Wall-mounted air conditioning in Cardiff
Wet South Wales winters make a heat pump's quiet, even heating and dehumidifying mode useful well beyond summer. Where a home in Cardiff faces the street, the outdoor unit usually goes at the rear, out of sight.
A single wall-mounted unit is often all a bedroom or sunny living room in Cardiff needs. As well as Cardiff itself, our South Glamorgan coverage takes in Barry, Penarth and the towns around them. That includes the CF10, CF11, CF14, CF15, CF23 and CF24 postcode districts.
Prices in Cardiff
Wall-mounted air conditioning in Cardiff typically comes in at £1,045–£2,695 per room including VAT, based on South and Mid Wales rates. Labour rates in South and Mid Wales keep this slightly under the national middle. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. Typical Popular work (quieter mid-range unit with Wi-Fi control and better seasonal efficiency for a living room) lands around £1,445–£1,995 in this area.
Essential
Reliable 2.5–3.5 kW unit for a bedroom or study, standard pipe run, basic remote.
Popular
Quieter mid-range unit with Wi-Fi control and better seasonal efficiency for a living room.
Premium
Design-led or very quiet model, larger capacity or concealed pipework through a 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
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. A survey in Cardiff 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
What a job in Cardiff covers:
- Insulated copper pipework, drain and interconnecting cable
- Free site survey and room heat-gain check
- Supply of an R32 inverter unit sized to the room
- Handover of the remote, Wi-Fi app (where fitted) and filter cleaning
- Core-drilled wall penetration and sealed sleeve
Nearby
Neighbouring places we cover include Penarth (3 miles), Dinas Powys (3 miles) and Caerphilly (7 miles). See all services in Cardiff or wall-mounted air conditioning across South Glamorgan.