Multi-split air conditioning in Cardiff
In a house in Cardiff with a usable loft, multi-split pipes can often run through it so the front stays clear. In South and Mid Wales, efficient heating is often as important as cooling.
Multi-split is a good fit for Cardiff flats and maisonettes where only a balcony or one rear wall is available. Cardiff is one of the main towns we cover in South Glamorgan, alongside Barry and Penarth. Coverage includes CF10, CF11, CF14, CF15, CF23 and CF24.
Prices in Cardiff
For Cardiff, expect roughly £2,245 to £7,145 for 2–4 rooms, VAT included, adjusted for typical South and Mid Wales rates. Labour rates in South and Mid Wales keep this slightly under the national middle. 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. For reference, the Triple option in Cardiff (three rooms with mixed indoor styles and Wi-Fi control throughout) usually comes to about £3,095–£4,995.
Twin
Two rooms on one outdoor unit, wall-mounted indoor units, standard routes.
Triple
Three rooms with mixed indoor styles and Wi-Fi control throughout.
Quad
Four or five rooms, longer concealed runs or a ducted unit in a loft void.
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
Wales removed its old 3 m boundary rule on 1 June 2026, so most houses in Cardiff can now have an outdoor unit under permitted development if it meets the MCS 020a noise condition. Listed buildings still need consent, and conservation areas have extra restrictions.
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 Cardiff at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
What a job in Cardiff covers:
- An indoor unit and controls for every room
- Commissioning and a walk-round of every room's controls
- Free survey with a room-by-room heat-gain check
- Planned pipe routes through lofts, floors or trunking
- Pressure test, vacuum and refrigerant charge calculated for the pipe lengths
Nearby
If you are just outside Cardiff, we also work in Penarth (3 miles), Dinas Powys (3 miles) and Caerphilly (7 miles). See all services in Cardiff or multi-split air conditioning across South Glamorgan.