Air conditioning for extensions and kitchen-diners in Surbiton
In Surbiton, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Many London homes are flats or tall terraces, where heat rises to the top floor and the bedrooms bear the brunt of a hot spell.
An extension in Surbiton with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Surbiton sits around 11 miles from central London, inside our London area. Postcode districts we cover here include KT5 and KT6.
Prices in Surbiton
Our London guide price for air conditioning for extensions and kitchen-diners is £1,895–£5,845 per space, VAT included. London is one of the dearer parts of the UK for trades, which shows in the range. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. As an example, the Large single option (one 5–7 kW unit for a large glazed space) would typically be £2,695–£3,745 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
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. On a survey in Surbiton the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows.
What is included
Every job in Surbiton includes:
- Pressure test, vacuum and commissioning
- Handover of the remote or app
- 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
We also cover New Malden (2 miles), Esher (3 miles) and Ewell (4 miles). See all services in Surbiton or air conditioning for extensions and kitchen-diners across London.