If you are having a geyser or a water heater in your home, then it will be like any other electrical appliance that needs proper care. For water heaters, there will be a need for Water heater services at least once a year. Source: https://www.fxstat.com/en/user/profile/asihastings-393272/blog/36852018-A-Few-Tips-to-take-Care-of-your-Water-Heater