Keep a record for each heater
Record the model, serial number, service dates, and recurring symptoms. Assign someone to log changes in recovery time, flow, noise, or display codes. Those details give a technician more to work with than a single outage report.
Follow the equipment’s service schedule
Service needs depend on model, water quality, and hours of use. A storage system and a tankless bank may need different inspections. Follow manufacturer instructions and use a qualified technician for work that involves internal parts, gas, or electrical connections.
Plan service around operations
Identify a window when the building can tolerate a water interruption. Confirm access, who can authorize work, and how to notify staff or tenants. Ask whether a recurring problem points to a replacement that you can schedule in advance.
