Commercial air conditioning in Derry
Surveyed, specified and priced in writing: commercial air conditioning across Derry.
- Free survey for new installations
- Local guide prices for 22 services
- Unit sizes, refrigerant and price set out in writing
Commercial air conditioning in Derry
For businesses in Derry we cover the full job: survey, design, installation, servicing, repairs and the compliance paperwork that goes with them.
Guide prices in Derry start from about £1,350 for a single wall-mounted split, installed, and £160 for a service visit covering the first indoor unit, plus VAT.
Our coverage in Derry
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. Nearby, we also cover Strabane (about 22 km), Limavady (about 24 km) and Coleraine (about 44 km).
We plan installations in Derry so the noisy work — core drilling, ceiling access, lifting plant — happens when it disturbs your business least.
Each visit in Derry ends with a written report: what was checked, readings taken and anything that needs attention, priced separately for you to approve.
What businesses in Derry ask us for
TM44 air conditioning inspections
Energy inspections for systems over 12 kW, arranged and followed up.
From £365 per building, ex VAT
Air conditioning repairs
Fault-finding and repairs for units that are leaking, noisy or not cooling.
From £135 per repair visit, ex VAT
Server room and comms room cooling
Dedicated 24/7 cooling with back-up for IT, comms and plant rooms.
From £3,650 per room (duty/standby pair), ex VAT
Air handling units
Servicing, filter changes, repairs and replacement of AHUs.
From £225 per unit, per visit, ex VAT
Air-to-air heat pumps
Use your air conditioning as efficient electric heating as well as cooling.
From £1,500 per zone, ex VAT
F-gas leak checks and records
Mandatory leak checks, labelling and records for systems above the threshold.
From £135 per visit, first system, ex VAT
All services and local guide prices
Air conditioning installation
| Service | From (ex VAT) | Basis |
|---|---|---|
| Commercial air conditioning installation | £1,795 | per indoor unit (zone) |
| Office air conditioning | £1,995 | per zone |
| VRF and VRV systems | £2,250 | per indoor unit (whole system) |
| Ceiling cassette air conditioning | £1,995 | per cassette |
| Ducted air conditioning | £3,150 | per ducted zone |
| Split and multi-split systems | £1,350 | per system |
| Air-to-air heat pumps | £1,500 | per zone |
| Server room and comms room cooling | £3,650 | per room (duty/standby pair) |
Servicing, repairs and replacement
| Service | From (ex VAT) | Basis |
|---|---|---|
| Air conditioning servicing | £160 | per visit, first indoor unit |
| Planned maintenance contracts | £180 | per indoor unit, per year |
| Air conditioning repairs | £135 | per repair visit |
| Air conditioning cleaning | £85 | per indoor unit |
| Air conditioning replacement and upgrades | £1,500 | per indoor unit |
F-gas and TM44 compliance
| Service | From (ex VAT) | Basis |
|---|---|---|
| F-gas leak checks and records | £135 | per visit, first system |
| TM44 air conditioning inspections | £365 | per building |
| Decommissioning and refrigerant recovery | £225 | per system |
Ventilation and air quality
| Service | From (ex VAT) | Basis |
|---|---|---|
| Commercial ventilation | £2,695 | per system |
| Heat recovery ventilation (MVHR) | £4,550 | per unit installed |
| Fan coil units | £60 | per fan coil serviced |
| Air handling units | £225 | per unit, per visit |
Design and specialist systems
| Service | From (ex VAT) | Basis |
|---|---|---|
| HVAC design and heat load surveys | £455 | per project |
| Air curtains | £1,350 | per doorway |
What to think about in Derry
Working hours
Most Derry businesses prefer noisy work outside trading hours. Early starts, evenings and weekends can be arranged and are priced up front.
Leased premises
If your Derry 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.
Access and parking
Town-centre jobs in Derry often come down to access — loading restrictions, parking for the van and getting equipment onto a roof. We check this at survey and plan deliveries around it.
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.
Two rules matter for most businesses in Northern Ireland: EU F-gas rules that apply in Northern Ireland (leak checks from 5 tonnes CO2e) and the periodic energy inspection for more than 12 kW of air conditioning.
FAQs for Derry
How much does commercial air conditioning cost in Derry?
A single wall-mounted split typically costs £1,350–£2,250 plus VAT installed in Derry, and a ceiling cassette £1,995–£4,550 per unit. A small shop or office with two to four indoor units usually comes to £4,550–£15,195 plus VAT.
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 refrigerant do new systems use?
Most new small split systems now use R32, a lower-GWP refrigerant; larger systems vary by equipment. We state the refrigerant and charge on every quote.
Do you service systems you did not install?
Yes. We service most commercial makes and models; tell us the make and model if you know them.
Can you work outside our opening hours?
Yes. Early starts, evenings and weekends can be arranged, and any extra cost is shown in the quote.
Nearby towns
Air conditioning for your premises in Derry
Send a few details and we will arrange a survey or call you back with a guide price.