New build and renovation air conditioning in Sevenoaks
The South East sees some of the UK's warmest summer days, and south-facing rooms and conservatories feel it first. For new Sevenoaks extensions with flat roofs, the outdoor unit position is best agreed against the architect's drawings.
First-fix pipework in Sevenoaks extensions goes in while the joists and studs are open. Sevenoaks lies roughly 14 miles from Maidstone, and we cover it as part of Kent. Homes in TN13 are all within our coverage.
Prices in Sevenoaks
Guide prices around Sevenoaks run from £495 to £1,095 per indoor position (first fix) including VAT. South East England is one of the dearer parts of the UK for trades, which shows in the range. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. Typical First and second fix work (complete install priced per room including units) lands around £1,745–£3,595 in this area.
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
First-fix work is about coordination, while the outdoor unit follows the normal planning rules for the property.
The survey
On a survey in Sevenoaks 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. Surveys in Sevenoaks cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
What a job in Sevenoaks covers:
- Nitrogen pressure test and labelled tails
- First-fix pipework, drains and cables
- Commissioning records for building control files
- Design and setting-out with your builder
- Vacuum, charge and commissioning
Nearby
Nearby, we also cover Tonbridge (6 miles), Swanley (9 miles) and Tunbridge Wells (10 miles). See all services in Sevenoaks or new build and renovation air conditioning across Kent.

