Garden room and home office air conditioning in Horley
In the South East, loft rooms and glazed extensions can climb well above the outside temperature on a sunny afternoon. Garden offices used every day in Horley need cooling in summer and efficient heat in winter.
For a garden room in Horley, the outdoor unit usually sits on a small stand behind the building. Horley sits around 20 miles from Woking, inside our Surrey area. That includes the RH6 postcode district.
Prices in Horley
Budget around £1,745–£3,845 per system including VAT for garden room and home office air conditioning in and around Horley. That is above the UK middle, mainly because labour and access cost more in South East England. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. As an example, the Popular option (3.5 kW unit with Wi-Fi to warm up before you walk down the garden) would typically be £2,195–£2,995 here.
Essential
2.5 kW unit for a small office pod.
Popular
3.5 kW unit with Wi-Fi to warm up before you walk down the garden.
Premium
5 kW unit for a large studio or gym, or concealed routing.
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
We book surveys in Horley at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. Surveys in Horley cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Included with garden room and home office air conditioning in Horley:
- Pressure test, vacuum and commissioning
- Short pipe run to a ground-mounted outdoor unit
- Compact inverter unit sized to the space
- Free survey including the garden room's electrics
- Fixings into frame or solid sections
Nearby
We also cover Crawley (4 miles), Redhill (5 miles) and Reigate (5 miles). See all services in Horley or garden room and home office air conditioning across Surrey.