Air conditioning for extensions and kitchen-diners in High Wycombe
For a kitchen-diner in High Wycombe, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. The South East sees some of the UK's warmest summer days, and south-facing rooms and conservatories feel it first.
In High Wycombe, a side wall of a single-storey extension is usually the neatest place for the indoor unit. High Wycombe sits around 29 miles from Milton Keynes, inside our Buckinghamshire area. Homes in HP13 are all within our coverage.
Prices in High Wycombe
In South East England, our guide range for air conditioning for extensions and kitchen-diners is £1,745–£5,445 per space, including VAT. Prices here sit above the national middle, reflecting South East England labour rates and parking and access costs. The biggest variables are the pipe route, access for the outdoor unit and the state of the consumer unit, all of which the survey settles. 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
On a survey in High Wycombe 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. A survey in High Wycombe 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.
What is included
Included with air conditioning for extensions and kitchen-diners in High Wycombe:
- Handover of the remote or app
- Hidden routes during the build, or neat surface routes after
- Pressure test, vacuum and commissioning
- Placement clear of the hob and oven
- One or two units sized for the whole space
Nearby
Neighbouring places we cover include Amersham (6 miles), Maidenhead (7 miles) and Henley-on-Thames (9 miles). See all services in High Wycombe or air conditioning for extensions and kitchen-diners across Buckinghamshire.

