Air conditioning for extensions and kitchen-diners across Berkshire
In Reading, a side wall of a single-storey extension is usually the neatest place for the indoor unit. For a kitchen-diner in Reading, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. In the South East, loft rooms and glazed extensions can climb well above the outside temperature on a sunny afternoon.
Prices in Berkshire
Budget around £1,745–£5,445 per space including VAT for air conditioning for extensions and kitchen-diners in and around Berkshire. That is above the UK middle, mainly because labour and access cost more in South East England. What moves a quote in Berkshire up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. 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
Surveys in Berkshire 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 with air conditioning for extensions and kitchen-diners across Berkshire:
- One or two units sized for the whole space
- Placement clear of the hob and oven
- Handover of the remote or app
- Free survey with glazing and roof heat-gain check
- Hidden routes during the build, or neat surface routes after
- Pressure test, vacuum and commissioning
Towns in Berkshire
Pick your town for local details, or see every service in Berkshire.

