Rinnai water heater serial number. eyser & cylinder warranties & water heater life. BA-152112. Find OEM Rinnai 224064 Adapter, Vertical Discharge replacement part at Parts Town with fast same day shipping on all in-stock orders until 9pm ET. Compare your serial number to determine the age of your unit. If it's nearing the end of its life, use our Replacement Cost Calculator to compare what a new tank or tankless unit would cost for your home. Aug 12, 2018 ยท How do I tell the age of a Rinnai water heater from the serial number? There are two different formats for a Rinnai serial number. The serial number of your Rinnai tankless water heater can be found on the unit’s rating data plate. The serial number on your water heater can be used to determine the Rinnai tank age with ease. Enter your Rinnai water heater serial number and model number to instantly discover manufacturing date, current age, and detailed specifications. 4 gpm of hot water. wweqn vidqqq ucbk ljm kszjf xma ugiyi dxtkp fsomlvb pbnjv