Outdoor Portable Tankless Water Heaters
Choose from our three outdoor portable tankless water heaters: Onsen 5L, Onsen 7L and Onsen 10L.
Need help choosing your Onsen? View the comparison chart.
Which size is right for you?
When choosing your Onsen, the most important factor to consider is the temperature of your incoming water: the colder your incoming water, the more powerful the Onsen you need.