Air conditioning for extensions and kitchen-diners in Colchester
Low rainfall and long summer days in the East of England make south-facing rooms the first to overheat. An extension in Colchester with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon.
In Colchester, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Colchester lies roughly 26 miles from Southend-on-Sea, and we cover it as part of Essex. Homes in CO1 are all within our coverage.
Prices in Colchester
Budget around £1,595–£4,995 per space including VAT for air conditioning for extensions and kitchen-diners in and around Colchester. 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. As an example, the Large single option (one 5–7 kW unit for a large glazed space) would typically be £2,295–£3,195 here.
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
On a survey in Colchester the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows. Surveys in Colchester cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Every job in Colchester includes:
- Placement clear of the hob and oven
- Hidden routes during the build, or neat surface routes after
- Pressure test, vacuum and commissioning
- Free survey with glazing and roof heat-gain check
- One or two units sized for the whole space
Nearby
We also cover Sudbury (13 miles), Clacton-on-Sea (13 miles) and Witham (13 miles). See all services in Colchester or air conditioning for extensions and kitchen-diners across Essex.