Rheem RTG is a series of mid-efficiency condensing tank less gas water heaters designed for continuous hot water. Industry leading low flow activation with a minimum flow rate of . 26GPM and minimum activation flow rate of . 40GPM ensures hot water is received even in low demand situations. Ultra Low NOx burner meets SCAQMD rule requirements of safety with low emissions. While our exclusive Guardian Overheat Film Wrap prevents our units from reaching the dangerous temperatures others can. Add in our maintenance notification settings, self-diagnostic system and Eco Net enabled mobile app feature (additional kit available), buying the Rheem RTG tank less water heater makes perfect sense. Included are a digital remote control and 10ft. of thermostat wire. As this unit is for use outdoors no venting is required. Best if used with up to 3 bathrooms; . 82UEF (. 82EF Canada) efficiency.