Friern Barnet, Greater London
Commercial ventilation design and installation in Friern Barnet
Supply and extract with heat recovery for offices, shops, clinics and fit-outs. Covering Friern Barnet and N11, N12 and N20.
- From £9,550 + VAT per system
- Free survey
We design and install supply and extract ventilation for Friern Barnet offices, clinics, salons and shops.
Customers in Friern Barnet can get a guide price online in a couple of minutes. It uses London rates, which is what we would charge for the same job anywhere in Greater London. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
Commercial ventilation in Friern Barnet at a glance
- Town
- Friern Barnet, Greater London
- Postcode districts
- N11, N12 and N20
- Nearby
- Muswell Hill (2 miles), Finchley (2 miles) and Wood Green (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach commercial ventilation in Friern Barnet
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.
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 Friern Barnet
| 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 |
These ranges use our London rates. Prices exclude VAT. You get a fixed written price before any work is booked.
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 that apply in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). Workplaces must also be ventilated with a sufficient quantity of fresh or purified air under the Workplace (Health, Safety and Welfare) Regulations 1992.
Questions from Friern Barnet
Is the survey free in Friern Barnet?
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 commercial ventilation cost?
A small office or shop with a single heat recovery unit typically costs £7,950 to £16,950 excluding VAT. Larger fit-outs are often priced at around £55 to £125 per square metre of floor, depending on design and ceiling access.
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.
How do I get a price for commercial ventilation in Friern Barnet?
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 Friern Barnet do you work in?
All of Greater London. Near Friern Barnet that includes Muswell Hill, Finchley, Wood Green and Palmers Green.
Ask about working to your fit-out programme in Friern Barnet.
Commercial ventilation near Friern Barnet
More services in Friern Barnet
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.