Ducted air conditioning in Streatham
For a renovation in Streatham, the best time to plan ducted cooling is before the plasterers arrive. London's dense streets hold heat overnight, so top-floor flats and loft rooms often stay warm long after sunset.
In an older house in Streatham, the loft and any existing bulkheads decide whether a ducted layout will work. We cover Streatham as part of London, roughly 5 miles from central London. Postcode districts we cover here include SW16.
Prices in Streatham
Our London guide price for ducted air conditioning is £7,195–£19,745 per system, VAT included. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. 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. Typical Zoned work (motorised dampers or two units for separate floors or room groups) lands around £9,845–£14,445 in this area.
Single zone
One ducted unit serving two or three rooms from a loft or void.
Zoned
Motorised dampers or two units for separate floors or room groups.
Whole home
Multiple ducted units with linear slot diffusers and smart control.
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. On a survey in Streatham 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.
What is included
Every job in Streatham includes:
- Concealed fan unit and outdoor unit sized to the zone
- Commissioning with airflow balancing per grille
- Free survey with ceiling-void and loft inspection
- Wall controller or app control
- Insulated ductwork, plenums and grilles
Nearby
Close to Streatham, our coverage also includes Mitcham (2 miles), Brixton (3 miles) and Wimbledon (3 miles). See all services in Streatham or ducted air conditioning across London.