Air conditioning for extensions and kitchen-diners in Dinas Powys
Humid summer spells in South Wales make dehumidifying and cooling equally welcome. In Dinas Powys, a side wall of a single-storey extension is usually the neatest place for the indoor unit.
For a kitchen-diner in Dinas Powys, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Our South Glamorgan coverage takes in Dinas Powys, about 3 miles from Cardiff. We cover CF64 and the streets around them.
Prices in Dinas Powys
Our South and Mid Wales guide price for air conditioning for extensions and kitchen-diners is £1,345–£4,095 per space, VAT included. 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. As an example, the Large single option (one 5–7 kW unit for a large glazed space) would typically be £1,895–£2,595 here.
Single unit
One 3.5–5 kW unit for a medium extension.
Large single
One 5–7 kW unit for a large glazed space.
Twin units
Two indoor units on a multi-split for long or L-shaped spaces.
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
Surveys in Dinas Powys cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. 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.
What is included
Included as standard in Dinas Powys:
- Hidden routes during the build, or neat surface routes after
- Free survey with glazing and roof heat-gain check
- Pressure test, vacuum and commissioning
- One or two units sized for the whole space
- Placement clear of the hob and oven
Nearby
If you are just outside Dinas Powys, we also work in Penarth (2 miles), Cardiff (3 miles) and Barry (4 miles). See all services in Dinas Powys or air conditioning for extensions and kitchen-diners across South Glamorgan.