Wall-mounted air conditioning in Coulsdon
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. Where a home in Coulsdon faces the street, the outdoor unit usually goes at the rear, out of sight.
In a semi or terrace in Coulsdon, the indoor unit often goes on a back bedroom wall with the outdoor unit on a bracket below. We cover Coulsdon as part of London, roughly 12 miles from central London. Postcode districts we cover here include CR5.
Prices in Coulsdon
In London, our guide range for wall-mounted air conditioning is £1,495–£3,895 per room, including VAT. That is above the UK middle, mainly because labour and access cost more in London. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. On our London figures, the Popular option (quieter mid-range unit with Wi-Fi control and better seasonal efficiency for a living room) is 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
A survey in Coulsdon 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. The free survey is where the real price is set: room measurements, pipe and drain routes, electrical checks and the outdoor unit position, all written into your quote.
What is included
Included as standard in Coulsdon:
- Handover of the remote, Wi-Fi app (where fitted) and filter cleaning
- Free site survey and room heat-gain check
- Core-drilled wall penetration and sealed sleeve
- Nitrogen pressure test and deep vacuum before commissioning
- Supply of an R32 inverter unit sized to the room
Nearby
Nearby, we also cover Purley (2 miles), Banstead (3 miles) and Sutton (3 miles). See all services in Coulsdon or wall-mounted air conditioning across London.