Tankless water heater is designed to supply continuous hot water for up to 4 bathrooms at the same time. It heats water only when it's needed and features a 0.93 uniform energy factor. Water savings setting – upon activation, this setting can save homeowners up to 1,100 gallons of water per year 1 by decreasing the flow of water through the pipes until the temperature reaches the heater’s set temperature. Low flow fixture compatible - Industry-first minimum flow rate of 0.26 GPM and minimum activation flow rate of 0.40 GPM ensures the user will receive hot water even in low demand situations. EZ-LinkTM cable available for higher demand applications to connect two tankless units to operate as one. Hot-start programming helps minimize fluctuation in water temperature, referred to as “cold water sandwich”, during periods of frequent on/off operation.