New build and renovation air conditioning across Oxfordshire
For new Oxford extensions with flat roofs, the outdoor unit position is best agreed against the architect's drawings. First-fix pipework in Oxford extensions goes in while the joists and studs are open. In the South East, loft rooms and glazed extensions can climb well above the outside temperature on a sunny afternoon.
Prices in Oxfordshire
Guide prices around Oxfordshire run from £495 to £1,095 per indoor position (first fix) including VAT. That is above the UK middle, mainly because labour and access cost more in South East England. What moves a quote in Oxfordshire up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. As an example, the First and second fix option (complete install priced per room including units) would typically be £1,745–£3,595 here.
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
Because the pipework is built into the structure, coordination with your builder matters more than planning here; the outdoor unit follows the same rules as any other installation.
The survey
On a survey in Oxfordshire 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. We book surveys in Oxfordshire at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Included with air conditioning for new builds and renovations across Oxfordshire:
- Commissioning records for building control files
- Nitrogen pressure test and labelled tails
- Vacuum, charge and commissioning
- Design and setting-out with your builder
- Second-fix unit installation
- First-fix pipework, drains and cables
Towns in Oxfordshire
Pick your town for local details, or see every service in Oxfordshire.

