The answer
Is maintenance only about legal compliance?
Maintenance protects reliability and efficiency, while F-gas rules may require leak checks depending on the refrigerant and charge. Do not assume every unit has the same legal interval; identify the exact system and calculate the applicable threshold.
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Separate routine care from legal checks
Filters, coils and condensate drains need attention to prevent poor airflow, water damage and avoidable energy use. The operator should also keep an asset record with model, refrigerant, charge and service history. UK government guidance sets leak-check duties by CO₂-equivalent charge and equipment type, so the rule is not simply 'annual servicing for all'.
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Know who is responsible
The building operator and qualified service company have different responsibilities. Make sure work on refrigerant circuits is carried out by appropriately certified people and that any required leak finding, repair and follow-up is recorded. A service report should identify faults and actions, not just show a visit date.
Where this guidance comes from
Check the original guidance.
These primary sources support the technical or scheme points above. Rules can change; follow the current source before making a commitment.
Apply this to your property
Know what your equipment actually needs.
FLO can review the installed units and their records, then explain the maintenance and refrigerant checks relevant to that system.