Commercial ventilation design and installation in Northamptonshire

Commercial ventilation in Northamptonshire is often part of an office or shop fit-out.

Northamptonshire 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 Northamptonshire at a glance

Area: Northamptonshire
Towns listed: 8, largest Northampton
Postcode districts: NN9, NN10, NN11, NN13, LE16 and NN16
Price region: East Midlands
Survey: Free survey (UK mainland)

What commercial ventilation design and installation involves

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.

Demand control

CO2 or occupancy sensors that slow the system when rooms are empty.

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.

Guide prices in Northamptonshire

Commercial ventilation design and installation guide prices in Northamptonshire
Work	Guide price
Small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) (per system)	£7,800–£16,600 + VAT
Office supply and extract ventilation with heat recovery, during a fit-out (per m² of floor)	£55–£125 + VAT

Guide prices using East Midlands rates. Prices exclude VAT. A guide price is not a quote: we confirm a fixed price in writing first.

Common reasons people call

Windows the only source of fresh air
Old units that are noisy, inefficient or failing
Stuffy meeting rooms and afternoon drowsiness

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 Northamptonshire

Questions about commercial ventilation design and installation in Northamptonshire

Is the survey free in Northamptonshire?

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 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.

Which rules apply to ventilation in Northamptonshire?

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.

Which towns in Northamptonshire do you cover?

All of Northamptonshire, including Brackley, Desborough, Northampton, Corby and Kettering. If your town is not listed, send the postcode and we will confirm.

Send your Northamptonshire drawings and occupancy numbers for a design and price.