Air conditioning for extensions and kitchen-diners in Putney
For a kitchen-diner in Putney, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. In London, heat soaks into brick and concrete during the day and comes back out at night, which is when it is hardest to sleep.
In Putney, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Putney sits around 5 miles from central London, inside our London area. That includes the SW15 postcode district.
Prices in Putney
In London, our guide range for air conditioning for extensions and kitchen-diners is £1,895–£5,845 per space, including VAT. London is one of the dearer parts of the UK for trades, which shows in the range. 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. As an example, the Large single option (one 5–7 kW unit for a large glazed space) would typically be £2,695–£3,745 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
For most houses in Putney, 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
Surveys in Putney cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. 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
Here is what is included on every job in Putney:
- Handover of the remote or app
- Free survey with glazing and roof heat-gain check
- Placement clear of the hob and oven
- Hidden routes during the build, or neat surface routes after
- Pressure test, vacuum and commissioning
Nearby
Neighbouring places we cover include Barnes (2 miles), Fulham (2 miles) and Wimbledon (3 miles). See all services in Putney or air conditioning for extensions and kitchen-diners across London.

