Air conditioning for extensions and kitchen-diners in Merthyr Tydfil
South Wales summers can be warm and humid, and winters damp, so a reversible system earns its keep all year. An extension in Merthyr Tydfil with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon.
In Merthyr Tydfil, a side wall of a single-storey extension is usually the neatest place for the indoor unit. We cover Merthyr Tydfil as part of Mid Glamorgan, roughly 19 miles from Bridgend. Postcode districts we cover here include CF47.
Prices in Merthyr Tydfil
In South and Mid Wales, our guide range for air conditioning for extensions and kitchen-diners is £1,345–£4,095 per space, including VAT. Labour rates in South and Mid Wales keep this slightly under the national middle. 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 Large single option in Merthyr Tydfil (one 5–7 kW unit for a large glazed space) usually comes to about £1,895–£2,595.
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
Wales removed its old 3 m boundary rule on 1 June 2026, so most houses in Merthyr Tydfil 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. We book surveys in Merthyr Tydfil at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Included with air conditioning for extensions and kitchen-diners in Merthyr Tydfil:
- Handover of the remote or app
- Pressure test, vacuum and commissioning
- One or two units sized for the whole space
- Free survey with glazing and roof heat-gain check
- Placement clear of the hob and oven
Nearby
Nearby, we also cover Aberdare (4 miles), Tredegar (6 miles) and Rhondda (7 miles). See all services in Merthyr Tydfil or air conditioning for extensions and kitchen-diners across Mid Glamorgan.