Commercial ventilation in Portsmouth
A free survey, a clear specification and a fixed price for commercial ventilation in Portsmouth.
- 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 Portsmouth?
Budget roughly £3,395–£27,995 per system ex VAT in Portsmouth. For a typical job — supply and extract for a 150 m² office — expect £7,995–£18,995 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.
Our coverage in Portsmouth
In Portsmouth, commercial premises range from city-centre office blocks and shopping streets to restaurants, hotels and industrial estates.
We work across Portsmouth's postcode districts, including PO5. Nearby, we also cover Gosport (about 3 km), Fareham (about 9 km) and Havant (about 10 km). We plan work in Portsmouth so the noisy parts happen when they disturb your business least.
What you get
- 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
Commercial ventilation prices in Portsmouth
Prices below include our regional adjustment for the South East (15% above the UK guide).
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Toilet or kitchenette extract | £570–£1,650 | £684–£1,980 | per room |
| Supply and extract system, small premises | £3,395–£11,450 | £4,074–£13,740 | per system |
| CO2 demand control | £455–£1,450 | £546–£1,740 | per zone |
| Ductwork | £75–£225 | £90–£270 | per metre |
Ex VAT. Larger systems and fire-rated ductwork are priced from a full design.
How it works in Portsmouth
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. In Portsmouth we agree timings around your opening hours.
Balance
Air flows are measured and balanced to the design.
Things to check in Portsmouth
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.
Building Regulations
New or altered ventilation in England must meet Approved Document F. We design to it and hand over the commissioning records.
Leased premises
If your Portsmouth 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.
Types of premises we cover in Portsmouth
- Schools and education: classroom cooling, ventilation and IT room cooling, installed in the holidays.
- Healthcare and dental: clean, quiet cooling for surgeries, clinics, dental practices and care settings.
- Restaurants and cafés: dining rooms that stay comfortable next to a hot kitchen and a busy service.
- Salons and spas: comfortable salons and treatment rooms despite dryers, lamps and steam.
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.
FAQs for Portsmouth
How much does commercial ventilation cost in Portsmouth?
Guide prices in Portsmouth run from about £3,395 to £27,995 per system, plus VAT. A typical job (supply and extract for a 150 m² office) costs £7,995–£18,995 plus VAT. We fix the price in writing after a free survey.
Do you also cover Gosport, Fareham and Havant?
Yes. Alongside Portsmouth, we also cover Gosport, Fareham and Havant. Each has its own page with local guide prices.
Which postcodes do you cover in Portsmouth?
All of them, including PO5. 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.
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 Portsmouth?
Free survey and fixed written quote. We reply with a guide price or to book the survey.