Ducted air conditioning in Dorchester
In an older house in Dorchester, the loft and any existing bulkheads decide whether a ducted layout will work. Coastal breezes help, but inland South West towns and glazed rooms still see uncomfortable peaks.
Ducted systems suit Dorchester loft conversions and new extensions where ceilings are being boarded anyway. Dorchester lies roughly 24 miles from Bournemouth, and we cover it as part of Dorset. We cover DT1 and the streets around them.
Prices in Dorchester
Our South West England guide price for ducted air conditioning is £5,450–£14,950 per system, VAT included. It sits near the middle of UK prices. The biggest variables are the pipe route, access for the outdoor unit and the state of the consumer unit, all of which the survey settles. 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
A survey in Dorchester 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. 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
Every job in Dorchester includes:
- Commissioning with airflow balancing per grille
- Concealed fan unit and outdoor unit sized to the zone
- Wall controller or app control
- Free survey with ceiling-void and loft inspection
- Insulated ductwork, plenums and grilles
Nearby
We also cover Weymouth (7 miles), Wareham (14 miles) and Bridport (14 miles). See all services in Dorchester or ducted air conditioning across Dorset.