New build and renovation air conditioning in Eltham
For new Eltham 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.
First-fix pipework in Eltham extensions goes in while the joists and studs are open. We cover Eltham as part of London, roughly 8 miles from central London. Coverage includes SE9.
Prices in Eltham
Air conditioning for new builds and renovations in Eltham typically comes in at £495–£1,195 per indoor position (first fix) including VAT, based on London rates. That is above the UK middle, mainly because labour and access cost more in London. What moves a quote in Eltham up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. Typical First and second fix work (complete install priced per room including units) lands around £1,895–£3,895 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
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. A survey in Eltham 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.
What is included
Every job in Eltham includes:
- Nitrogen pressure test and labelled tails
- Design and setting-out with your builder
- First-fix pipework, drains and cables
- Vacuum, charge and commissioning
- Second-fix unit installation
Nearby
If you are just outside Eltham, we also work in Blackheath (2 miles), Welling (3 miles) and Catford (3 miles). See all services in Eltham or new build and renovation air conditioning across London.