Ducted air conditioning in Winchester
Ducted systems suit Winchester loft conversions and new extensions where ceilings are being boarded anyway. Hot spells reach the South East early, which makes spring the easiest time to arrange an installation.
For a renovation in Winchester, the best time to plan ducted cooling is before the plasterers arrive. Our Hampshire coverage takes in Winchester, about 12 miles from Southampton. That includes the SO23 and SO25 postcode districts.
Prices in Winchester
Guide prices around Winchester run from £6,645 to £18,245 per system including VAT. Prices here sit above the national middle, reflecting South East England labour rates and parking and access costs. What moves a quote in Winchester up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. For reference, the Zoned option in Winchester (motorised dampers or two units for separate floors or room groups) usually comes to about £9,095–£13,345.
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
Since 29 May 2025, England's permitted development rules allow larger outdoor units (up to 1.5 m³) and no longer require a 1 m gap to the boundary, provided the MCS 020(a) noise check is met. Listed buildings and pitched-roof installs still need permission.
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. A survey in Winchester 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 Winchester covers:
- Free survey with ceiling-void and loft inspection
- Concealed fan unit and outdoor unit sized to the zone
- Insulated ductwork, plenums and grilles
- Wall controller or app control
- Commissioning with airflow balancing per grille
Nearby
If you are just outside Winchester, we also work in Eastleigh (7 miles), Southampton (12 miles) and Totton (13 miles). See all services in Winchester or ducted air conditioning across Hampshire.