Air conditioning for extensions and kitchen-diners in Eastleigh
Summers in the South East are among the warmest in the country, so cooling often comes first, with efficient winter heating as a bonus. In Eastleigh, a side wall of a single-storey extension is usually the neatest place for the indoor unit.
An extension in Eastleigh with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Eastleigh lies roughly 5 miles from Southampton, and we cover it as part of Hampshire. Coverage includes SO50.
Prices in Eastleigh
Budget around £1,745–£5,445 per space including VAT for air conditioning for extensions and kitchen-diners in and around Eastleigh. South East England is one of the dearer parts of the UK for trades, which shows in the range. What moves a quote in Eastleigh up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £2,495–£3,495 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
England's rules let most houses fit an outdoor unit without a planning application, as long as the size, number and MCS 020(a) noise conditions are met. Flats, listed buildings and roof-mounted units are treated differently.
The survey
Surveys in Eastleigh cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. 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.
What is included
Included as standard in Eastleigh:
- Hidden routes during the build, or neat surface routes after
- Free survey with glazing and roof heat-gain check
- Placement clear of the hob and oven
- Pressure test, vacuum and commissioning
- One or two units sized for the whole space
Nearby
Close to Eastleigh, our coverage also includes Southampton (5 miles), Winchester (7 miles) and Totton (7 miles). See all services in Eastleigh or air conditioning for extensions and kitchen-diners across Hampshire.