Air conditioning for extensions and kitchen-diners in Willesden
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. In Willesden, a side wall of a single-storey extension is usually the neatest place for the indoor unit.
For a kitchen-diner in Willesden, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Willesden is about 5 miles from central London and falls within our London coverage. That includes the NW10 postcode district.
Prices in Willesden
Our London guide price for air conditioning for extensions and kitchen-diners is £1,895–£5,845 per space, VAT included. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £2,695–£3,745 in this area.
Single unit
One 3.5–5 kW unit for a medium extension.
Large single
One 5–7 kW unit for a large glazed space.
Twin units
Two indoor units on a multi-split for long or L-shaped spaces.
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. 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 Willesden:
- Handover of the remote or app
- One or two units sized for the whole space
- Free survey with glazing and roof heat-gain check
- Placement clear of the hob and oven
- Hidden routes during the build, or neat surface routes after
Nearby
Close to Willesden, our coverage also includes Cricklewood (2 miles), Notting Hill (2 miles) and Shepherds Bush (2 miles). See all services in Willesden or air conditioning for extensions and kitchen-diners across London.