Garden room and home office air conditioning in Ewell
For a garden room in Ewell, the outdoor unit usually sits on a small stand behind the building. Summers in the South East are among the warmest in the country, so cooling often comes first, with efficient winter heating as a bonus.
We check the armoured supply cable on every Ewell garden room before quoting. Ewell lies roughly 14 miles from Woking, and we cover it as part of Surrey. That includes the KT17 postcode district.
Prices in Ewell
Budget around £1,745–£3,845 per system including VAT for garden room and home office air conditioning in and around Ewell. That is above the UK middle, mainly because labour and access cost more in South East England. The biggest variables are the pipe route, access for the outdoor unit and the state of the consumer unit, all of which the survey settles. For reference, the Popular option in Ewell (3.5 kW unit with Wi-Fi to warm up before you walk down the garden) usually comes to about £2,195–£2,995.
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
At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote. A survey in Ewell 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
Included with garden room and home office air conditioning in Ewell:
- Handover and timer set-up for working hours
- Free survey including the garden room's electrics
- Compact inverter unit sized to the space
- Pressure test, vacuum and commissioning
- Fixings into frame or solid sections
Nearby
We also cover Epsom (2 miles), Sutton (2 miles) and Banstead (3 miles). See all services in Ewell or garden room and home office air conditioning across Surrey.

