The advanced EcoSpring Hot Water Heat Pump allows you to control your hot water requirements with an easy-to-use control panel. This hot water cylinder features three modes; economy mode which is the most efficient model possible, thus allowing the greatest savings. Hybrid mode allows for the standard electric elements will activate if the ambient air temperature is low, the e-Heater mode shuts off the heat pump and only uses the electric elements to heat the water, just like a standard electric water heater.