What Is a Tankless Water Heater? A tankless water heater heats up water on demand instead of storing heated water in a storage tank. Due to its short heating time, tankless water heaters are perfect for cooking areas, additional bathrooms, or any place where water needs to be used at any time. Also, because of its on-demand heating instead of a holding tank, our tankless water heaters are 90% smaller than a traditional water heater. Tankless Benefits Endless, on-demand hot water Provide endless hot water on demand with no preheating or sudden temperature fluctuations. Better Value Than a Tank Water is only heated when you need it, not stored in a hot water tank. The self-modulating temperature technology only uses energy to heat up water while you are using it, which saves up to 50% on water heating costs compared to a typical tank water heater. Save Valuable Space A water heater in the basement or utility closet takes up a ton of space. This wall-mounted water heater uses 90% less space than a traditional hot water heater with a tank. How are “Traditional” Tank Storage Water Heaters Different? Tankless Water Heater Tank Water Heater Size 90% smaller than traditional water heater Need quite a bit of room to install Power Supply 8KW-27KW 1.5K-3KW Performance Water is heated on demand, not stored in a tank Only holds a fixed amount of hot water Energy Use Save 50% on water heating Holds heated water all-day Installation Can be installed anywhere as long as cold and hot water pipes are installed in advance. Needs to be installed on the load-bearing wall. Cleaning & Maintenance Non-scaling, so no special maintenance is required. Must flush tank twice a year to remove sediment and mineral scale. Which Electric Tankless Water Heater Size is Right for You? KW Inlet Temp（°F） GPM Approx Usage Outlet Temperature（°F） 6.5 41 0.7 Low Flow Faucet 104 50 0.8 Low Flow Faucet 59 0.9 Low Flow Faucet