Commercial ventilation in Carshalton
A free survey, a clear specification and a fixed price for commercial ventilation in Carshalton.
- 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 Carshalton?
Budget roughly £3,795–£31,500 per system ex VAT in Carshalton. For a typical job — supply and extract for a 150 m² office — expect £8,895–£20,995 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.
Working in Carshalton
Premises in Carshalton are often in mixed-use buildings with shared roofs and tight access, so outdoor unit positions are agreed early.
We cover every Carshalton postcode, including SM5. Nearby, we also cover Wallington (about 1 km), Sutton (about 3 km) and Mitcham (about 4 km). Buildings across London range from converted period offices to modern units with deep ceiling voids, so we measure each site rather than relying on a standard package.
What we do
- Fresh-air rate calculation for each space
- Supply and extract fans, ductwork and grilles
- Filters, attenuators and fire dampers where required
- Controls such as timers or CO2 sensors
- Air-flow measurement and balancing
Local guide prices for Carshalton
These guide prices are adjusted for London, where labour and access costs run about 28% above the UK guide.
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Toilet or kitchenette extract | £635–£1,850 | £762–£2,220 | per room |
| Supply and extract system, small premises | £3,795–£12,750 | £4,554–£15,300 | per system |
| CO2 demand control | £505–£1,595 | £606–£1,914 | per zone |
| Ductwork | £85–£245 | £102–£294 | per metre |
Ex VAT. Larger systems and fire-rated ductwork are priced from a full design.
The steps for a project in Carshalton
Assess
We work out how many people use each space and the fresh-air rate needed. For sites in Carshalton 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.
Local points to consider
Heat recovery
Bringing in cold air in winter costs energy. Heat recovery units reclaim much of it.
Access and parking
Town-centre jobs in Carshalton often come down to access — loading restrictions, parking for the van and getting equipment onto a roof. We check this at survey and plan deliveries around it.
Fire
Ducts passing through fire-rated walls or floors need fire dampers.
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.
Types of premises we cover in Carshalton
- Offices: zoned cooling and heating for open-plan floors, meeting rooms and comms rooms.
- Salons and spas: comfortable salons and treatment rooms despite dryers, lamps and steam.
- Pubs and bars: cooling for busy bars, function rooms and cellars, sited with neighbours in mind.
- Restaurants and cafés: dining rooms that stay comfortable next to a hot kitchen and a busy service.
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 Carshalton?
Guide prices in Carshalton run from about £3,795 to £31,500 per system, plus VAT. A typical job (supply and extract for a 150 m² office) costs £8,895–£20,995 plus VAT. We fix the price in writing after a free survey.
Do you also cover Wallington, Sutton and Mitcham?
Yes. Alongside Carshalton, we also cover Wallington, Sutton and Mitcham. Each has its own page with local guide prices.
Which postcodes do you cover in Carshalton?
All of them, including SM5. Give us your postcode when you enquire and we will confirm the visit details.
Can ventilation and air conditioning work together?
Yes, and they should. We coordinate grilles, controls and set points so both systems work efficiently.
Do you install kitchen extraction?
Commercial kitchen canopies are a specialist area. We focus on general supply and extract, toilets and heat recovery, and can advise on kitchen requirements.
Talk to us about your premises in Carshalton
Free survey and fixed written quote. We reply with a guide price or to book the survey.