Wall-mounted air conditioning in Isleworth
The urban heat island effect means London bedrooms can stay uncomfortably warm on summer nights. A single wall-mounted unit is often all a bedroom or sunny living room in Isleworth needs.
Where a home in Isleworth faces the street, the outdoor unit usually goes at the rear, out of sight. Isleworth sits around 10 miles from central London, inside our London area. Postcode districts we cover here include TW7.
Prices in Isleworth
In London, our guide range for wall-mounted air conditioning is £1,495–£3,895 per room, including VAT. 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 Popular work (quieter mid-range unit with Wi-Fi control and better seasonal efficiency for a living room) lands around £2,045–£2,845 in this area.
Essential
Reliable 2.5–3.5 kW unit for a bedroom or study, standard pipe run, basic remote.
Popular
Quieter mid-range unit with Wi-Fi control and better seasonal efficiency for a living room.
Premium
Design-led or very quiet model, larger capacity or concealed pipework through a 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 Isleworth, 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
We book surveys in Isleworth at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. A survey in Isleworth 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 wall-mounted air conditioning in Isleworth:
- Free site survey and room heat-gain check
- Core-drilled wall penetration and sealed sleeve
- Handover of the remote, Wi-Fi app (where fitted) and filter cleaning
- Insulated copper pipework, drain and interconnecting cable
- Supply of an R32 inverter unit sized to the room
Nearby
Nearby, we also cover Hounslow (under a mile), Heston (2 miles) and Richmond (2 miles). See all services in Isleworth or wall-mounted air conditioning across London.