One of my clients mashine needed servicing and he call me to help him do so since the wife has forgotten how to do it. If you are using kangen mashine for commercial business, e-cleaning is monthly . The mashine also automatic each time you fetch a particular pH and decide to get different water pH. It will clear before switching to a new one. When the filter is old, it will ask you to change it.kangen mashine is easy to use since on its own, it will tell you what to do. It comes with 5 years warranty and 40 years plus life span.