Plumbing · high safety risk
Arrange annual mini-tank anode inspection
Book the Bosch Tronic 3000T annual anode check and review condition-dependent replacement.
- How often
- Annually for the confirmed ES2.5, ES4 or ES8 manual
- Time
- 15 minutes
- Difficulty
- Professional service
- Editorial status
- Published
Before you begin
How to do it
- Confirm the exact U.S. ES model, manual edition and dates of the last inspection and replacement.
- Arrange qualified access and inspection. The Bosch manual requires annual inspection and replacement before return to service when the rod is corroded, pitted or missing.
- Ask the professional to assess whether recirculation, water quality, galvanic corrosion or high flow require earlier replacement.
- Record the inspection result separately from replacement. An inspection alone does not satisfy the separate maximum two-year replacement requirement.
Stop and get help when
- Leak or water near electrical parts
- Corroded, pitted or missing anode reported by service
- Unknown maintenance history or overdue replacement
Have a qualified water-heater service professional handle anode access, assessment, replacement, water quality and any leak or electrical concern. Stop using unsafe equipment and seek prompt service.
Sources and review
Written by Upkeeping editorial team. Published Upkeeping guidance. Follow your equipment manufacturer’s instructions.