Commercial ventilation, County Down
Commercial ventilation design and installation in County Down
Supply and extract with heat recovery for offices, shops, clinics and fit-outs, across County Down.
- From £7,300 + VAT per system
- By arrangement

We can work as the ventilation subcontractor on County Down fit-outs.
Our team is based in Great Barr, Birmingham, and we work throughout County Down, from Castlereagh, Newtownards, Newry, Banbridge and Dundonald. Because of the travel involved, visits here are by arrangement and travel is quoted before booking.
Commercial ventilation in County Down at a glance
- Area
- County Down, Northern Ireland
- Towns listed
- 8, largest Bangor
- Postcode districts
- BT6, BT16, BT19, BT35, BT32 and BT63
- Price region
- Northern Ireland
- Survey
- By arrangement, travel quoted first
How we do it
Typical jobs are fit-outs and refurbishments: a new tenant needs ventilation to match a new layout, an old system cannot keep up with more staff, or a change of use needs a fresh design. We can work directly for occupiers and landlords, or as a subcontractor to fit-out and building contractors.
Heat recovery supply and extract
One or more units with ductwork to diffusers, sized for occupancy.
Toilet and kitchenette extract
Dedicated extract for welfare areas.
Demand control
CO2 or occupancy sensors that slow the system when rooms are empty.
Guide prices in County Down
| Work | Guide price |
|---|---|
| Small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) (per system) | £7,300–£15,600 + VAT |
| Office supply and extract ventilation with heat recovery, during a fit-out (per m² of floor) | £50–£115 + VAT |
Northern Ireland rates shown. Prices exclude VAT. The fixed price is confirmed in writing after we have seen the job. Travel is quoted separately for this area.
Common reasons people call
- Old units that are noisy, inefficient or failing
- Stuffy meeting rooms and afternoon drowsiness
- More staff than the system was designed for
Rules in Northern Ireland
Northern Ireland has its own building regulations, with ventilation guidance in Technical Booklet K. Northern Ireland has its own Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993 with the same duty to ventilate.
How the job runs
- Site survey
- Design
- Install
- Commission
- Hand over
Towns we cover in County Down
Questions about commercial ventilation design and installation in County Down
Are prices different in County Down?
Our guide prices are adjusted by region. In County Down we use Northern Ireland rates, so small office or shop: heat recovery unit, ductwork and controls (up to about 150 m²) is typically £7,300 to £15,600 + VAT per system.
How much does commercial ventilation cost?
A small office or shop with a single heat recovery unit typically costs £7,950 to £16,950 excluding VAT. Larger fit-outs are often priced at around £55 to £125 per square metre of floor, depending on design and ceiling access.
Can you work as a subcontractor on a fit-out?
Yes. We can install to a main contractor's programme and consultants' drawings, and supply commissioning records for handover.
Is the survey free in County Down?
Visits here are by arrangement. Because of the ferry or long travel involved, we quote travel separately and in writing before you commit, and we can often combine visits to keep the cost down.
Which rules apply to ventilation in County Down?
In Northern Ireland, ventilation is covered by Technical Booklet K of the Building Regulations (Northern Ireland). Workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993.
Other services in County Down
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.