Air conditioning for extensions and kitchen-diners across County Down
For a kitchen-diner in Bangor, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. An extension in Bangor with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. In Northern Ireland, cooling is mostly needed in conservatories and glazed rooms, while efficient heating benefits the whole home.
Prices in County Down
Air conditioning for extensions and kitchen-diners in County Down typically comes in at £1,345–£4,095 per space including VAT, based on Northern Ireland rates. That sits a little below the UK middle, reflecting typical Northern Ireland labour rates. The biggest variables are the pipe route, access for the outdoor unit and the state of the consumer unit, all of which the survey settles. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £1,895–£2,595 in this area.
Single unit
One 3.5–5 kW unit for a medium extension.
Large single
One 5–7 kW unit for a large glazed space.
Twin units
Two indoor units on a multi-split for long or L-shaped spaces.
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%.
Planning and permissions
In Northern Ireland we confirm planning requirements for the outdoor unit on survey, especially for listed buildings and conservation areas.
The survey
At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote. We book surveys in County Down at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Included with air conditioning for extensions and kitchen-diners across County Down:
- Placement clear of the hob and oven
- Pressure test, vacuum and commissioning
- Hidden routes during the build, or neat surface routes after
- Free survey with glazing and roof heat-gain check
- One or two units sized for the whole space
- Handover of the remote or app
Towns in County Down
Pick your town for local details, or see every service in County Down.

