New build and renovation air conditioning in Winchester
Summers in the South East are among the warmest in the country, so cooling often comes first, with efficient winter heating as a bonus. Renovations in Winchester are the easiest jobs to make invisible, because the pipework goes in before the plaster.
For new Winchester extensions with flat roofs, the outdoor unit position is best agreed against the architect's drawings. We cover Winchester as part of Hampshire, roughly 12 miles from Southampton. That includes the SO23 and SO25 postcode districts.
Prices in Winchester
Guide prices around Winchester run from £495 to £1,095 per indoor position (first fix) including VAT. South East England is one of the dearer parts of the UK for trades, which shows in the range. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. For reference, the First and second fix option in Winchester (complete install priced per room including units) usually comes to about £1,745–£3,595.
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
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. 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.
What is included
Included as standard in Winchester:
- Design and setting-out with your builder
- First-fix pipework, drains and cables
- Second-fix unit installation
- Commissioning records for building control files
- Vacuum, charge and commissioning
Nearby
Neighbouring places we cover include Eastleigh (7 miles), Southampton (12 miles) and Totton (13 miles). See all services in Winchester or new build and renovation air conditioning across Hampshire.

