New build and renovation air conditioning across London
Renovations in Westminster are the easiest jobs to make invisible, because the pipework goes in before the plaster. For new Westminster extensions with flat roofs, the outdoor unit position is best agreed against the architect's drawings. 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.
Prices in London
Our London guide price for air conditioning for new builds and renovations is £495–£1,195 per indoor position (first fix), 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. On our London figures, the First and second fix option (complete install priced per room including units) is about £1,895–£3,895.
First fix only
Pipework and drains to each position for a later install.
First and second fix
Complete install priced per room including units.
Ducted design and build
Concealed ducted system designed into the build.
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%.
Working with your builder
On build projects the main thing is timing with your builder and electrician; we fit first-fix pipework before plastering and agree the outdoor unit position early.
The survey
On a survey in London 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. We book surveys in London at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Included with air conditioning for new builds and renovations across London:
- Vacuum, charge and commissioning
- First-fix pipework, drains and cables
- Commissioning records for building control files
- Second-fix unit installation
- Nitrogen pressure test and labelled tails
- Design and setting-out with your builder
Districts in London
Pick your district for local details, or see every service in London.
- Islington
- Westminster
- Bexley
- Barking
- Archway
- Sutton
- Croydon
- Ilford
- Enfield
- Harrow
- Tottenham
- Walthamstow
- Dagenham
- Becontree
- Romford
- Hayes
- Wembley
- Fulham
- Edmonton
- Southall
- Putney
- Battersea
- Canary Wharf
- Purley
- Peckham
- Chingford
- Uxbridge
- Wimbledon
- Stamford Hill
- Brixton
- Hounslow
- Finchley
- Cricklewood
- Mitcham
- Feltham
- Acton
- Beckenham
- Chelsea
- Streatham
- South Croydon
- Leytonstone
- Eltham
- Morden
- Carshalton
- Catford
- Willesden
- Canning Town
- Holloway
- Welling
- Shepherds Bush
- Surbiton
- Greenford
- Heston
- Stratford
- Chiswick
- Thamesmead
- Ruislip
- Greenwich
- Barnet
- Kilburn
- Wood Green
- Muswell Hill
- Bow
- Highbury
- Camden Town
- Northolt
- Coulsdon
- Hornchurch
- Blackheath
- Isleworth
- Chalk Farm
- New Malden
- Hanworth
- Woodford Green
- Hadley Wood
- Richmond
- Barnes
- Notting Hill