Swanley, Kent
Commercial ventilation design and installation in Swanley
Supply and extract with heat recovery for offices, shops, clinics and fit-outs. Covering Swanley and BR5, BR8 and DA4.
- From £8,750 + VAT per system
- Free survey

We can work as the ventilation subcontractor on Swanley fit-outs.
Swanley is about 119 miles from our base in Great Barr, Birmingham. We book Swanley visits by appointment and confirm the date in writing. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
Commercial ventilation in Swanley at a glance
- Town
- Swanley, Kent
- Postcode districts
- BR5, BR8 and DA4
- Nearby
- Bexley (3 miles), Chelsfield (3 miles) and Orpington (4 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach commercial ventilation in Swanley
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.
Guide prices in Swanley
| Work | Guide price |
|---|---|
| Small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) (per system) | £8,750–£18,650 + VAT |
| Office supply and extract ventilation with heat recovery, during a fit-out (per m² of floor) | £60–£140 + VAT |
Guide prices using South East rates. Prices exclude VAT. A guide price is not a quote: we confirm a fixed price in writing first.
Common reasons people call
- More staff than the system was designed for
- A fit-out or change of layout
- A change of use that needs a new ventilation design
Rules that apply 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.
Questions from Swanley
How do I get a price for commercial ventilation in Swanley?
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.
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.
What area around Swanley do you work in?
All of Kent. Near Swanley that includes Bexley, Chelsfield, Orpington and Sidcup.
Do you cover Swanley and nearby?
Yes. We cover Swanley and nearby places including Bexley, Chelsfield, Orpington and Sidcup. Send your postcode and we will confirm.
Send your Swanley drawings and occupancy numbers for a design and price.
Commercial ventilation near Swanley
More services in Swanley
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.