Conservatory air conditioning in Horsham
In Horsham, the indoor unit usually goes on the original house wall inside the conservatory. In the South East, loft rooms and glazed extensions can climb well above the outside temperature on a sunny afternoon.
If your conservatory in Horsham faces south, that is where overheating is worst. Horsham sits around 7 miles from Crawley, inside our West Sussex area. Homes in RH12 are all within our coverage.
Prices in Horsham
For Horsham, expect roughly £1,745 to £4,195 per system, VAT included, adjusted for typical South East England rates. That is above the UK middle, mainly because labour and access cost more in South East England. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. On our South East England figures, the Popular option (5 kW unit with Wi-Fi for a medium conservatory or orangery) is about £2,245–£3,145.
Essential
3.5 kW unit for a small lean-to or Edwardian conservatory.
Popular
5 kW unit with Wi-Fi for a medium conservatory or orangery.
Premium
7 kW or console-plus-wall setup for large glazed rooms.
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
Surveys in Horsham cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. 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.
What is included
Every job in Horsham includes:
- Fixing to the house wall or a dwarf wall
- Free survey with glazing and roof heat-gain check
- Reversible inverter unit sized for glass
- Pipe route and outdoor unit position agreed
- Pressure test, vacuum and commissioning
Nearby
Close to Horsham, our coverage also includes Crawley (7 miles), Horley (11 miles) and Haywards Heath (11 miles). See all services in Horsham or conservatory air conditioning across West Sussex.