Multi-split air conditioning in Carshalton
Many London homes are flats or tall terraces, where heat rises to the top floor and the bedrooms bear the brunt of a hot spell. Multi-split is a good fit for Carshalton flats and maisonettes where only a balcony or one rear wall is available.
In a house in Carshalton with a usable loft, multi-split pipes can often run through it so the front stays clear. Carshalton sits around 9 miles from central London, inside our London area. Homes in SM5 are all within our coverage.
Prices in Carshalton
Our London guide price for multi-split air conditioning is £3,245–£10,245 for 2–4 rooms, VAT included. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. Typical Triple work (three rooms with mixed indoor styles and Wi-Fi control throughout) lands around £4,395–£7,195 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
We book surveys in Carshalton at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. A survey in Carshalton 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 in Carshalton:
- Planned pipe routes through lofts, floors or trunking
- Free survey with a room-by-room heat-gain check
- 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
Nearby
Close to Carshalton, our coverage also includes Sutton (2 miles), Mitcham (2 miles) and Morden (2 miles). See all services in Carshalton or multi-split air conditioning across London.