New build and renovation air conditioning in Horsham
The South East sees some of the UK's warmest summer days, and south-facing rooms and conservatories feel it first. First-fix pipework in Horsham extensions goes in while the joists and studs are open.
Renovations in Horsham are the easiest jobs to make invisible, because the pipework goes in before the plaster. Horsham lies roughly 7 miles from Crawley, and we cover it as part of West Sussex. That includes the RH12 postcode district.
Prices in Horsham
In South East England, our guide range for air conditioning for new builds and renovations is £495–£1,095 per indoor position (first fix), including VAT. Prices here sit above the national middle, reflecting South East England labour rates and parking and access costs. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. On our South East England figures, the First and second fix option (complete install priced per room including units) is 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 Horsham 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 with air conditioning for new builds and renovations in Horsham:
- Vacuum, charge and commissioning
- First-fix pipework, drains and cables
- Commissioning records for building control files
- Nitrogen pressure test and labelled tails
- Second-fix unit installation
Nearby
Nearby, we also cover Crawley (7 miles), Horley (11 miles) and Haywards Heath (11 miles). See all services in Horsham or new build and renovation air conditioning across West Sussex.

