Air conditioning for flats and apartments across County Londonderry
Balcony-mounted outdoor units are often the neatest solution for flats in Derry/Londonderry. Newer blocks in Derry/Londonderry with balconies are often the simplest flats to fit. Northern Ireland's mild, damp climate makes efficient heating and dehumidifying the main benefits for most homes.
Prices in County Londonderry
Our Northern Ireland guide price for air conditioning for flats and apartments is £1,245–£5,445 per flat, one room to the whole flat, VAT included. Labour rates in Northern Ireland keep this slightly under the national middle. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. For reference, the Two rooms option in County Londonderry (twin multi-split for living room and main bedroom) usually comes to about £2,445–£3,645.
Single room
One wall unit with a balcony outdoor unit.
Two rooms
Twin multi-split for living room and main bedroom.
Whole flat
Three or four rooms on one outdoor unit, concealed routes.
Guide prices show VAT at 20%. HMRC treats most fixed air conditioners and air-to-air heat pumps installed in homes as energy-saving materials, zero-rated until 31 March 2027 when we supply and fit them. If your installation qualifies, your quote shows 0% VAT and a lower price. Servicing, repairs, cleaning and controls are charged at 20%.
Consent and planning for flats
Leaseholders in County Londonderry usually need the freeholder's consent for anything fixed outside, and blocks of flats often need planning permission for outdoor units. In Northern Ireland, we confirm with the council whether an outdoor unit on a block of flats needs permission.
The survey
On a survey in County Londonderry the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows. Surveys in County Londonderry cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Included with air conditioning for flats and apartments across County Londonderry:
- Documents for the managing agent
- Single or multi-split system
- Free survey and lease and consent checklist
- Protection of common areas
- Pressure test, vacuum and commissioning
- Outdoor unit position agreed with the freeholder
Towns in County Londonderry
Pick your town for local details, or see every service in County Londonderry.

