Heat load surveys and system design in Farnworth
Damp North West weather makes the dehumidifying mode of a modern split system genuinely useful for much of the year. Every Farnworth quote starts with a room-by-room survey rather than a guess from floor area.
For self-builds and extensions in Farnworth, a standalone design pack can go straight to your builder. We cover Farnworth as part of Greater Manchester, roughly 8 miles from Manchester. Coverage includes BL4.
Prices in Farnworth
Guide prices around Farnworth run from £375 to £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. As an example, the Design pack option (drawings and schedules for one home) would typically be £375–£745 here.
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. On a survey in Farnworth 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.
What is included
Here is what is included on every job in Farnworth:
- Room-by-room heat gain and heat loss
- Equipment selection and outdoor unit sizing
- Pipe and drain routes
- Electrical load for your electrician
- Noise check to the nearest neighbour
Nearby
Neighbouring places we cover include Walkden (2 miles), Bolton (3 miles) and Radcliffe (3 miles). See all services in Farnworth or heat load surveys and system design across Greater Manchester.