Air conditioning for extensions and kitchen-diners in Maidenhead
Hot spells reach the South East early, which makes spring the easiest time to arrange an installation. For a kitchen-diner in Maidenhead, we place the indoor unit clear of the hob and plan the outdoor unit at the rear.
In Maidenhead, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Our Berkshire coverage takes in Maidenhead, about 12 miles from Reading. We cover SL6 and the streets around them.
Prices in Maidenhead
Budget around £1,745–£5,445 per space including VAT for air conditioning for extensions and kitchen-diners in and around Maidenhead. 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. For reference, the Large single option in Maidenhead (one 5–7 kW unit for a large glazed space) usually comes to 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
Since 29 May 2025, England's permitted development rules allow larger outdoor units (up to 1.5 m³) and no longer require a 1 m gap to the boundary, provided the MCS 020(a) noise check is met. Listed buildings and pitched-roof installs still need permission.
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. Surveys in Maidenhead cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
What a job in Maidenhead covers:
- Handover of the remote or app
- Hidden routes during the build, or neat surface routes after
- One or two units sized for the whole space
- Pressure test, vacuum and commissioning
- Free survey with glazing and roof heat-gain check
Nearby
Neighbouring places we cover include Slough (5 miles), Windsor (6 miles) and High Wycombe (7 miles). See all services in Maidenhead or air conditioning for extensions and kitchen-diners across Berkshire.