Brighton air conditioning installations have some specific characteristics that affect cost — the high proportion of listed buildings, Victorian and Regency terraces with solid walls, seafront properties requiring marine-grade equipment, and the planning sensitivity of the city’s extensive conservation areas. Here is an honest guide to what installations cost in Brighton in 2026.
Typical Costs for Brighton Installations
| System Type | Typical Installed Cost |
|---|---|
| Single room split system (standard) | £1,300 – £2,200 |
| Single room (solid wall property) | £1,500 – £2,400 |
| Marine-grade unit (seafront/near seafront) | add £200 – £400 |
| 2-3 room multi-split | £3,200 – £5,500 |
| Commercial (office/restaurant) | £2,000 – £25,000+ |
| Annual service | £95 – £150 |
Solid Walls — The Brighton Factor
The majority of Brighton and Hove’s residential housing stock was built before 1920 using solid brick or flint construction — there is no cavity. Core drilling through a solid wall takes longer and costs more than a cavity wall installation, typically adding £100-200 to the installation cost. It also produces more dust and requires more careful containment. We always discuss this at the site survey for any pre-1930 property.
Seafront and Near-Seafront Properties
Properties within approximately 200-300 metres of the sea are exposed to salt-laden air that corrodes standard aluminium heat exchanger fins on outdoor units within 2-5 years. We strongly recommend marine-grade outdoor units (with epoxy-coated or pre-coated heat exchanger fins) for any property within this zone. The additional cost is £200-400 for the upgraded unit. The long-term saving in avoided corrosion damage and premature replacement significantly outweighs this premium.
Listed Buildings and Conservation Areas
Brighton and Hove has extensive conservation areas covering much of the Regency and Victorian seafront, the Lanes, Kemp Town and the Seven Dials areas. If your property is listed or in a conservation area, we advise a pre-application discussion with Brighton and Hove City Council’s planning team before installation. In our experience, consent is typically achievable for discreetly positioned units in rear gardens or courtyards — the key is avoiding any visible external units on the principal or secondary street elevations.
Flats and Leasehold Properties
Brighton has a high proportion of converted Victorian flats. For these properties, leaseholder consent from all other leaseholders is typically required for external works. Most managing agents are familiar with air conditioning installation requests and consent is usually granted for well-positioned outdoor units on rear elevations or in back gardens. Allow additional time for the consent process when planning an installation in a converted flat.
Recent Brighton Installations
First floor flat, Brunswick Square BN3 (Grade II listed): Listed building consent obtained from Brighton and Hove Council. Daikin Emura 2.5kW in living room, outdoor unit in rear garden accessed through communal area. Total including planning pre-application: £2,400.
Independent restaurant, North Laine BN1: Three LG cassette units in dining area, wall-mounted unit in kitchen. Overnight installation. Total: £7,800.
Seafront apartment, Marine Parade BN2: Marine-grade Mitsubishi Electric MSZ-LN25 with epoxy-coated outdoor unit. Total: £2,100 (including marine-grade premium).
Call 07833 053749 or request a free survey in Brighton. We cover Brighton, Hove and the wider East Sussex area.