Liquid Propane tank and is equipped with an electronic ignition.
This model includes great features like an electronic ignition powered by 2 "D" cell batteries and a manual GAS and Water flow adjustment to give you the exact amount of hot water needed..0 GPM Tankless Water Heater Installation and use of the Eccotemp L10 Portable Tankless Water Heater above 2000 feet may affect overall product efficiency and performance.With the Eccotemp L10 you not only get a quality tankless water heater, but you also get a shower head & hose, gas hose & regulator, free lifetime support, live troubleshooting, scheduled service appointments and a whole team dedicated to helping you enjoy your purchase for years to come.