Ducted air conditioning in Chelmsford
In an older house in Chelmsford, the loft and any existing bulkheads decide whether a ducted layout will work. Low rainfall and long summer days in the East of England make south-facing rooms the first to overheat.
Ducted systems suit Chelmsford loft conversions and new extensions where ceilings are being boarded anyway. We cover Chelmsford as part of Essex, roughly 17 miles from Southend-on-Sea. Homes in CM1 are all within our coverage.
Prices in Chelmsford
For Chelmsford, expect roughly £6,095 to £16,745 per system, VAT included, adjusted for typical East of England rates. The East of England is one of the dearer parts of the UK for trades, which shows in the range. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. For reference, the Zoned option in Chelmsford (motorised dampers or two units for separate floors or room groups) usually comes to about £8,345–£12,245.
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
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. 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.
What is included
Included with ducted air conditioning in Chelmsford:
- 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
- Wall controller or app control
- Insulated ductwork, plenums and grilles
Nearby
We also cover Billericay (8 miles), Witham (9 miles) and Maldon (9 miles). See all services in Chelmsford or ducted air conditioning across Essex.