Air conditioning for extensions and kitchen-diners in Southampton
In Southampton, a side wall of a single-storey extension is usually the neatest place for the indoor unit. 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 Southampton, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. As well as Southampton itself, our Hampshire coverage takes in Portsmouth, Basingstoke and the towns around them. Homes in SO15 are all within our coverage.
Prices in Southampton
Budget around £1,745–£5,445 per space including VAT for air conditioning for extensions and kitchen-diners in and around Southampton. 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. For reference, the Large single option in Southampton (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
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
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. We book surveys in Southampton at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Here is what is included on every job in Southampton:
- Hidden routes during the build, or neat surface routes after
- Handover of the remote or app
- Pressure test, vacuum and commissioning
- One or two units sized for the whole space
- Placement clear of the hob and oven
Nearby
Close to Southampton, our coverage also includes Totton (4 miles), Eastleigh (5 miles) and Fareham (10 miles). See all services in Southampton or air conditioning for extensions and kitchen-diners across Hampshire.