Welwyn Garden City, Hertfordshire
Commercial ventilation design and installation in Welwyn Garden City
Supply and extract with heat recovery for offices, shops, clinics and fit-outs. Covering Welwyn Garden City and AL6, AL7 and AL8.
- From £8,350 + VAT per system
- Free survey
We can work as the ventilation subcontractor on Welwyn Garden City fit-outs.
Work in Welwyn Garden City follows the rules for England and finishes with a written record of what was fitted and how it was set up.
Commercial ventilation in Welwyn Garden City at a glance
- Town
- Welwyn Garden City, Hertfordshire
- Postcode districts
- AL6, AL7 and AL8
- Nearby
- Hatfield (3 miles), Codicote (4 miles) and Hertford (6 miles)
- Price region
- East of England
- 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.
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.
Guide prices in Welwyn Garden City
| Work | Guide price |
|---|---|
| Small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) (per system) | £8,350–£17,800 + VAT |
| Office supply and extract ventilation with heat recovery, during a fit-out (per m² of floor) | £60–£130 + VAT |
Guide prices using East of England rates. Prices exclude VAT. A guide price is not a quote: we confirm a fixed price in writing first.
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. 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 Welwyn Garden City
Do you cover Welwyn Garden City and nearby?
Yes. We cover Welwyn Garden City and nearby places including Hatfield, Codicote, Hertford and St Albans. Send your postcode and we will confirm.
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.
What is the price of commercial ventilation in Welwyn Garden City?
Guide prices for Welwyn Garden City use East of England rates: small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) is typically £8,350 to £17,800 + VAT per system. We confirm a fixed price in writing before any work starts.
Is the survey free in Welwyn Garden City?
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.
Send your Welwyn Garden City drawings and occupancy numbers for a design and price.
Commercial ventilation near Welwyn Garden City
More services in Welwyn Garden City
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.