St Helier, Greater London
Commercial ventilation design and installation in St Helier
Supply and extract with heat recovery for offices, shops, clinics and fit-outs. Covering St Helier and SM1, SM4 and SM5.
- From £9,550 + VAT per system
- Free survey

We can work as the ventilation subcontractor on St Helier fit-outs.
Work in St Helier follows the rules for England and finishes with a written record of what was fitted and how it was set up.
Commercial ventilation in St Helier at a glance
- Town
- St Helier, Greater London
- Postcode districts
- SM1, SM4 and SM5
- Nearby
- Carshalton (1 mile), Morden (1 mile) and Mitcham (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
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.
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 St Helier
| 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
- A fit-out or change of layout
- A change of use that needs a new ventilation design
- Windows the only source of fresh air
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. Employers have a separate duty under the Workplace Regulations 1992 to provide effective and suitable ventilation.
Questions from St Helier
What area around St Helier do you work in?
All of Greater London. Near St Helier that includes Carshalton, Morden, Mitcham and Wallington.
Can the system cool as well?
Ventilation alone moves air; it does not cool much. Where cooling is needed we can coordinate with the air conditioning installer.
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.
Do you cover St Helier and nearby?
Yes. We cover St Helier and nearby places including Carshalton, Morden, Mitcham and Wallington. Send your postcode and we will confirm.
What is the price of commercial ventilation in St Helier?
Guide prices for St Helier use London rates: 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. We confirm a fixed price in writing before any work starts.
Ask about working to your fit-out programme in St Helier.
Commercial ventilation near St Helier
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