Ducted air conditioning in Llantwit Major
For a renovation in Llantwit Major, the best time to plan ducted cooling is before the plasterers arrive. In South and Mid Wales, efficient heating is often as important as cooling.
In an older house in Llantwit Major, the loft and any existing bulkheads decide whether a ducted layout will work. We cover Llantwit Major as part of South Glamorgan, roughly 14 miles from Cardiff. We cover CF61 and the streets around them.
Prices in Llantwit Major
Guide prices around Llantwit Major run from £4,995 to £13,745 per system including VAT. 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 Zoned work (motorised dampers or two units for separate floors or room groups) lands around £6,845–£10,045 in this area.
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
Wales removed its old 3 m boundary rule on 1 June 2026, so most houses in Llantwit Major 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. A survey in Llantwit Major 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
Here is what is included on every job in Llantwit Major:
- Concealed fan unit and outdoor unit sized to the zone
- Free survey with ceiling-void and loft inspection
- Wall controller or app control
- Access hatch and condensate route planned in
- Commissioning with airflow balancing per grille
Nearby
If you are just outside Llantwit Major, we also work in Cowbridge (4 miles), Bridgend (8 miles) and Barry (9 miles). See all services in Llantwit Major or ducted air conditioning across South Glamorgan.