Heat load surveys and system design in Hounslow
For self-builds and extensions in Hounslow, a standalone design pack can go straight to your builder. Many London homes are flats or tall terraces, where heat rises to the top floor and the bedrooms bear the brunt of a hot spell.
Every Hounslow quote starts with a room-by-room survey rather than a guess from floor area. Hounslow lies roughly 10 miles from central London, and we cover it as part of London. We cover TW3, TW4 and TW6 and the streets around them.
Prices in Hounslow
Guide prices around Hounslow run from £495 to £1,645 for a standalone design pack including VAT. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. The design pack price depends mainly on the number of rooms and whether full drawings and equipment schedules are needed. For reference, the Design pack option in Hounslow (drawings and schedules for one home) usually comes to about £495–£1,045.
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
For most houses in Hounslow, 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
Surveys in Hounslow cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. A survey in Hounslow usually takes one to two hours. We measure the rooms, check the walls and the consumer unit, agree the outdoor unit position with you and photograph the pipe routes.
What is included
Included with heat load surveys and system design in Hounslow:
- Pipe and drain routes
- Equipment selection and outdoor unit sizing
- Written proposal with options
- Room-by-room heat gain and heat loss
- Electrical load for your electrician
Nearby
Nearby, we also cover Isleworth (under a mile), Heston (1 mile) and Richmond (2 miles). See all services in Hounslow or heat load surveys and system design across London.

