Air conditioning for extensions and kitchen-diners in Gosport
An extension in Gosport with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. The South East sees some of the UK's warmest summer days, and south-facing rooms and conservatories feel it first.
In Gosport, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Our Hampshire coverage takes in Gosport, about 14 miles from Southampton. That includes the PO12 postcode district.
Prices in Gosport
Budget around £1,745–£5,445 per space including VAT for air conditioning for extensions and kitchen-diners in and around Gosport. South East England is one of the dearer parts of the UK for trades, which shows in the range. 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. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £2,495–£3,495 in this area.
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
A survey in Gosport 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. On a survey in Gosport 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.
What is included
Every job in Gosport includes:
- One or two units sized for the whole space
- Pressure test, vacuum and commissioning
- Handover of the remote or app
- Hidden routes during the build, or neat surface routes after
- Placement clear of the hob and oven
Nearby
If you are just outside Gosport, we also work in Portsmouth (2 miles), Fareham (4 miles) and Waterlooville (7 miles). See all services in Gosport or air conditioning for extensions and kitchen-diners across Hampshire.

