Bedroom and loft air conditioning in Heston
Loft conversions and top-floor bedrooms in Heston gain heat through the roof all day and give it back at night. In London, heat soaks into brick and concrete during the day and comes back out at night, which is when it is hardest to sleep.
For bedrooms in Heston, we place the outdoor unit at the back of the house, away from neighbours' windows. Heston sits around 11 miles from central London, inside our London area. Postcode districts we cover here include TW5.
Prices in Heston
Budget around £1,595–£3,895 per room including VAT for bedroom and loft air conditioning in and around Heston. That is above the UK middle, mainly because labour and access cost more in London. What moves a quote in Heston up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. As an example, the Popular option (low-noise unit with Wi-Fi for a loft room or main bedroom) would typically be £2,045–£2,895 here.
Essential
2–2.5 kW unit for a small bedroom with a short pipe run.
Popular
Low-noise unit with Wi-Fi for a loft room or main bedroom.
Premium
Very quiet model, concealed pipework or a flat-roof stand.
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
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. A survey in Heston 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 as standard in Heston:
- Free survey with roof and glazing heat-gain check
- Neat pipe route from loft to outdoor unit
- Handover of night-time and timer settings
- Access equipment where needed for high-level work
- Quiet inverter unit with night mode
Nearby
We also cover Hounslow (1 mile), Isleworth (2 miles) and Southall (2 miles). See all services in Heston or bedroom and loft air conditioning across London.