Air conditioning for extensions and kitchen-diners across East Sussex
For a kitchen-diner in Brighton, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. In Brighton, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Hot spells reach the South East early, which makes spring the easiest time to arrange an installation.
Prices in East Sussex
In South East England, our guide range for air conditioning for extensions and kitchen-diners is £1,745–£5,445 per space, including VAT. South East England is one of the dearer parts of the UK for trades, which shows in the range. 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. 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
For most houses in East 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
We book surveys in East Sussex at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. Surveys in East Sussex cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Included with air conditioning for extensions and kitchen-diners across East Sussex:
- One or two units sized for the whole space
- Pressure test, vacuum and commissioning
- Hidden routes during the build, or neat surface routes after
- Free survey with glazing and roof heat-gain check
- Placement clear of the hob and oven
- Handover of the remote or app
Towns in East Sussex
Pick your town for local details, or see every service in East Sussex.