Multi-split air conditioning across East Sussex
Twin and triple systems suit Brighton homes where bedrooms sit above the kitchen and one rear wall can take the outdoor unit. Multi-split is a good fit for Brighton flats and maisonettes where only a balcony or one rear wall is available. Hot spells reach the South East early, which makes spring the easiest time to arrange an installation.
Prices in East Sussex
In South East England, our guide range for multi-split air conditioning is £2,995–£9,445 for 2–4 rooms, including VAT. That is above the UK middle, mainly because labour and access cost more in South East England. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. 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 East Sussex, 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
On a survey in East Sussex 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. A survey in East Sussex 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.
What is included
Included with multi-split air conditioning across East Sussex:
- One outdoor unit sized to the combined load
- Free survey with a room-by-room heat-gain check
- Commissioning and a walk-round of every room's controls
- Pressure test, vacuum and refrigerant charge calculated for the pipe lengths
- An indoor unit and controls for every room
- Planned pipe routes through lofts, floors or trunking
Towns in East Sussex
Pick your town for local details, or see every service in East Sussex.