Ducted air conditioning in Thamesmead
Ducted systems suit Thamesmead loft conversions and new extensions where ceilings are being boarded anyway. 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 a renovation in Thamesmead, the best time to plan ducted cooling is before the plasterers arrive. Thamesmead lies roughly 11 miles from central London, and we cover it as part of London. We cover SE2 and SE28 and the streets around them.
Prices in Thamesmead
Our London guide price for ducted air conditioning is £7,195–£19,745 per system, VAT included. That is above the UK middle, mainly because labour and access cost more in London. 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
England's rules let most houses fit an outdoor unit without a planning application, as long as the size, number and MCS 020(a) noise conditions are met. Flats, listed buildings and roof-mounted units are treated differently.
The survey
Surveys in Thamesmead cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. 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.
What is included
Included as standard in Thamesmead:
- Free survey with ceiling-void and loft inspection
- Insulated ductwork, plenums and grilles
- Concealed fan unit and outdoor unit sized to the zone
- Commissioning with airflow balancing per grille
- Access hatch and condensate route planned in
Nearby
If you are just outside Thamesmead, we also work in Barking (3 miles), Welling (3 miles) and Becontree (3 miles). See all services in Thamesmead or ducted air conditioning across London.

