Air conditioning for extensions and kitchen-diners in Lisburn
An extension in Lisburn with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Damp Northern Ireland winters make a heat pump's dehumidifying mode useful well beyond the summer.
In Lisburn, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Lisburn sits around 7 miles from Belfast, inside our County Antrim area. Postcode districts we cover here include BT27 and BT28.
Prices in Lisburn
Budget around £1,345–£4,095 per space including VAT for air conditioning for extensions and kitchen-diners in and around Lisburn. It is a touch below the UK middle, as trade rates in Northern Ireland tend to be. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. On our Northern Ireland figures, the Large single option (one 5–7 kW unit for a large glazed space) is about £1,895–£2,595.
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
The free survey is where the real price is set: room measurements, pipe and drain routes, electrical checks and the outdoor unit position, all written into your quote. 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.
What is included
What a job in Lisburn covers:
- One or two units sized for the whole space
- Pressure test, vacuum and commissioning
- Placement clear of the hob and oven
- Handover of the remote or app
- Hidden routes during the build, or neat surface routes after
Nearby
We also cover Belfast (7 miles), Castlereagh (7 miles) and Newtownabbey (11 miles). See all services in Lisburn or air conditioning for extensions and kitchen-diners across County Antrim.