New build and renovation air conditioning in Warminster
Renovations in Warminster are the easiest jobs to make invisible, because the pipework goes in before the plaster. South West summers are milder on the coast, but sheltered towns and south-facing rooms still overheat, and efficient winter heating matters just as much.
For new Warminster extensions with flat roofs, the outdoor unit position is best agreed against the architect's drawings. We cover Warminster as part of Wiltshire, roughly 30 miles from Swindon. That includes the BA12 postcode district.
Prices in Warminster
Our South West England guide price for air conditioning for new builds and renovations is £395–£895 per indoor position (first fix), VAT included. That is close to the UK middle for this kind of work. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. Typical First and second fix work (complete install priced per room including units) lands around £1,450–£2,950 in this area.
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
On build projects the main thing is timing with your builder and electrician; we fit first-fix pipework before plastering and agree the outdoor unit position early.
The survey
On a survey in Warminster 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 Warminster 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 Warminster covers:
- Vacuum, charge and commissioning
- First-fix pipework, drains and cables
- Design and setting-out with your builder
- Second-fix unit installation
- Nitrogen pressure test and labelled tails
Nearby
Neighbouring places we cover include Frome (6 miles), Trowbridge (8 miles) and Devizes (13 miles). See all services in Warminster or new build and renovation air conditioning across Wiltshire.

