Why a gas top-up is not the right assumption when heat-pump performance changes.
Short answer
A heat pump should not be assumed to need a refrigerant recharge simply because performance has changed. The appropriate first step is an assessment of the reported issue and system condition so that the cause can be understood before any refrigerant work is considered.
Start with the symptom, not the proposed fix
Reduced comfort, changed running behaviour or a controller message can have different causes. Describing the symptom accurately helps a professional assess whether refrigerant is relevant rather than treating a recharge as an automatic remedy.
Why cause matters
Professional refrigerant work depends on the system, condition and reason for the concern. An assessment-led approach gives you a clearer explanation of what is being considered and why.
What to include in your enquiry
If known, include the heat pump make and model, the change you have noticed, any messages and whether the issue affects heating, cooling or both. This helps direct the initial conversation.
You can request an assessment for a suspected refrigerant concern. The correct approach is to establish whether refrigerant work is needed and what should be addressed first.
Is refrigerant work part of normal annual servicing?+
Routine service and refrigerant assessment are different activities. The appropriate scope depends on the system and the concern that has been reported.