New build and renovation air conditioning in Blackheath
For new Blackheath extensions with flat roofs, the outdoor unit position is best agreed against the architect's drawings. Many London homes are flats or tall terraces, where heat rises to the top floor and the bedrooms bear the brunt of a hot spell.
First-fix pipework in Blackheath extensions goes in while the joists and studs are open. Our London coverage takes in Blackheath, about 6 miles from central London. We cover SE3 and the streets around them.
Prices in Blackheath
Guide prices around Blackheath run from £495 to £1,195 per indoor position (first fix) including VAT. London is one of the dearer parts of the UK for trades, which shows in the range. What moves a quote in Blackheath up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. For reference, the First and second fix option in Blackheath (complete install priced per room including units) usually comes to 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
Because the pipework is built into the structure, coordination with your builder matters more than planning here; the outdoor unit follows the same rules as any other installation.
The survey
On a survey in Blackheath 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. The free survey is where the real price is set: room measurements, pipe and drain routes, electrical checks and the outdoor unit position, all written into your quote.
What is included
What a job in Blackheath covers:
- Vacuum, charge and commissioning
- First-fix pipework, drains and cables
- Design and setting-out with your builder
- Commissioning records for building control files
- Nitrogen pressure test and labelled tails
Nearby
If you are just outside Blackheath, we also work in Greenwich (1 mile), Catford (2 miles) and Eltham (2 miles). See all services in Blackheath or new build and renovation air conditioning across London.