The most energy efficient setting on the Rheem Hybrid Electric Water Heater is Energy Saver mode. It works by extracting warmth from the surrounding air, concentrating the heat and delivering it to the water. This mode provides an industry leading 2.0 energy factor (EF) and a first hour delivery comparable to a standard 50 gallon electric model.

When hot water demands are high, use the Normal setting. In this mode, both the heat pump and electric element will operate as needed. The Normal mode will provide a remarkable 1.5 EF and a first hour delivery in excess of a standard 65 gallon electric model.

A temporary Electric Heat Only setting is available to ensure hot water availability without operating the heat pump. The Rheem Hybrid Electric Water Heater will revert back to Energy Saver operation after two weeks, if not reset by the user.