Wall-mounted air conditioning in Heston
A single wall-mounted unit is often all a bedroom or sunny living room in Heston needs. In London, heat soaks into brick and concrete during the day and comes back out at night, which is when it is hardest to sleep.
In a semi or terrace in Heston, the indoor unit often goes on a back bedroom wall with the outdoor unit on a bracket below. We cover Heston as part of London, roughly 11 miles from central London. Postcode districts we cover here include TW5.
Prices in Heston
Budget around £1,495–£3,895 per room including VAT for wall-mounted air conditioning in and around Heston. 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. For reference, the Popular option in Heston (quieter mid-range unit with Wi-Fi control and better seasonal efficiency for a living room) usually comes to about £2,045–£2,845.
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
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
Surveys in Heston cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. A survey in Heston 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
What a job in Heston covers:
- Core-drilled wall penetration and sealed sleeve
- Free site survey and room heat-gain check
- Nitrogen pressure test and deep vacuum before commissioning
- Supply of an R32 inverter unit sized to the room
- Handover of the remote, Wi-Fi app (where fitted) and filter cleaning
Nearby
Close to Heston, our coverage also includes Hounslow (1 mile), Isleworth (2 miles) and Southall (2 miles). See all services in Heston or wall-mounted air conditioning across London.