Home air conditioning in Isleworth
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. Isleworth sits around 10 miles from central London, inside our London area. Postcode districts we cover here include TW7.
Rooms and systems
Top-floor flats in Isleworth feel the heat most, because the roof sits right above the bedroom. If a system in Isleworth has needed gas before, the original leak was probably never fixed. Multi-split is a good fit for Isleworth flats and maisonettes where only a balcony or one rear wall is available. Where a home in Isleworth faces the street, the outdoor unit usually goes at the rear, out of sight.
Many homes start with one or two rooms. A system can be designed so that more rooms are added later without replacing the outdoor unit. Design-led units, slim floor consoles and concealed ducted systems are all options where a standard white wall unit would look out of place.
Guide prices in Isleworth
Guide prices here, including VAT, start with a ducted system at £7,195–£19,745 per system; a service is £125–£245 per system visit and a wall-mounted system £1,495–£3,895 per room. Installations are fixed in writing after a free survey; visits are priced before we come.
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. Flats need more care: get your freeholder's written consent first, and expect the planning rules for a block of flats in Isleworth to be stricter than for a house.
Isleworth is in the Boiler Upgrade Scheme area, so eligible homes replacing oil, gas, LPG or electric heating may be able to get £2,500 off an air-to-air heat pump, as long as no fossil-fuel boiler stays in use. An MCS-certified installer must claim it; we confirm eligibility, and which installer applies, before you commit.
Nearby
We also cover Hounslow (under a mile), Heston (2 miles) and Richmond (2 miles). See all of London.