Heat load surveys and system design in Southall
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 self-builds and extensions in Southall, a standalone design pack can go straight to your builder.
No two rooms in Southall gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing. Our London coverage takes in Southall, about 11 miles from central London. Coverage includes UB1.
Prices in Southall
Budget around £495–£1,645 for a standalone design pack including VAT for heat load surveys and system design in and around Southall. That is above the UK middle, mainly because labour and access cost more in London. The design pack price depends mainly on the number of rooms and whether full drawings and equipment schedules are needed. Typical Design pack work (drawings and schedules for one home) lands around £495–£1,045 in this area.
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
In England, most houses can have an outdoor unit under permitted development if it is no larger than 1.5 m³, meets the MCS 020(a) noise limit of 37 dB(A) at the nearest neighbour's window, and there are no more than two on a detached house or one on other houses. Listed buildings need consent.
The survey
On a survey in Southall 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. 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
What a job in Southall covers:
- Pipe and drain routes
- Noise check to the nearest neighbour
- Written proposal with options
- Equipment selection and outdoor unit sizing
- Electrical load for your electrician
Nearby
Nearby, we also cover Greenford (2 miles), Heston (2 miles) and Hayes (2 miles). See all services in Southall or heat load surveys and system design across London.

