Air conditioning for extensions and kitchen-diners in Greenwich
London's dense streets hold heat overnight, so top-floor flats and loft rooms often stay warm long after sunset. An extension in Greenwich with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon.
In Greenwich, a side wall of a single-storey extension is usually the neatest place for the indoor unit. We cover Greenwich as part of London, roughly 5 miles from central London. We cover SE10 and the streets around them.
Prices in Greenwich
Budget around £1,895–£5,845 per space including VAT for air conditioning for extensions and kitchen-diners in and around Greenwich. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. For reference, the Large single option in Greenwich (one 5–7 kW unit for a large glazed space) usually comes to about £2,695–£3,745.
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
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. We book surveys in Greenwich at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Included as standard in Greenwich:
- Placement clear of the hob and oven
- Free survey with glazing and roof heat-gain check
- One or two units sized for the whole space
- Pressure test, vacuum and commissioning
- Hidden routes during the build, or neat surface routes after
Nearby
If you are just outside Greenwich, we also work in Blackheath (1 mile), Canary Wharf (2 miles) and Catford (2 miles). See all services in Greenwich or air conditioning for extensions and kitchen-diners across London.