Rheem’s heat-pump hot water tank draws heat from the air
around it to deliver unmatched savings and works like a
standard electric water heater when the air is too cold.
Either way, you get to enjoy hot water worry-free.
The tank is so efficient, it uses less energy to operate than
a classic 100-watt incandescent light bulb. On an annual
basis, it cuts energy required for hot water by 75 percent.
Details: Rheem ProTerra Hybrid Electric Water Heater.