Air conditioning for extensions and kitchen-diners in Havant
An extension in Havant with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Hot spells reach the South East early, which makes spring the easiest time to arrange an installation.
For a kitchen-diner in Havant, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Havant lies roughly 19 miles from Southampton, and we cover it as part of Hampshire. Coverage includes PO9.
Prices in Havant
Our South East England guide price for air conditioning for extensions and kitchen-diners is £1,745–£5,445 per space, VAT included. 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. 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
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
On a survey in Havant 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. 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 as standard in Havant:
- Free survey with glazing and roof heat-gain check
- Pressure test, vacuum and commissioning
- One or two units sized for the whole space
- Hidden routes during the build, or neat surface routes after
- Handover of the remote or app
Nearby
If you are just outside Havant, we also work in Waterlooville (3 miles), Portsmouth (6 miles) and Gosport (8 miles). See all services in Havant or air conditioning for extensions and kitchen-diners across Hampshire.

