Multi-split air conditioning across Hampshire
Multi-split is a good fit for Southampton flats and maisonettes where only a balcony or one rear wall is available. Twin and triple systems suit Southampton homes where bedrooms sit above the kitchen and one rear wall can take the outdoor unit. In the South East, loft rooms and glazed extensions can climb well above the outside temperature on a sunny afternoon.
Prices in Hampshire
For Hampshire, expect roughly £2,995 to £9,445 for 2–4 rooms, VAT included, adjusted for typical South East England rates. That is above the UK middle, mainly because labour and access cost more in South East England. What moves a quote in Hampshire up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. As an example, the Triple option (three rooms with mixed indoor styles and Wi-Fi control throughout) would typically be £4,095–£6,645 here.
Twin
Two rooms on one outdoor unit, wall-mounted indoor units, standard routes.
Triple
Three rooms with mixed indoor styles and Wi-Fi control throughout.
Quad
Four or five rooms, longer concealed runs or a ducted unit in a loft void.
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. We book surveys in Hampshire at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Included with multi-split air conditioning across Hampshire:
- Planned pipe routes through lofts, floors or trunking
- Commissioning and a walk-round of every room's controls
- One outdoor unit sized to the combined load
- Free survey with a room-by-room heat-gain check
- An indoor unit and controls for every room
- Pressure test, vacuum and refrigerant charge calculated for the pipe lengths
Towns in Hampshire
Pick your town for local details, or see every service in Hampshire.