Multi-split air conditioning across South Glamorgan
Twin and triple systems suit Cardiff homes where bedrooms sit above the kitchen and one rear wall can take the outdoor unit. In a house in Cardiff with a usable loft, multi-split pipes can often run through it so the front stays clear. Humid summer spells in South Wales make dehumidifying and cooling equally welcome.
Prices in South Glamorgan
For South Glamorgan, expect roughly £2,245 to £7,145 for 2–4 rooms, VAT included, adjusted for typical South and Mid Wales rates. That sits a little below the UK middle, reflecting typical South and Mid Wales labour rates. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. On our South and Mid Wales figures, the Triple option (three rooms with mixed indoor styles and Wi-Fi control throughout) is 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
Since 1 June 2026, Welsh permitted development rules for outdoor units closely match England's: up to 1.5 m³, two units on a detached home, one on other homes, and MCS 020a noise compliance. Listed buildings need consent, and conservation areas have extra restrictions on units facing a road.
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. A survey in South Glamorgan usually takes one to two hours. We measure the rooms, check the walls and the consumer unit, agree the outdoor unit position with you and photograph the pipe routes.
What is included
Included with multi-split air conditioning across South Glamorgan:
- Planned pipe routes through lofts, floors or trunking
- An indoor unit and controls for every room
- Commissioning and a walk-round of every room's controls
- One outdoor unit sized to the combined load
- Free survey with a room-by-room heat-gain check
- Pressure test, vacuum and refrigerant charge calculated for the pipe lengths
Towns in South Glamorgan
Pick your town for local details, or see every service in South Glamorgan.