Air conditioning for extensions and kitchen-diners in Haverfordwest
In Haverfordwest, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Humid summer spells in South Wales make dehumidifying and cooling equally welcome.
For a kitchen-diner in Haverfordwest, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Haverfordwest lies roughly 29 miles from Carmarthen, and we cover it as part of Dyfed. That includes the SA61 postcode district.
Prices in Haverfordwest
Air conditioning for extensions and kitchen-diners in Haverfordwest typically comes in at £1,345–£4,095 per space including VAT, based on South and Mid Wales rates. It is a touch below the UK middle, as trade rates in South and Mid Wales tend to be. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. On our South and Mid Wales figures, the Large single option (one 5–7 kW unit for a large glazed space) is 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
In Wales, outdoor units of up to 1.5 m³ that meet MCS 020a noise limits are usually permitted development on houses; listed buildings need consent, and in conservation areas a unit cannot go on a wall or roof facing a road.
The survey
Surveys in Haverfordwest 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
Every job in Haverfordwest includes:
- 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
- Hidden routes during the build, or neat surface routes after
Nearby
If you are just outside Haverfordwest, we also work in Milford Haven (7 miles), Pembroke Dock (8 miles) and Tenby (14 miles). See all services in Haverfordwest or air conditioning for extensions and kitchen-diners across Dyfed.

