Air conditioning for extensions and kitchen-diners in Brighton
In the South East, loft rooms and glazed extensions can climb well above the outside temperature on a sunny afternoon. An extension in Brighton with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon.
In Brighton, a side wall of a single-storey extension is usually the neatest place for the indoor unit. As well as Brighton itself, our East Sussex coverage takes in Eastbourne, Hastings and the towns around them. We cover BN2 and the streets around them.
Prices in Brighton
Our South East England guide price for air conditioning for extensions and kitchen-diners is £1,745–£5,445 per space, VAT included. Prices here sit above the national middle, reflecting South East England labour rates and parking and access costs. What moves a quote in Brighton up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £2,495–£3,495 in this area.
Single unit
One 3.5–5 kW unit for a medium extension.
Large single
One 5–7 kW unit for a large glazed space.
Twin units
Two indoor units on a multi-split for long or L-shaped spaces.
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
In England, most houses can have an outdoor unit under permitted development if it is no larger than 1.5 m³, meets the MCS 020(a) noise limit of 37 dB(A) at the nearest neighbour's window, and there are no more than two on a detached house or one on other houses. Listed buildings need consent.
The survey
On a survey in Brighton 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 Brighton 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 as standard in Brighton:
- Free survey with glazing and roof heat-gain check
- Placement clear of the hob and oven
- Handover of the remote or app
- One or two units sized for the whole space
- Pressure test, vacuum and commissioning
Nearby
Neighbouring places we cover include Hove (1 mile), Rottingdean (4 miles) and Burgess Hill (9 miles). See all services in Brighton or air conditioning for extensions and kitchen-diners across East Sussex.