Multi-split air conditioning in Southampton
The South East sees some of the UK's warmest summer days, and south-facing rooms and conservatories feel it first. Twin and triple systems suit Southampton homes where bedrooms sit above the kitchen and one rear wall can take the outdoor unit.
Multi-split is a good fit for Southampton flats and maisonettes where only a balcony or one rear wall is available. We cover Southampton and the rest of Hampshire, including Portsmouth and Basingstoke. We cover SO15 and the streets around them.
Prices in Southampton
Multi-split air conditioning in Southampton typically comes in at £2,995–£9,445 for 2–4 rooms including VAT, based on South East England rates. Prices here sit above the national middle, reflecting South East England labour rates and parking and access costs. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. 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
For most houses in Southampton, the outdoor unit is permitted development if it passes the MCS 020(a) noise check (37 dB(A) or less at the nearest neighbouring window) and stays within the size and number limits. We run that check on survey.
The survey
A survey in Southampton 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. Surveys in Southampton cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Included as standard in Southampton:
- Commissioning and a walk-round of every room's controls
- One outdoor unit sized to the combined load
- Pressure test, vacuum and refrigerant charge calculated for the pipe lengths
- An indoor unit and controls for every room
- Free survey with a room-by-room heat-gain check
Nearby
We also cover Totton (4 miles), Eastleigh (5 miles) and Fareham (10 miles). See all services in Southampton or multi-split air conditioning across Hampshire.