Wall-mounted air conditioning in West Sussex

Wall-mounted air conditioning across West Sussex

In a semi or terrace in Crawley, the indoor unit often goes on a back bedroom wall with the outdoor unit on a bracket below. A single wall-mounted unit is often all a bedroom or sunny living room in Crawley needs. The South East sees some of the UK's warmest summer days, and south-facing rooms and conservatories feel it first.

Prices in West Sussex

Our South East England guide price for wall-mounted air conditioning is £1,395–£3,595 per room, VAT included. Prices here sit above the national middle, reflecting South East England labour rates and parking and access costs. The biggest variables are the pipe route, access for the outdoor unit and the state of the consumer unit, all of which the survey settles. For reference, the Popular option in West Sussex (quieter mid-range unit with Wi-Fi control and better seasonal efficiency for a living room) usually comes to about £1,895–£2,595.

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 West Sussex, 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

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. On a survey in West Sussex 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.

What is included

Included with wall-mounted air conditioning across West Sussex:

• Insulated copper pipework, drain and interconnecting cable
• Handover of the remote, Wi-Fi app (where fitted) and filter cleaning
• 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

Towns in West Sussex

Pick your town for local details, or see every service in West Sussex.

• Crawley
• Worthing
• Bognor Regis
• Littlehampton
• Horsham
• Haywards Heath
• Chichester
• Burgess Hill
• East Grinstead