Enjoy hot water on demand, anytime The Onsen 14L Indoor Gas Tankless Water Heater turns cold water into instant hot water when you want it. Fueled by propane, the 14L has an electronic ignition powered by a 120v electrical outlet and activated by water pressure & flow. It also features a direct vent system that pulls air from the outside to burn gas, preventing the loss of warm indoor air and allowing for installation in restricted spaces such as a closet. The 14L is designed with a control system that monitors the water temperature and adjusts the burner to deliver a stable supply of hot water, while the LED display and control panel allow you to view current settings and select outgoing temperatures. Requiring less than 1 amp, the 14L is ideally suited for remote locations equipped with an off-grid solar system. Compact and energy-efficient, the Onsen 14L is your hot water solution for a 1-bath apartment, tiny home, cabin, or cottage. AIR INTAKE PIPING NOT INCLUDED Indoor use only CSA Certified for the USA and Canada Activated by a minimum of 15 PSI and 0.67-gal/min flow rate Electronic ignition (no pilot light and no wasted gas) Includes Z-Vent 3" wall vent kit for exhaust: Termination Hood, 90° Elbow, Wall Thimble, 12" Straight Pipe, 18" Straight Pipe, & Appliance Adapter w/ Backflow Preventer Air intake compatible with PVC, galvanized steel and aluminum piping Onsen 14L 3.7-gal./min 97,000-BTU Indoor Liquid Propane Tankless Water Heater w/ 3-in Wall Vent Kit