Knightsbridge and Belgravia do you work in?

All of Greater London. Near Knightsbridge and Belgravia that includes West End of London, Hyde Park, Bayswater and Lancaster Gate.

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.

Do you cover Knightsbridge and Belgravia and nearby?

Yes. We cover Knightsbridge and Belgravia and nearby places including West End of London, Hyde Park, Bayswater and Lancaster Gate. Send your postcode and we will confirm.

What is the price of new extractor fans in Knightsbridge and Belgravia?

Guide prices for Knightsbridge and Belgravia use London rates: like-for-like extractor fan replacement (existing duct and wiring) is typically £210 to £355 inc VAT per fan. We confirm a fixed price in writing before any work starts.

We can usually fit a replacement fan in Knightsbridge and Belgravia in a single short visit.