New build and renovation air conditioning in St Helens
Milder summers in the North West mean designing for winter comfort as much as for a heatwave. For new St Helens extensions with flat roofs, the outdoor unit position is best agreed against the architect's drawings.
First-fix pipework in St Helens extensions goes in while the joists and studs are open. We cover St Helens as part of Merseyside, roughly 10 miles from Liverpool. Homes in WA10 are all within our coverage.
Prices in St Helens
Air conditioning for new builds and renovations in St Helens typically comes in at £375–£845 per indoor position (first fix) including VAT, based on North West England rates. It is a touch below the UK middle, as trade rates in North West England tend to be. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. As an example, the First and second fix option (complete install priced per room including units) would typically be £1,395–£2,795 here.
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
On build projects the main thing is timing with your builder and electrician; we fit first-fix pipework before plastering and agree the outdoor unit position early.
The survey
We book surveys in St Helens at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. 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.
What is included
Included with air conditioning for new builds and renovations in St Helens:
- Nitrogen pressure test and labelled tails
- Commissioning records for building control files
- Vacuum, charge and commissioning
- Second-fix unit installation
- Design and setting-out with your builder
Nearby
If you are just outside St Helens, we also work in Prescot (3 miles), Ashton in Makerfield (4 miles) and Huyton (5 miles). See all services in St Helens or new build and renovation air conditioning across Merseyside.

