Air conditioning for extensions and kitchen-diners in Ruislip
In Ruislip, a side wall of a single-storey extension is usually the neatest place for the indoor unit. The urban heat island effect means London bedrooms can stay uncomfortably warm on summer nights.
For a kitchen-diner in Ruislip, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Our London coverage takes in Ruislip, about 14 miles from central London. We cover HA4 and the streets around them.
Prices in Ruislip
Our London guide price for air conditioning for extensions and kitchen-diners is £1,895–£5,845 per space, VAT included. That is above the UK middle, mainly because labour and access cost more in London. 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. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £2,695–£3,745 in this area.
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
Surveys in Ruislip cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. 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
Here is what is included on every job in Ruislip:
- Free survey with glazing and roof heat-gain check
- One or two units sized for the whole space
- Hidden routes during the build, or neat surface routes after
- Handover of the remote or app
- Pressure test, vacuum and commissioning
Nearby
We also cover Northolt (3 miles), Uxbridge (3 miles) and Harrow (4 miles). See all services in Ruislip or air conditioning for extensions and kitchen-diners across London.