Commercial ventilation in Dorset
A free survey, a clear specification and a fixed price for commercial ventilation in Dorset.
- 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 Dorset?
In Dorset, guide prices run from about £3,050 to £25,500 per system, plus VAT. A typical job (supply and extract for a 150 m² office) usually comes to £7,250–£17,150 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 Dorset
We cover all of Dorset, including Bournemouth, Poole, Weymouth and Christchurch. Wherever your premises are, the survey, quote and installation follow the same steps.
Postcode districts we cover include BA22, BH5, BH11, BH17, BH23, DT4, DT10 and TA20. For commercial ventilation in Dorset, the survey looks at how the space is used, where equipment and ductwork can go and what the electrical supply can take.
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
Commercial ventilation prices in Dorset
Guide prices for Dorset, 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 it works in Dorset
Assess
We work out how many people use each space and the fresh-air rate needed. For sites in Dorset 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.
Before you book in Dorset
Heat recovery
Bringing in cold air in winter costs energy. Heat recovery units reclaim much of it.
Conservation areas
Historic streets and listed buildings in and around Dorset are more likely to need planning permission for outdoor units on visible elevations. We check with the local planning authority before work is booked.
Noise
Fans and grilles are selected and attenuated to keep noise down.
Neighbours and noise
Outdoor units near flats — common above shops — need careful siting so noise at neighbours' windows stays low. We choose positions and quieter units with that in mind.
Typical premises in Dorset
- 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.
- Schools and education: classroom cooling, ventilation and IT room cooling, installed in the holidays.
- Restaurants and cafés: dining rooms that stay comfortable next to a hot kitchen and a busy service.
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.
Common questions from businesses in Dorset
How much does commercial ventilation cost in Dorset?
Guide prices in Dorset 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 the Isle of Wight, Hampshire and Wiltshire?
Yes. Alongside Dorset, we also cover the Isle of Wight, Hampshire and Wiltshire. Each has its own page with local guide prices.
Does air conditioning provide fresh air?
No. Most air conditioning recirculates room air. Fresh air needs a ventilation system or openable windows.
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 Dorset?
Free survey and fixed written quote. We reply with a guide price or to book the survey.