Commercial air conditioning installation in Derry
Commercial air conditioning installation for businesses in Derry — surveyed, designed and priced in writing before any work starts.
- Free site survey and fixed written quote
- Unit sizes, refrigerant and price set out in writing
- Work planned around your opening hours
How much does commercial air conditioning installation cost in Derry?
Our guide range in Derry is £1,795–£4,350 per indoor unit (zone) before VAT; a typical job (small shop or office, 2–4 indoor units) is £4,550–£15,195 plus VAT. You get a fixed written quote after the free survey.
Commercial air conditioning installation is the design, supply, fitting and commissioning of a cooling (and usually heating) system for a business premises.
Covering Derry and nearby
Derry is a large town in County Londonderry, with a busy centre, retail parks and industrial estates on its edges.
We cover every Derry postcode, including BT47. We also work in nearby Strabane, Limavady and Coleraine. In Derry, outdoor unit positions are often the deciding factor: a rear flat roof or yard is usually straightforward, while a front elevation may need landlord or planning consent first.
Included as standard
- Site survey and heat load calculation
- System and unit selection with a clear written specification
- Electrical supply and isolators by a qualified electrician
- Pressure testing, evacuation and charging
- F-gas records, labelling and commissioning certificates
Guide prices in Derry
Guide prices for Derry, set for Northern Ireland. Your fixed price comes in writing.
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Single wall-mounted split (2.5–7 kW) | £1,350–£2,695 | £1,620–£3,234 | per system |
| Ceiling cassette | £1,995–£4,550 | £2,394–£5,460 | per unit |
| Multi-split, 2–4 indoor units | £3,150–£9,150 | £3,780–£10,980 | per system |
| Ducted indoor unit with grilles | £3,150–£7,295 | £3,780–£8,754 | per unit |
| Electrical supply and isolator | £225–£730 | £270–£876 | per system |
Ex VAT, supply and install, standard access and up to about 5 m of pipework per unit.
How a job in Derry works
Survey
We measure the space, check the ceiling void, wall construction, glazing and occupancy, and agree where indoor and outdoor units can go.
Design and quote
You get a written specification with unit sizes, positions, pipe routes and a fixed price — plus any planning, landlord or noise points to resolve first.
First fix
Pipework, cabling and condensate runs go in, usually above ceilings or in neat trunking, before the units are hung. We keep work areas in Derry screened and tidy at the end of each day.
Install and test
Indoor and outdoor units are fitted, the system is pressure tested with nitrogen, evacuated and charged with refrigerant.
Commission and hand over
We set up controls, check air flows and temperatures, show your team how to use it and hand over the F-gas and commissioning paperwork.
Before you book in Derry
Power
Larger systems need a dedicated supply from the distribution board. We check capacity at survey so there are no surprises on install day.
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.
Planning and noise
Outdoor units on commercial buildings often need planning permission — particularly on a front elevation, in a conservation area or on a listed building — and councils may ask for a noise assessment.
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 Derry
- Retail and shops: comfortable shop floors, stockrooms and entrances, even with the door open.
Compliance in Northern Ireland: refrigerant work falls under EU F-gas rules that apply in Northern Ireland, and buildings with more than 12 kW of air conditioning in total need a periodic energy inspection (often called TM44).
Common questions from businesses in Derry
How much does commercial air conditioning installation cost in Derry?
Guide prices in Derry run from about £1,795 to £4,350 per indoor unit (zone), plus VAT. A typical job (small shop or office, 2–4 indoor units) costs £4,550–£15,195 plus VAT. We fix the price in writing after a free survey.
Do you also cover Strabane, Limavady and Coleraine?
Yes. Alongside Derry, we also cover Strabane, Limavady and Coleraine. Each has its own page with local guide prices.
Which postcodes do you cover in Derry?
All of them, including BT47. Give us your postcode when you enquire and we will confirm the visit details.
Is the survey free?
Yes. The site survey and written quote for a new installation are free and there is no obligation to go ahead.
What warranty do I get?
Manufacturer warranties vary by brand and model and usually depend on the system being serviced at the intervals the manufacturer sets. We give you the warranty terms for the equipment we quote.
Get a guide price for Derry
Free survey and fixed written quote. We reply with a guide price or to book the survey.