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Comparison guide

ASHP vs GSHP

Survey scope differences (UK) — written for installer workflows.

This isn’t a “which is better” sales pitch. It’s a practical checklist of what typically changes in survey scope so you can plan evidence capture and reduce follow‑ups.

ASHP survey packs Request availability

Delivery: pack + organised photos are available in the portal immediately upon completion of the visit. EPC delivered by next morning. delivered the next day if a calculation is needed.

Scope

What typically changes in the survey

Exact requirements depend on scope and installer process — we confirm what you need before booking.

ASHP

Common ASHP focus areas

  • External unit siting constraints (space, routing, access)
  • Internal plant area context
  • Evidence to reduce design assumptions
GSHP

Common GSHP focus areas

  • Ground loop / trench / bore feasibility context
  • Site constraints that impact routing and civils
  • Evidence to support groundworks planning (where in scope)
Both

The constant: clear handoff

  • Photos grouped by decision (not timestamps)
  • Assumptions made explicit
  • Structured pack that reduces callbacks
View sample pack Deliverables Guides hub