New build and renovation air conditioning in Hounslow
First-fix pipework in Hounslow extensions goes in while the joists and studs are open. 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.
For new Hounslow extensions with flat roofs, the outdoor unit position is best agreed against the architect's drawings. We cover Hounslow as part of London, roughly 10 miles from central London. Homes in TW3, TW4 and TW6 are all within our coverage.
Prices in Hounslow
Our London guide price for air conditioning for new builds and renovations is £495–£1,195 per indoor position (first fix), VAT included. London is one of the dearer parts of the UK for trades, which shows in the range. What moves a quote in Hounslow 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 Hounslow (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
First-fix work is about coordination, while the outdoor unit follows the normal planning rules for the property.
The survey
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. A survey in Hounslow 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
What a job in Hounslow covers:
- Second-fix unit installation
- Design and setting-out with your builder
- Commissioning records for building control files
- Nitrogen pressure test and labelled tails
- Vacuum, charge and commissioning
Nearby
If you are just outside Hounslow, we also work in Isleworth (under a mile), Heston (1 mile) and Richmond (2 miles). See all services in Hounslow or new build and renovation air conditioning across London.