Air conditioning for extensions and kitchen-diners in Hastings
In Hastings, a side wall of a single-storey extension is usually the neatest place for the indoor unit. The South East sees some of the UK's warmest summer days, and south-facing rooms and conservatories feel it first.
An extension in Hastings with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Our East Sussex coverage takes in Hastings, about 31 miles from Brighton. We cover TN34 and the streets around them.
Prices in Hastings
For Hastings, expect roughly £1,745 to £5,445 per space, VAT included, adjusted for typical South East England rates. Prices here sit above the national middle, reflecting South East England labour rates and parking and access costs. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. On our South East England figures, the Large single option (one 5–7 kW unit for a large glazed space) is about £2,495–£3,495.
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
England's rules let most houses fit an outdoor unit without a planning application, as long as the size, number and MCS 020(a) noise conditions are met. Flats, listed buildings and roof-mounted units are treated differently.
The survey
At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote. We book surveys in Hastings at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Every job in Hastings includes:
- Free survey with glazing and roof heat-gain check
- Hidden routes during the build, or neat surface routes after
- Pressure test, vacuum and commissioning
- Handover of the remote or app
- Placement clear of the hob and oven
Nearby
Neighbouring places we cover include Bexhill-on-Sea (5 miles), Hailsham (14 miles) and Eastbourne (14 miles). See all services in Hastings or air conditioning for extensions and kitchen-diners across East Sussex.

