Ducted air conditioning in Blackheath
The urban heat island effect means London bedrooms can stay uncomfortably warm on summer nights. For a renovation in Blackheath, the best time to plan ducted cooling is before the plasterers arrive.
In an older house in Blackheath, the loft and any existing bulkheads decide whether a ducted layout will work. Blackheath is about 6 miles from central London and falls within our London coverage. Homes in SE3 are all within our coverage.
Prices in Blackheath
Guide prices around Blackheath run from £7,195 to £19,745 per system including VAT. That is above the UK middle, mainly because labour and access cost more in London. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. 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. A survey in Blackheath 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
Here is what is included on every job in Blackheath:
- Concealed fan unit and outdoor unit sized to the zone
- Access hatch and condensate route planned in
- Wall controller or app control
- Insulated ductwork, plenums and grilles
- Commissioning with airflow balancing per grille
Nearby
We also cover Greenwich (1 mile), Catford (2 miles) and Eltham (2 miles). See all services in Blackheath or ducted air conditioning across London.