Commercial ventilation in Wiltshire
Commercial ventilation for businesses in Wiltshire — 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 Wiltshire?
Our guide range in Wiltshire is £3,050–£25,500 per system before VAT; a typical job (supply and extract for a 150 m² office) is £7,250–£17,150 plus VAT. Your exact price is fixed in writing once we have surveyed.
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 Wiltshire
We cover all of Wiltshire, including Swindon, Salisbury, Trowbridge, Chippenham and Melksham. Each town below has its own page with local guide prices.
Postcode districts we cover include BA12, RG17, SN4, SN10, SN14, SN38, SP3 and SP11. Buildings across Wiltshire 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 is included
- 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
Local guide prices for Wiltshire
Guide prices for Wiltshire, set for the South West. Your fixed price comes in writing.
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Toilet or kitchenette extract | £515–£1,500 | £618–£1,800 | per room |
| Supply and extract system, small premises | £3,050–£10,350 | £3,660–£12,420 | per system |
| CO2 demand control | £410–£1,295 | £492–£1,554 | per zone |
| Ductwork | £70–£205 | £84–£246 | per metre |
Ex VAT. Larger systems and fire-rated ductwork are priced from a full design.
How a job in Wiltshire 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 Wiltshire screened and tidy at the end of each day.
Balance
Air flows are measured and balanced to the design.
Before you book in Wiltshire
Noise
Fans and grilles are selected and attenuated to keep noise down.
Conservation areas
Historic streets and listed buildings in and around Wiltshire are more likely to need planning permission for outdoor units on visible elevations. We check with the local planning authority before work is booked.
Fire
Ducts passing through fire-rated walls or floors need fire dampers.
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.
Typical premises in Wiltshire
- Restaurants and cafés: dining rooms that stay comfortable next to a hot kitchen and a busy service.
- 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.
- Schools and education: classroom cooling, ventilation and IT room cooling, installed in the holidays.
Two rules matter for most businesses in England: GB F-gas rules (leak checks from 5 tonnes CO2e) and the periodic energy inspection for more than 12 kW of air conditioning.
FAQs for Wiltshire
How much does commercial ventilation cost in Wiltshire?
Guide prices in Wiltshire run from about £3,050 to £25,500 per system, plus VAT. A typical job (supply and extract for a 150 m² office) costs £7,250–£17,150 plus VAT. We fix the price in writing after a free survey.
Do you also cover Gloucestershire, Somerset and Oxfordshire?
Yes. Alongside Wiltshire, we also cover Gloucestershire, Somerset and Oxfordshire. Each has its own page with local guide prices.
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.
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 Wiltshire?
Free survey and fixed written quote. We reply with a guide price or to book the survey.