Air conditioning for extensions and kitchen-diners in Littlehampton
For a kitchen-diner in Littlehampton, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. In the South East, loft rooms and glazed extensions can climb well above the outside temperature on a sunny afternoon.
An extension in Littlehampton with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Littlehampton lies roughly 26 miles from Crawley, and we cover it as part of West Sussex. That includes the BN17 postcode district.
Prices in Littlehampton
Budget around £1,745–£5,445 per space including VAT for air conditioning for extensions and kitchen-diners in and around Littlehampton. 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. 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
A survey in Littlehampton 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. Surveys in Littlehampton cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
What a job in Littlehampton covers:
- Hidden routes during the build, or neat surface routes after
- Handover of the remote or app
- Placement clear of the hob and oven
- One or two units sized for the whole space
- Free survey with glazing and roof heat-gain check
Nearby
If you are just outside Littlehampton, we also work in Bognor Regis (6 miles), Worthing (7 miles) and Chichester (11 miles). See all services in Littlehampton or air conditioning for extensions and kitchen-diners across West Sussex.

