Ducted air conditioning across Cornwall
Ducted systems suit Truro loft conversions and new extensions where ceilings are being boarded anyway. In an older house in Truro, the loft and any existing bulkheads decide whether a ducted layout will work. Damp South West winters make the dehumidifying side of a heat pump almost as useful as its cooling.
Prices in Cornwall
Budget around £5,450–£14,950 per system including VAT for ducted air conditioning in and around Cornwall. 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. On our South West England figures, the Zoned option (motorised dampers or two units for separate floors or room groups) is about £7,450–£10,950.
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
In England, most houses can have an outdoor unit under permitted development if it is no larger than 1.5 m³, meets the MCS 020(a) noise limit of 37 dB(A) at the nearest neighbour's window, and there are no more than two on a detached house or one on other houses. Listed buildings need consent.
The survey
On a survey in Cornwall 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 Cornwall 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
Included with ducted air conditioning across Cornwall:
- Free survey with ceiling-void and loft inspection
- Access hatch and condensate route planned in
- Concealed fan unit and outdoor unit sized to the zone
- Commissioning with airflow balancing per grille
- Insulated ductwork, plenums and grilles
- Wall controller or app control
Towns in Cornwall
Pick your town for local details, or see every service in Cornwall.