Air conditioning for extensions and kitchen-diners in Southend-on-Sea
Long sunny spells in the East of England put conservatories and top-floor rooms under real pressure. For a kitchen-diner in Southend-on-Sea, we place the indoor unit clear of the hob and plan the outdoor unit at the rear.
In Southend-on-Sea, a side wall of a single-storey extension is usually the neatest place for the indoor unit. As well as Southend-on-Sea itself, our Essex coverage takes in Basildon, Colchester and the towns around them. Coverage includes SS1 and SS22.
Prices in Southend-on-Sea
For Southend-on-Sea, expect roughly £1,595 to £4,995 per space, VAT included, adjusted for typical East of England rates. That is above the UK middle, mainly because labour and access cost more in the East of England. 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 Southend-on-Sea (one 5–7 kW unit for a large glazed space) usually comes to about £2,295–£3,195.
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
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. A survey in Southend-on-Sea 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 with air conditioning for extensions and kitchen-diners in Southend-on-Sea:
- Pressure test, vacuum and commissioning
- Free survey with glazing and roof heat-gain check
- Placement clear of the hob and oven
- Hidden routes during the build, or neat surface routes after
- One or two units sized for the whole space
Nearby
Nearby, we also cover Rayleigh (6 miles), Canvey Island (6 miles) and South Benfleet (7 miles). See all services in Southend-on-Sea or air conditioning for extensions and kitchen-diners across Essex.

