Air conditioning for extensions and kitchen-diners in Walton-on-Thames
An extension in Walton-on-Thames with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. In the South East, loft rooms and glazed extensions can climb well above the outside temperature on a sunny afternoon.
For a kitchen-diner in Walton-on-Thames, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Walton-on-Thames lies roughly 8 miles from Woking, and we cover it as part of Surrey. That includes the KT12 postcode district.
Prices in Walton-on-Thames
For Walton-on-Thames, expect roughly £1,745 to £5,445 per space, VAT included, adjusted for typical South East England rates. South East England is one of the dearer parts of the UK for trades, which shows in the range. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. On our South East England figures, the Large single option (one 5–7 kW unit for a large glazed space) is about £2,495–£3,495.
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 England, most houses can have an outdoor unit under permitted development if it is no larger than 1.5 m³, meets the MCS 020(a) noise limit of 37 dB(A) at the nearest neighbour's window, and there are no more than two on a detached house or one on other houses. Listed buildings need consent.
The survey
We book surveys in Walton-on-Thames at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. On a survey in Walton-on-Thames 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
Here is what is included on every job in Walton-on-Thames:
- Placement clear of the hob and oven
- Hidden routes during the build, or neat surface routes after
- Handover of the remote or app
- One or two units sized for the whole space
- Free survey with glazing and roof heat-gain check
Nearby
Close to Walton-on-Thames, our coverage also includes Sunbury-on-Thames (1 mile), Esher (2 miles) and Hanworth (3 miles). See all services in Walton-on-Thames or air conditioning for extensions and kitchen-diners across Surrey.