Commercial ventilation in Chelmsford
Commercial ventilation for businesses in Chelmsford — surveyed, designed and priced in writing before any work starts.
- 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 Chelmsford?
In Chelmsford, 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. The fixed price follows a 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.
Where we work around Chelmsford
Chelmsford is a large town in Essex, with a busy centre, retail parks and industrial estates on its edges. Basildon is about 19 km away.
That includes premises in CM1 and CM99 and the surrounding districts. Nearby, we also cover Billericay (about 12 km), Witham (about 14 km) and Maldon (about 14 km). Commercial ventilation in Chelmsford is priced from a written specification that lists the equipment, positions, controls and commissioning.
Included as standard
- 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
Guide prices in Chelmsford
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 it works in Chelmsford
Assess
We work out how many people use each space and the fresh-air rate needed. For sites in Chelmsford we confirm access and parking beforehand.
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.
Balance
Air flows are measured and balanced to the design.
What to think about in Chelmsford
Heat recovery
Bringing in cold air in winter costs energy. Heat recovery units reclaim much of it.
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.
Noise
Fans and grilles are selected and attenuated to keep noise down.
Leased premises
If your Chelmsford premises are leased, the landlord's written consent is usually needed for external units, wall penetrations and roof access. We provide drawings and data sheets for the request.
Typical premises in Chelmsford
- Offices: zoned cooling and heating for open-plan floors, meeting rooms and comms rooms.
- Gyms and leisure: high-capacity cooling and fresh air for gym floors, studios and changing rooms.
- Salons and spas: comfortable salons and treatment rooms despite dryers, lamps and steam.
- Schools and education: classroom cooling, ventilation and IT room cooling, installed in the holidays.
In England, systems holding 5 tonnes CO2 equivalent of refrigerant or more fall under GB F-gas rules, with regular leak checks and records; buildings with more than 12 kW of air conditioning in total also need a periodic energy inspection.
Your questions answered
How much does commercial ventilation cost in Chelmsford?
Guide prices in Chelmsford 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 Billericay, Witham and Maldon?
Yes. Alongside Chelmsford, we also cover Billericay, Witham and Maldon. Each has its own page with local guide prices.
Which postcodes do you cover in Chelmsford?
All of them, including CM1 and CM99. 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.
Can ventilation and air conditioning work together?
Yes, and they should. We coordinate grilles, controls and set points so both systems work efficiently.
Talk to us about your premises in Chelmsford
Free survey and fixed written quote. We reply with a guide price or to book the survey.