Ducted air conditioning in St Austell
For a renovation in St Austell, the best time to plan ducted cooling is before the plasterers arrive. Damp South West winters make the dehumidifying side of a heat pump almost as useful as its cooling.
Ducted systems suit St Austell loft conversions and new extensions where ceilings are being boarded anyway. St Austell is about 13 miles from Truro and falls within our Cornwall coverage. Coverage includes PL25.
Prices in St Austell
Ducted air conditioning in St Austell typically comes in at £5,450–£14,950 per system including VAT, based on South West England rates. It sits near the middle of UK prices. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. As an example, the Zoned option (motorised dampers or two units for separate floors or room groups) would typically be £7,450–£10,950 here.
Single zone
One ducted unit serving two or three rooms from a loft or void.
Zoned
Motorised dampers or two units for separate floors or room groups.
Whole home
Multiple ducted units with linear slot diffusers and smart control.
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%.
Planning and permissions
England's rules let most houses fit an outdoor unit without a planning application, as long as the size, number and MCS 020(a) noise conditions are met. Flats, listed buildings and roof-mounted units are treated differently.
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. 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
What a job in St Austell covers:
- Free survey with ceiling-void and loft inspection
- Insulated ductwork, plenums and grilles
- Commissioning with airflow balancing per grille
- Access hatch and condensate route planned in
- Wall controller or app control
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 ducted air conditioning across Cornwall.