Commercial ventilation in Hertfordshire
A free survey, a clear specification and a fixed price for commercial ventilation in Hertfordshire.
- 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 Hertfordshire?
Our guide range in Hertfordshire is £3,195–£26,500 per system before VAT; a typical job (supply and extract for a 150 m² office) is £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 Hertfordshire and nearby
We cover all of Hertfordshire, including Watford, Hemel Hempstead, Stevenage, St Albans and Welwyn Garden City. Wherever your premises are, the survey, quote and installation follow the same steps.
Postcode districts we cover include AL1, AL8, EN7, HP4, SG6, SG13, WD6 and WD99. For commercial ventilation in Hertfordshire, 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
- Filters, attenuators and fire dampers where required
- Controls such as timers or CO2 sensors
- Air-flow measurement and balancing
- Commissioning records
Prices in Hertfordshire
Guide prices for Hertfordshire, set for the East of England. Your fixed price comes in writing.
| 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.
The steps for a project in Hertfordshire
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 Hertfordshire screened and tidy at the end of each day.
Balance
Air flows are measured and balanced to the design.
Points to plan for in Hertfordshire
Noise
Fans and grilles are selected and attenuated to keep noise down.
Shared buildings
In multi-let buildings, roof space, risers and plant areas are often controlled by a managing agent. We work to their permits and method-statement requirements.
Fire
Ducts passing through fire-rated walls or floors need fire dampers.
Conservation areas
Historic streets and listed buildings in and around Hertfordshire are more likely to need planning permission for outdoor units on visible elevations. We check with the local planning authority before work is booked.
Typical premises in Hertfordshire
- 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.
- Pubs and bars: cooling for busy bars, function rooms and cellars, sited with neighbours in mind.
- Healthcare and dental: clean, quiet cooling for surgeries, clinics, dental practices and care settings.
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 Hertfordshire
How much does commercial ventilation cost in Hertfordshire?
Guide prices in Hertfordshire 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 Buckinghamshire, Bedfordshire and London?
Yes. Alongside Hertfordshire, we also cover Buckinghamshire, Bedfordshire and London. Each has its own page with local guide prices.
Can ventilation and air conditioning work together?
Yes, and they should. We coordinate grilles, controls and set points so both systems work efficiently.
Does air conditioning provide fresh air?
No. Most air conditioning recirculates room air. Fresh air needs a ventilation system or openable windows.
Get a guide price for Hertfordshire
Free survey and fixed written quote. We reply with a guide price or to book the survey.