New build and renovation air conditioning in St Austell
In the South West, a system that heats well through damp winters is often as valuable as summer cooling. First-fix pipework in St Austell extensions goes in while the joists and studs are open.
For new St Austell extensions with flat roofs, the outdoor unit position is best agreed against the architect's drawings. St Austell is about 13 miles from Truro and falls within our Cornwall coverage. That includes the PL25 postcode district.
Prices in St Austell
For St Austell, expect roughly £395 to £895 per indoor position (first fix), VAT included, adjusted for typical South West England rates. That is broadly in line with national guide prices. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. On our South West England figures, the First and second fix option (complete install priced per room including units) is about £1,450–£2,950.
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
On a survey in St Austell 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. A survey in St Austell 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 St Austell covers:
- Nitrogen pressure test and labelled tails
- Commissioning records for building control files
- Vacuum, charge and commissioning
- Second-fix unit installation
- First-fix pipework, drains and cables
Nearby
Close to St Austell, our coverage also includes Bodmin (9 miles), Truro (13 miles) and Liskeard (16 miles). See all services in St Austell or new build and renovation air conditioning across Cornwall.