Ducted air conditioning in New Malden
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 New Malden, the loft and any existing bulkheads decide whether a ducted layout will work.
For a renovation in New Malden, the best time to plan ducted cooling is before the plasterers arrive. New Malden sits around 9 miles from central London, inside our London area. Postcode districts we cover here include KT3.
Prices in New Malden
Guide prices around New Malden 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. What moves a quote in New Malden 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 Zoned option (motorised dampers or two units for separate floors or room groups) would typically be £9,845–£14,445 here.
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
For most houses in New Malden, the outdoor unit is permitted development if it passes the MCS 020(a) noise check (37 dB(A) or less at the nearest neighbouring window) and stays within the size and number limits. We run that check on survey.
The survey
On a survey in New Malden 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. We book surveys in New Malden at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Every job in New Malden includes:
- Free survey with ceiling-void and loft inspection
- Access hatch and condensate route planned in
- Concealed fan unit and outdoor unit sized to the zone
- Commissioning with airflow balancing per grille
- Insulated ductwork, plenums and grilles
Nearby
We also cover Surbiton (2 miles), Morden (3 miles) and Wimbledon (3 miles). See all services in New Malden or ducted air conditioning across London.