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 ...

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We found the best tankless water heaters on Amazon (plus one mini-tank water heater), including the best tankless water heater for outdoors, the best propane tankless water heater and the best ...