Yes the iStore has two sacrificial anodes, one for whole of life and the other is the service anode. The service anode standard change schedule is 5 years for typical Australian capital city town water. Regional Australia can have harsh water and as such more frequent checks and possible replacements can be recommended by local service agents. If the Total Dissolved Solids is greater than 600PPM, the anode shall be inspected every year and replaced at intervals not greater than every 2 yrs.
