Split AC Service & Repair

I need an experienced technician to service and, if necessary, repair several wall-mounted split AC units in my property—there are at least four of them. While I haven’t diagnosed any single issue yet, I want each unit thoroughly inspected, cleaned, and tested for cooling efficiency, refrigerant levels, drainage, and electrical safety. After the visit I would like a brief written report summarising what was done on every unit and highlighting any parts that may need replacement in the near future. Please bring the standard tools and gauges you typically use for split systems; I can arrange easy access to all indoor and outdoor components. Let me know the earliest date you can come and how long you expect the job to take so I can plan accordingly.