The Rheem ECO180DVLN3-1 Indoor Natural Gas Tankless Water Heater can provide up to 8.4 GPM at a 35° temperature rise. The 180,000 BTU Natural Gas Tankless Water Heater is designed to supply continuous hot water for up to 2 to 3 bathrooms at the same time. It heats water only when it's needed and has a 0.82 uniform energy factor. This compact heater exceeds the requirements for many utility rebate programs. It comes with a remote digital thermostat that can be installed in almost any convenient area of the house. This heater's direct-vent design requires category III stainless steel venting (purchased separately). This model can be used at elevations up to 9,840 ft. above sea level. Please see the specifications to view the Rheem Brochure Guide which will help you in your buying decision to ensure that you purchase the right tankless water heater model for your household needs.