Skip to main content
Heat loss guide

Heat loss formula guide: inputs before equations

Formula debates are secondary when survey inputs are weak. Strong evidence reduces rework and protects install schedules.

15,000+ surveys completed across the UK · Pack and organised photos available in the portal immediately on completion of the visit · EPC by next morning in the standard flow.

Get pricing See a sample pack
Guide

Input quality standards that matter most

What strong looks like

Capture standards

  • Room-by-room dimensions and construction context
  • Evidence-backed assumptions instead of defaults
  • Explicit recording of unknowns requiring follow-up
  • Structured outputs usable by office and design teams
Where time is lost

Where teams lose time

  • Inputs too weak to support defensible outputs
  • Unclear assumptions hidden inside spreadsheets
  • Rework after teams discover gaps in the pack
Why it helps

Why teams use Vertex

  • Clearer packs for office and design review
  • Faster quoting with less chasing
  • Install teams start with clearer site context
  • Portal visibility across teams and roles
Useful next pages

Related pages and proof

Heat loss serviceHeat loss calculations guideDeliverablesGet pricing