Multi-split air conditioning in Harrow
In a house in Harrow with a usable loft, multi-split pipes can often run through it so the front stays clear. London's dense streets hold heat overnight, so top-floor flats and loft rooms often stay warm long after sunset.
Twin and triple systems suit Harrow homes where bedrooms sit above the kitchen and one rear wall can take the outdoor unit. Harrow lies roughly 10 miles from central London, and we cover it as part of London. Homes in HA2 are all within our coverage.
Prices in Harrow
In London, our guide range for multi-split air conditioning is £3,245–£10,245 for 2–4 rooms, including VAT. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. 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 £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
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. A survey in Harrow 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
Every job in Harrow includes:
- 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
Nearby
Close to Harrow, our coverage also includes Wembley (2 miles), Northolt (3 miles) and Greenford (4 miles). See all services in Harrow or multi-split air conditioning across London.