New build and renovation air conditioning in Northolt
The urban heat island effect means London bedrooms can stay uncomfortably warm on summer nights. Renovations in Northolt are the easiest jobs to make invisible, because the pipework goes in before the plaster.
For new Northolt extensions with flat roofs, the outdoor unit position is best agreed against the architect's drawings. Northolt sits around 11 miles from central London, inside our London area. We cover UB5 and the streets around them.
Prices in Northolt
For Northolt, expect roughly £495 to £1,195 per indoor position (first fix), VAT included, adjusted for typical London rates. London is one of the dearer parts of the UK for trades, which shows in the range. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. 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. On a survey in Northolt 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.
What is included
Included as standard in Northolt:
- Design and setting-out with your builder
- Nitrogen pressure test and labelled tails
- Vacuum, charge and commissioning
- Commissioning records for building control files
- Second-fix unit installation
Nearby
If you are just outside Northolt, we also work in Greenford (1 mile), Harrow (3 miles) and Southall (3 miles). See all services in Northolt or new build and renovation air conditioning across London.

