Heat load surveys and system design 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. No two rooms in Willesden gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing.
Every Willesden quote starts with a room-by-room survey rather than a guess from floor area. Willesden lies roughly 5 miles from central London, and we cover it as part of London. We cover NW10 and the streets around them.
Prices in Willesden
Guide prices around Willesden run from £495 to £1,645 for a standalone design pack including VAT. London is one of the dearer parts of the UK for trades, which shows in the range. The design pack price depends mainly on the number of rooms and whether full drawings and equipment schedules are needed. As an example, the Design pack option (drawings and schedules for one home) would typically be £495–£1,045 here.
Home survey
Free with an installation quote.
Design pack
Drawings and schedules for one home.
Self-build pack
Whole-house design for a new build.
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
We book surveys in Willesden at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. 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
Every job in Willesden includes:
- Noise check to the nearest neighbour
- Written proposal with options
- Electrical load for your electrician
- Room-by-room heat gain and heat loss
- Equipment selection and outdoor unit sizing
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 heat load surveys and system design across London.