Commercial ventilation design and installation in County Durham

We can work as the ventilation subcontractor on County Durham fit-outs.

If you are anywhere in County Durham, send the postcode and a few photos and we will tell you what we would recommend. Towns we cover include Hartlepool, Stockton-on-Tees, Durham, Chester-le-Street and Billingham.

Commercial ventilation in County Durham at a glance

Area: County Durham
Towns listed: 14, largest Darlington
Postcode districts: DH3, TS2, TS20, DH2, DH9 and DH8
Price region: North East
Survey: Free survey (UK mainland)

How we do it

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. We can work directly for occupiers and landlords, or as a subcontractor to fit-out and building contractors.

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 County Durham

Commercial ventilation design and installation guide prices in County Durham
Work	Guide price
Small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) (per system)	£7,300–£15,600 + VAT
Office supply and extract ventilation with heat recovery, during a fit-out (per m² of floor)	£50–£115 + VAT

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

When to get it looked at

A change of use that needs a new ventilation design
Windows the only source of fresh air
Old units that are noisy, inefficient or failing

Rules in England

English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. Workplaces must also be ventilated with a sufficient quantity of fresh or purified air under the Workplace (Health, Safety and Welfare) Regulations 1992.

How the job runs

Site survey
Design
Install
Commission
Hand over

Towns we cover in County Durham

Questions about commercial ventilation design and installation in County Durham

Are prices different in County Durham?

Our guide prices are adjusted by region. In County Durham we use North East rates, so small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) is typically £7,300 to £15,600 + 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 County Durham?

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 County Durham?

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 County Durham drawings and occupancy numbers for a design and price.