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ASHP guide

Air source heat pump efficiency: what installers can control

Efficiency conversations stay commercial when evidence is clear. Survey quality determines how confidently teams can scope and size.

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.

Guide

Efficiency levers that depend on survey quality

What strong looks like

Capture standards

  • Emitter evidence aligned to room-level demand
  • Envelope and infiltration assumptions supported with photos and notes
  • Flow-temperature risks identified before quoting
  • Constraints flagged early so design choices remain realistic
Where time is lost

Where teams lose time

  • Optimistic assumptions with no traceable evidence
  • Inconsistent pack structure between jobs
  • Late-stage clarifications that force redesign
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