Commercial ventilation in Castlereagh
A free survey, a clear specification and a fixed price for commercial ventilation in Castlereagh.
- 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 Castlereagh?
Budget roughly £2,695–£22,500 per system ex VAT in Castlereagh. For a typical job — supply and extract for a 150 m² office — expect £6,395–£15,195 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.
Castlereagh and surrounding areas
Castlereagh has a compact centre of shops, cafés and offices, with business units on its outskirts. Belfast is about 4 km away.
That includes premises in BT5 and BT6 and the surrounding districts. We also cover Belfast, Newtownabbey and Lisburn, all within easy reach of Castlereagh. Commercial ventilation in Castlereagh is priced from a written specification that lists the equipment, positions, controls and commissioning.
What we do
- 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
Guide prices in Castlereagh
Prices below include our regional adjustment for Northern Ireland (8% below the UK guide).
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Toilet or kitchenette extract | £455–£1,350 | £546–£1,620 | per room |
| Supply and extract system, small premises | £2,695–£9,150 | £3,234–£10,980 | per system |
| CO2 demand control | £365–£1,150 | £438–£1,380 | per zone |
| Ductwork | £60–£180 | £72–£216 | per metre |
Ex VAT. Larger systems and fire-rated ductwork are priced from a full design.
How a job in Castlereagh 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 Castlereagh screened and tidy at the end of each day.
Balance
Air flows are measured and balanced to the design.
What to think about in Castlereagh
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.
Noise
Fans and grilles are selected and attenuated to keep noise down.
Leased premises
If your Castlereagh 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.
Typical premises in Castlereagh
- Gyms and leisure: high-capacity cooling and fresh air for gym floors, studios and changing rooms.
- Healthcare and dental: clean, quiet cooling for surgeries, clinics, dental practices and care settings.
- Offices: zoned cooling and heating for open-plan floors, meeting rooms and comms rooms.
- Restaurants and cafés: dining rooms that stay comfortable next to a hot kitchen and a busy service.
In Northern Ireland, systems holding 5 tonnes CO2 equivalent of refrigerant or more fall under EU F-gas rules that apply in Northern Ireland, 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 Castlereagh?
Guide prices in Castlereagh run from about £2,695 to £22,500 per system, plus VAT. A typical job (supply and extract for a 150 m² office) costs £6,395–£15,195 plus VAT. We fix the price in writing after a free survey.
Do you also cover Belfast, Newtownabbey and Lisburn?
Yes. Alongside Castlereagh, we also cover Belfast, Newtownabbey and Lisburn. Each has its own page with local guide prices.
Which postcodes do you cover in Castlereagh?
All of them, including BT5 and BT6. 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.
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.
Need commercial ventilation in Castlereagh?
Free survey and fixed written quote. We reply with a guide price or to book the survey.