These Smart Technology electric tank less water heater are configured for climates where incoming water temperature is 67 degree Fahrenheit and above. These models are well suited for heating up to 2 GPM, which is the equivalent of one shower head (with a 1.5 GPM flow) and one sink with a low inlet water temperature of 67 degree Fahrenheit. Save up to 60 percent on your water heating cost with an Eco Smart electric tank less water heaterEco Smart tank less water heaters have standard, reliable, easily serviceable elements and heat exchangers that provide 99.8 percent energy efficiencyDigital temperature control allows you to set your temperature in increments of 1 degreeAll Eco Smart electric tank less water heaters come with an automatically resettable thermostat as opposed to a manually resettable thermostat, the integration of all components and quick connections are designed to promote simplicity for the installPrior to purchase and installation please verify this model is the rights size for your hot water needs and electrical requirementsRefer to the orange more info tab for specification buying location guide, installation and trouble shooting