Commercial ventilation design and installation in Greater London

We design and install supply and extract ventilation for Greater London offices, clinics, salons and shops.

Greater London has every kind of building, from old terraces to new estates and business parks, and every job is designed around the building in front of us, not a standard kit.

Commercial ventilation in Greater London at a glance

Area: Greater London
Towns listed: 216, largest Brent
Postcode districts: RM8, RM9, IG3, RM8, RM1 and RM11
Price region: London
Survey: Free survey (UK mainland)

How we do it

Employers must make sure every enclosed workplace is ventilated by a sufficient quantity of fresh or purified air under the Workplace (Health, Safety and Welfare) Regulations 1992. In practice, designers work to rates such as 10 litres a second per person for offices, taken from Approved Document F and CIBSE guidance, and adjust for meeting rooms, kitchens and toilets. Typical jobs are fit-outs and refurbishments: a new tenant needs ventilation to match a new layout, an old system cannot keep up with more staff, or a change of use needs a fresh design.

Design and build or install-only

We design it, or install to a consultant's drawings.

Heat recovery supply and extract

One or more units with ductwork to diffusers, sized for occupancy.

Toilet and kitchenette extract

Dedicated extract for welfare areas.

Guide prices in Greater London

Commercial ventilation design and installation guide prices in Greater London
Work	Guide price
Small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) (per system)	£9,550–£20,350 + VAT
Office supply and extract ventilation with heat recovery, during a fit-out (per m² of floor)	£65–£150 + VAT

London rates shown. Prices exclude VAT. The fixed price is confirmed in writing after we have seen the job.

Common reasons people call

Old units that are noisy, inefficient or failing
Stuffy meeting rooms and afternoon drowsiness
More staff than the system was designed for

Rules in England

In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). Employers have a separate duty under the Workplace Regulations 1992 to provide effective and suitable ventilation.

How the job runs

Site survey
Design
Install
Commission
Hand over

Towns we cover in Greater London

Questions about commercial ventilation design and installation in Greater London

Are prices different in Greater London?

Our guide prices are adjusted by region. In Greater London we use London rates, so small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) is typically £9,550 to £20,350 + VAT per system.

How much fresh air does an office need?

A common design rate for offices is 10 litres a second per person, used in Approved Document F and CIBSE guidance, with more for meeting rooms and areas with higher occupancy.

Is ventilation a legal requirement in the workplace?

Yes. The Workplace (Health, Safety and Welfare) Regulations 1992 require effective and suitable ventilation with a sufficient quantity of fresh or purified air in every enclosed workplace.

Is the survey free in Greater London?

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.

Which rules apply to ventilation in Greater London?

In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.

Send your Greater London drawings and occupancy numbers for a design and price.