Air conditioning for extensions and kitchen-diners in Purley
For a kitchen-diner in Purley, 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.
An extension in Purley with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Purley is about 11 miles from central London and falls within our London coverage. That includes the CR8 postcode district.
Prices in Purley
Guide prices around Purley run from £1,895 to £5,845 per space including VAT. 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. For reference, the Large single option in Purley (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
For most houses in Purley, the outdoor unit is permitted development if it passes the MCS 020(a) noise check (37 dB(A) or less at the nearest neighbouring window) and stays within the size and number limits. We run that check on survey.
The survey
A survey in Purley 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. On a survey in Purley 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.
What is included
What a job in Purley covers:
- One or two units sized for the whole space
- Hidden routes during the build, or neat surface routes after
- Pressure test, vacuum and commissioning
- Free survey with glazing and roof heat-gain check
- Handover of the remote or app
Nearby
We also cover Coulsdon (2 miles), South Croydon (2 miles) and Carshalton (3 miles). See all services in Purley or air conditioning for extensions and kitchen-diners across London.