Onsen 14L Indoor Propane Tankless Water Heater (3.7 GPM, 97K BTU, w/ 3” Wall Vent Kit)

The Onsen 14L Indoor Gas Tankless Water Heater delivers instant, endless hot water for your home or cabin. Compact yet powerful, it’s designed to turn cold water into comfort with propane efficiency. Electronic ignition powered by a standard 120V outlet—activated by water flow and pressure Direct vent system draws air from outside, preserving indoor warmth and enabling installation in tighter spaces like closets Smart temperature control monitors and adjusts the burner for a consistent hot water supply LED display & control panel let you view settings and select your perfect water temperature Energy-efficient design—requires less than 1 amp, making it ideal for off-grid solar setups Perfect for a 1-bath apartment, tiny home, cabin, or cottage, this CSA-certified tankless water heater is built for indoor use across the USA and Canada. ⚠ Intake piping not included. ⚠ Not suitable for hydronic, closed-loop, recirculating, or floor heating systems. Need a Water Pump?