U8 Government Wader! law prohibits removal of this label before consumer purchase. ENERGY GUIDE Instantaneous Water Heater Natural Gas Extensiveness APING Estimated Yearly Energy Cost $104 The estimated yearly operating cost of this model was not available when the range was published. Cost Range of Similar Models Maximum Gallons Per Minute of Hot Water (GPM Rating) == EY iii te * Your cost will depend on your utility rates and use.