One of the things I liked about living in Japan 20 years ago was the on-demand water heater that supplied the kitchen sink. Turn it on, and you had instant hot water for doing dishes, cooking ...

Instead of consuming countless single-use plastic bottles or constantly refilling a pitcher filter, an under-sink water ...

Since this under-sink water system does not use an RO membrane, there is no water supply wasted, and the water filtering process will retain healthy minerals. It has a filter life of around 600 ...

One reviewer bought this water heater for her kitchen sinks five years ago and says her “water bill dropped by at least 20 percent immediately because of using a tankless.” ...