Air conditioning for extensions and kitchen-diners in Amesbury
An extension in Amesbury with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. In the South West, a system that heats well through damp winters is often as valuable as summer cooling.
In Amesbury, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Amesbury sits around 26 miles from Swindon, inside our Wiltshire area. We cover SP4 and the streets around them.
Prices in Amesbury
For Amesbury, expect roughly £1,450 to £4,450 per space, VAT included, adjusted for typical South West England rates. That is close to the UK middle for this kind of work. The biggest variables are the pipe route, access for the outdoor unit and the state of the consumer unit, all of which the survey settles. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £2,050–£2,850 in this area.
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
For most houses in Amesbury, the outdoor unit is permitted development if it passes the MCS 020(a) noise check (37 dB(A) or less at the nearest neighbouring window) and stays within the size and number limits. We run that check on survey.
The survey
Surveys in Amesbury cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. A survey in Amesbury 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
Included as standard in Amesbury:
- 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
- Pressure test, vacuum and commissioning
- Handover of the remote or app
Nearby
We also cover Salisbury (7 miles), Andover (13 miles) and Devizes (15 miles). See all services in Amesbury or air conditioning for extensions and kitchen-diners across Wiltshire.