Air conditioning for extensions and kitchen-diners in Harrow
For a kitchen-diner in Harrow, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. London's dense streets hold heat overnight, so top-floor flats and loft rooms often stay warm long after sunset.
In Harrow, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Our London coverage takes in Harrow, about 10 miles from central London. Homes in HA2 are all within our coverage.
Prices in Harrow
Budget around £1,895–£5,845 per space including VAT for air conditioning for extensions and kitchen-diners in and around Harrow. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. 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. On our London figures, the Large single option (one 5–7 kW unit for a large glazed space) is 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
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
We book surveys in Harrow at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. 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.
What is included
Included as standard in Harrow:
- Pressure test, vacuum and commissioning
- Hidden routes during the build, or neat surface routes after
- Handover of the remote or app
- Free survey with glazing and roof heat-gain check
- One or two units sized for the whole space
Nearby
We also cover Wembley (2 miles), Northolt (3 miles) and Greenford (4 miles). See all services in Harrow or air conditioning for extensions and kitchen-diners across London.