Ducted air conditioning across South Glamorgan
In an older house in Cardiff, the loft and any existing bulkheads decide whether a ducted layout will work. For a renovation in Cardiff, the best time to plan ducted cooling is before the plasterers arrive. Wet South Wales winters make a heat pump's quiet, even heating and dehumidifying mode useful well beyond summer.
Prices in South Glamorgan
Budget around £4,995–£13,745 per system including VAT for ducted air conditioning in and around South Glamorgan. It is a touch below the UK middle, as trade rates in South and Mid Wales tend to be. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. For reference, the Zoned option in South Glamorgan (motorised dampers or two units for separate floors or room groups) usually comes to about £6,845–£10,045.
Single zone
One ducted unit serving two or three rooms from a loft or void.
Zoned
Motorised dampers or two units for separate floors or room groups.
Whole home
Multiple ducted units with linear slot diffusers and smart control.
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
On a survey in South Glamorgan the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows. Surveys in South Glamorgan cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Included with ducted air conditioning across South Glamorgan:
- Access hatch and condensate route planned in
- Wall controller or app control
- Insulated ductwork, plenums and grilles
- Concealed fan unit and outdoor unit sized to the zone
- Commissioning with airflow balancing per grille
- Free survey with ceiling-void and loft inspection
Towns in South Glamorgan
Pick your town for local details, or see every service in South Glamorgan.