Find the model and service schedule
Keep the manual, installation date, and model number where you can find them. Check the manufacturer’s service schedule for the exact unit. Ask a technician how your water quality and use affect the schedule.
Look for changes between appointments
A change in recovery, noise, temperature, or flow can help flag an issue early. Note when it occurs and whether it affects the whole house. Keep photos or a brief log so you can describe the change accurately.
Schedule planned work around your household
Choose a time when a short hot water interruption is manageable. Ask what the visit includes and whether the equipment condition warrants work beyond the routine service.
