Wall-mounted air conditioning across Kent
In a semi or terrace in Maidstone, the indoor unit often goes on a back bedroom wall with the outdoor unit on a bracket below. Where a home in Maidstone faces the street, the outdoor unit usually goes at the rear, out of sight. Hot spells reach the South East early, which makes spring the easiest time to arrange an installation.
Prices in Kent
Budget around £1,395–£3,595 per room including VAT for wall-mounted air conditioning in and around Kent. South East England is one of the dearer parts of the UK for trades, which shows in the range. What moves a quote in Kent up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. 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
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
On a survey in Kent the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows. A survey in Kent 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 Kent:
- Insulated copper pipework, drain and interconnecting cable
- Free site survey and room heat-gain check
- Handover of the remote, Wi-Fi app (where fitted) and filter cleaning
- Supply of an R32 inverter unit sized to the room
- Nitrogen pressure test and deep vacuum before commissioning
- Core-drilled wall penetration and sealed sleeve
Towns in Kent
Pick your town for local details, or see every service in Kent.