Air conditioning for extensions and kitchen-diners in Ewell
Summers in the South East are among the warmest in the country, so cooling often comes first, with efficient winter heating as a bonus. For a kitchen-diner in Ewell, we place the indoor unit clear of the hob and plan the outdoor unit at the rear.
In Ewell, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Ewell is about 14 miles from Woking and falls within our Surrey coverage. Homes in KT17 are all within our coverage.
Prices in Ewell
In South East England, our guide range for air conditioning for extensions and kitchen-diners is £1,745–£5,445 per space, including VAT. That is above the UK middle, mainly because labour and access cost more in South East England. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. As an example, the Large single option (one 5–7 kW unit for a large glazed space) would typically be £2,495–£3,495 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
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
A survey in Ewell 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. Surveys in Ewell cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Included as standard in Ewell:
- Hidden routes during the build, or neat surface routes after
- Handover of the remote or app
- Placement clear of the hob and oven
- Free survey with glazing and roof heat-gain check
- Pressure test, vacuum and commissioning
Nearby
Neighbouring places we cover include Epsom (2 miles), Sutton (2 miles) and Banstead (3 miles). See all services in Ewell or air conditioning for extensions and kitchen-diners across Surrey.

