Confirm what evidence is missing
For heat pump evidence, the weak point is usually not the headline requirement. It is the missing photo, document, measurement, or site note that stops the next person from trusting the job record.
Floor plans aren’t always required, but when they are, they remove ambiguity and make room-by-room context easier to use.
Related: ASHP survey reports · heat loss · view sample report
A good plan turns measurements into something a designer and installer can navigate without a second site visit.
Use this guide as a decision check, not as a generic reading page. The useful question is whether the evidence behind floor plans for heat pump surveys: when they’re needed is strong enough for an installer, designer, or homeowner to move to the next step without another round of avoidable questions.
For heat pump evidence, the weak point is usually not the headline requirement. It is the missing photo, document, measurement, or site note that stops the next person from trusting the job record.
A survey report should show what was seen, what was measured, what could not be accessed, and what still needs a design or installer decision. That keeps assumptions visible instead of hiding them inside a photo set.
The office, design, and install teams should be able to open the same report and understand the evidence path. If the page helps you spot what to ask for before survey day, it has done its job.
For a live project, pair this guidance with the sample report, deliverables, and guide price builder so the job is reviewed against the same standard Vertex uses for survey delivery.
The practical test is whether the page changes what happens next on a real property. If it helps your team ask for the right evidence, avoid a weak assumption, or brief the surveyor more clearly before the visit, it is supporting the job rather than adding another generic resource to the pile.