Heat load surveys and system design in Catford
The urban heat island effect means London bedrooms can stay uncomfortably warm on summer nights. Every Catford quote starts with a room-by-room survey rather than a guess from floor area.
No two rooms in Catford gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing. We cover Catford as part of London, roughly 6 miles from central London. We cover SE6 and the streets around them.
Prices in Catford
Our London guide price for heat load surveys and system design is £495–£1,645 for a standalone design pack, VAT included. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. Larger homes, more zones and full drawing sets for a builder are what move a design pack towards the upper figure. For reference, the Design pack option in Catford (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
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
A survey in Catford 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. We book surveys in Catford at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Every job in Catford includes:
- Electrical load for your electrician
- Noise check to the nearest neighbour
- Room-by-room heat gain and heat loss
- Equipment selection and outdoor unit sizing
- Written proposal with options
Nearby
Neighbouring places we cover include Blackheath (2 miles), Greenwich (2 miles) and Beckenham (2 miles). See all services in Catford or heat load surveys and system design across London.

