Commercial ventilation in Welling
Commercial ventilation for businesses in Welling — 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 Welling?
Budget roughly £3,795–£31,500 per system ex VAT in Welling. 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 Welling
In Welling, commercial premises range from street-level shops and restaurants to offices in converted and modern buildings, many with managing agents and landlord consents to work through.
We cover every Welling postcode, including DA16. Nearby, we also cover Bexley (about 4 km), Eltham (about 4 km) and Thamesmead (about 5 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 you get
- Fresh-air rate calculation for each space
- Supply and extract fans, ductwork and grilles
- Filters, attenuators and fire dampers where required
- Air-flow measurement and balancing
- Commissioning records
Prices in Welling
Guide prices for Welling, set for London. Your fixed price comes in writing.
| 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 Welling
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 Welling screened and tidy at the end of each day.
Balance
Air flows are measured and balanced to the design.
Points to plan for in Welling
Heat recovery
Bringing in cold air in winter costs energy. Heat recovery units reclaim much of it.
Leased premises
If your Welling 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.
Fire
Ducts passing through fire-rated walls or floors need fire dampers.
Access and parking
Town-centre jobs in Welling 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.
Typical premises in Welling
- Schools and education: classroom cooling, ventilation and IT room cooling, installed in the holidays.
- Offices: zoned cooling and heating for open-plan floors, meeting rooms and comms rooms.
- Healthcare and dental: clean, quiet cooling for surgeries, clinics, dental practices and care settings.
- Salons and spas: comfortable salons and treatment rooms despite dryers, lamps and steam.
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 Welling
How much does commercial ventilation cost in Welling?
Guide prices in Welling 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 Bexley, Eltham and Thamesmead?
Yes. Alongside Welling, we also cover Bexley, Eltham and Thamesmead. Each has its own page with local guide prices.
Which postcodes do you cover in Welling?
All of them, including DA16. Give us your postcode when you enquire and we will confirm the visit details.
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.
Can ventilation and air conditioning work together?
Yes, and they should. We coordinate grilles, controls and set points so both systems work efficiently.
Get a guide price for Welling
Free survey and fixed written quote. We reply with a guide price or to book the survey.