Includes a built-in recirculation pump， smart-circ intelligent recirculation that learns your water usage patterns to provide hot water according to your schedule， thermal bypass valve included - ideal for homes without a dedicated return line

ENERGY STAR qualified with an energy factor of 0.96/uniform energy factor of 0.93

Professional installation recommended

Save time with hot water whenever and wherever you need it， any size home， even for simultaneous uses at multiple fixtures

Save energy and reduce utility costs by operating only when hot water is needed

Maximum output， minimum space， suitable for installation in non-traditional spaces such as crawl spaces and attics

Multiple venting options available including PVC/CPVC using the Ubbink concentric to twin pipe adaptor allow for an easy installation

Wi-Fi ready， requires control-R module

Residential warranty: limited 15-year on heat exchanger， 5-year on parts， 1-year on labor (register within 90-days and receive an additional 4-years of labor coverage free a $250 value)， commercial warranty: limited 8-year or 12，000-hours， on heat exchanger， 5-year on parts， 1-year on labor (register within 90-days and receive an additional 1-year of labor coverage)

Find your Rinnai: see our product guides， manuals， energy guide， warranty information， videos， and tables to find the right tankless water heater for your home， check our ground water temperature map to see if this heater is optimal for your region