Rinnai I-SERIES Plus Wall-Hung Condensing Gas Boiler is a NEW I-SERIES Plus line of solo and combi condensing gas boilers that offers unmatched value and performance with an expanded product line that features Smart Sense adaptive gas valve technology. Now with the touch of a button on a unit controller or smartphone, fuel type can be selected — conversion kits are no longer required. It includes a Bluetooth-enabled setup on the Rinnai Central App for parameter settings and speedy unit configuration. Rinnai's proportional valve allows simultaneous delivery of heat and domestic hot water for maximum comfort. The I-SERIES has excellent efficiency and flexible install.