A structured way to describe reduced heat-pump performance before asking for professional help.
Short answer
When a heat pump seems less effective than before, the most useful first step is to describe the change clearly: when it began, what the property feels like, whether it affects heating or cooling and whether any messages or noises are present. That information helps determine whether servicing, diagnostics or repair support is appropriate.
Compare with normal operation
Think about the system’s previous behaviour. Has comfort changed in every room, only under particular weather conditions or at particular times? A comparison with normal operation is more useful than a general impression that the system is weaker.
Look for supporting clues
Error codes, altered airflow, new noise or unexpected cycling can add helpful context. Do not assume that a single visible symptom identifies the cause; the aim is to give a complete picture for assessment.
Choose the right kind of visit
An annual service is useful for routine care. If the system has a sustained performance concern, unfamiliar behaviour or a controller message, diagnostics or breakdown support may be the more appropriate starting point.
Can an annual heat pump service help with reduced performance?+
A planned service can review condition and reported concerns. If there is a distinct or persistent fault, diagnostic or repair work may be needed as a separate next step.
Should I request a refrigerant recharge for reduced performance?+
Reduced performance does not by itself establish a refrigerant issue. A professional assessment should consider the cause before any recharge is proposed.