Multi-split air conditioning across Devon
Multi-split is a good fit for Plymouth flats and maisonettes where only a balcony or one rear wall is available. Twin and triple systems suit Plymouth homes where bedrooms sit above the kitchen and one rear wall can take the outdoor unit. In the South West, a system that heats well through damp winters is often as valuable as summer cooling.
Prices in Devon
Budget around £2,450–£7,750 for 2–4 rooms including VAT for multi-split air conditioning in and around Devon. It sits near the middle of UK prices. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. Typical Triple work (three rooms with mixed indoor styles and Wi-Fi control throughout) lands around £3,350–£5,450 in this area.
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
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
On a survey in Devon 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 Devon 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 Devon:
- Free survey with a room-by-room heat-gain check
- An indoor unit and controls for every room
- Planned pipe routes through lofts, floors or trunking
- Pressure test, vacuum and refrigerant charge calculated for the pipe lengths
- Commissioning and a walk-round of every room's controls
- One outdoor unit sized to the combined load
Towns in Devon
Pick your town for local details, or see every service in Devon.