Wall-mounted air conditioning across East Sussex
Where a home in Brighton faces the street, the outdoor unit usually goes at the rear, out of sight. In a semi or terrace in Brighton, the indoor unit often goes on a back bedroom wall with the outdoor unit on a bracket below. Summers in the South East are among the warmest in the country, so cooling often comes first, with efficient winter heating as a bonus.
Prices in East Sussex
For East Sussex, expect roughly £1,395 to £3,595 per room, VAT included, adjusted for typical South East England rates. That is above the UK middle, mainly because labour and access cost more in South East England. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. On our South East England figures, the Popular option (quieter mid-range unit with Wi-Fi control and better seasonal efficiency for a living room) is about £1,895–£2,595.
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
England's rules let most houses fit an outdoor unit without a planning application, as long as the size, number and MCS 020(a) noise conditions are met. Flats, listed buildings and roof-mounted units are treated differently.
The survey
Surveys in East Sussex cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. A survey in East Sussex 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 across East Sussex:
- Free site survey and room heat-gain check
- Nitrogen pressure test and deep vacuum before commissioning
- 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
Towns in East Sussex
Pick your town for local details, or see every service in East Sussex.