The Energy Star-rated NRC98, the newest addition to the Noritz ecoTOUGH Series of gas-fired residential condensing tankless water heaters, has an Energy Factor of 0.93. With a maximum flow rate of 9.8 gallons per minute and tempera-ture settings from 100° F to 140° F, the new NRC98 protects the environment by heating water strictly on demand. It promises lower emissions, reduced electrical consumption, smaller amounts of potentially hazardous construction materials, and easier recyclability of those materials and components once the product is removed from service.Eco-friendly tankless water heater