Heat load surveys and system design in Walton-on-Thames
Summers in the South East are among the warmest in the country, so cooling often comes first, with efficient winter heating as a bonus. No two rooms in Walton-on-Thames gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing.
Every Walton-on-Thames quote starts with a room-by-room survey rather than a guess from floor area. Our Surrey coverage takes in Walton-on-Thames, about 8 miles from Woking. Homes in KT12 are all within our coverage.
Prices in Walton-on-Thames
Guide prices around Walton-on-Thames run from £495 to £1,495 for a standalone design pack including VAT. South East England 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. Typical Design pack work (drawings and schedules for one home) lands around £495–£945 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
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. We book surveys in Walton-on-Thames at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
What a job in Walton-on-Thames covers:
- Written proposal with options
- Pipe and drain routes
- Equipment selection and outdoor unit sizing
- Noise check to the nearest neighbour
- Room-by-room heat gain and heat loss
Nearby
Close to Walton-on-Thames, our coverage also includes Sunbury-on-Thames (1 mile), Esher (2 miles) and Hanworth (3 miles). See all services in Walton-on-Thames or heat load surveys and system design across Surrey.