Air conditioning for extensions and kitchen-diners in Chichester
The South East sees some of the UK's warmest summer days, and south-facing rooms and conservatories feel it first. For a kitchen-diner in Chichester, we place the indoor unit clear of the hob and plan the outdoor unit at the rear.
An extension in Chichester with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. We cover Chichester as part of West Sussex, roughly 32 miles from Crawley. Homes in PO19 are all within our coverage.
Prices in Chichester
For Chichester, 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. For reference, the Large single option in Chichester (one 5–7 kW unit for a large glazed space) usually comes to 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
For most houses in Chichester, 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
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. The free survey is where the real price is set: room measurements, pipe and drain routes, electrical checks and the outdoor unit position, all written into your quote.
What is included
Every job in Chichester includes:
- Free survey with glazing and roof heat-gain check
- Pressure test, vacuum and commissioning
- Hidden routes during the build, or neat surface routes after
- One or two units sized for the whole space
- Handover of the remote or app
Nearby
If you are just outside Chichester, we also work in Bognor Regis (6 miles), Havant (9 miles) and Littlehampton (11 miles). See all services in Chichester or air conditioning for extensions and kitchen-diners across West Sussex.