Commercial ventilation in St Albans
A free survey, a clear specification and a fixed price for commercial ventilation in St Albans.
- Free site survey and fixed written quote
- Equipment, positions and price set out in writing
- Work planned around your opening hours
How much does commercial ventilation cost in St Albans?
In St Albans, guide prices run from about £3,195 to £26,500 per system, plus VAT. A typical job (supply and extract for a 150 m² office) usually comes to £7,500–£17,795 plus VAT. You get a fixed written quote after the free survey.
Commercial ventilation brings outdoor air into a building and removes stale air, using fans and ductwork to supply and extract air at the rates needed for the number of people and the activity.
Covering St Albans and nearby
In St Albans, typical commercial premises include town-centre shops and offices, surgeries, gyms and units on business parks. Watford is about 11 km away.
That includes premises in AL1 and AL3 and the surrounding districts. Neighbouring towns we cover include Harpenden, Hatfield and Hemel Hempstead. For commercial ventilation in St Albans, the survey looks at how the space is used, where equipment and ductwork can go and what the electrical supply can take.
What is included
- Fresh-air rate calculation for each space
- Supply and extract fans, ductwork and grilles
- Controls such as timers or CO2 sensors
- Air-flow measurement and balancing
- Commissioning records
Commercial ventilation prices in St Albans
These guide prices are adjusted for the East of England, where labour and access costs run about 8% above the UK guide.
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Toilet or kitchenette extract | £535–£1,550 | £642–£1,860 | per room |
| Supply and extract system, small premises | £3,195–£10,750 | £3,834–£12,900 | per system |
| CO2 demand control | £425–£1,350 | £510–£1,620 | per zone |
| Ductwork | £70–£210 | £84–£252 | per metre |
Ex VAT. Larger systems and fire-rated ductwork are priced from a full design.
How a job in St Albans works
Assess
We work out how many people use each space and the fresh-air rate needed.
Design
Fan, duct and grille sizes are designed for air flow, noise and energy use.
Install
Ductwork and fans are installed and connected to controls. We keep work areas in St Albans screened and tidy at the end of each day.
Balance
Air flows are measured and balanced to the design.
Points to plan for in St Albans
Fire
Ducts passing through fire-rated walls or floors need fire dampers.
Working hours
Most St Albans businesses prefer noisy work outside trading hours. Early starts, evenings and weekends can be arranged and are priced up front.
Noise
Fans and grilles are selected and attenuated to keep noise down.
Roof and height work
Flat roofs, high walls and atriums need the right access equipment and edge protection. We plan towers, MEWPs or scaffold before the job, not on the day.
Premises we work in around St Albans
- Healthcare and dental: clean, quiet cooling for surgeries, clinics, dental practices and care settings.
- Schools and education: classroom cooling, ventilation and IT room cooling, installed in the holidays.
- Restaurants and cafés: dining rooms that stay comfortable next to a hot kitchen and a busy service.
- Offices: zoned cooling and heating for open-plan floors, meeting rooms and comms rooms.
Compliance in England: refrigerant work falls under GB F-gas rules, and buildings with more than 12 kW of air conditioning in total need a periodic energy inspection (often called TM44).
Questions about commercial ventilation in St Albans
How much does commercial ventilation cost in St Albans?
Guide prices in St Albans run from about £3,195 to £26,500 per system, plus VAT. A typical job (supply and extract for a 150 m² office) costs £7,500–£17,795 plus VAT. We fix the price in writing after a free survey.
Do you also cover Harpenden, Hatfield and Hemel Hempstead?
Yes. Alongside St Albans, we also cover Harpenden, Hatfield and Hemel Hempstead. Each has its own page with local guide prices.
Which postcodes do you cover in St Albans?
All of them, including AL1 and AL3. Give us your postcode when you enquire and we will confirm the visit details.
Does air conditioning provide fresh air?
No. Most air conditioning recirculates room air. Fresh air needs a ventilation system or openable windows.
How much fresh air does an office need?
Guidance for offices is typically around 10 litres per second per person, with more for rooms with higher pollutant loads. We calculate it per space.
Need commercial ventilation in St Albans?
Free survey and fixed written quote. We reply with a guide price or to book the survey.