Garden room and home office air conditioning in Feltham
Garden offices used every day in Feltham need cooling in summer and efficient heat in winter. London's dense streets hold heat overnight, so top-floor flats and loft rooms often stay warm long after sunset.
For a garden room in Feltham, the outdoor unit usually sits on a small stand behind the building. Our London coverage takes in Feltham, about 13 miles from central London. Postcode districts we cover here include TW13.
Prices in Feltham
Our London guide price for garden room and home office air conditioning is £1,895–£4,145 per system, VAT included. Prices here sit above the national middle, reflecting London 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 London figures, the Popular option (3.5 kW unit with Wi-Fi to warm up before you walk down the garden) is about £2,345–£3,245.
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
On a survey in Feltham 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. 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
What a job in Feltham covers:
- Fixings into frame or solid sections
- Short pipe run to a ground-mounted outdoor unit
- Compact inverter unit sized to the space
- Pressure test, vacuum and commissioning
- Handover and timer set-up for working hours
Nearby
Nearby, we also cover Hanworth (2 miles), Ashford, Surrey (2 miles) and Hounslow (3 miles). See all services in Feltham or garden room and home office air conditioning across London.