Heat load surveys and system design in Heswall
Damp North West weather makes the dehumidifying mode of a modern split system genuinely useful for much of the year. For self-builds and extensions in Heswall, a standalone design pack can go straight to your builder.
No two rooms in Heswall gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing. Heswall sits around 8 miles from Liverpool, inside our Merseyside area. That includes the CH60 postcode district.
Prices in Heswall
In North West England, our guide range for heat load surveys and system design is £375–£1,195 for a standalone design pack, including VAT. It is a touch below the UK middle, as trade rates in North West England tend to be. The design pack price depends mainly on the number of rooms and whether full drawings and equipment schedules are needed. On our North West England figures, the Design pack option (drawings and schedules for one home) is about £375–£745.
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 Heswall at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. A survey in Heswall 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
Every job in Heswall includes:
- Pipe and drain routes
- Written proposal with options
- Electrical load for your electrician
- Room-by-room heat gain and heat loss
- Equipment selection and outdoor unit sizing
Nearby
We also cover Bebington (4 miles), Birkenhead (6 miles) and Wallasey (7 miles). See all services in Heswall or heat load surveys and system design across Merseyside.