A Heat Pumps water heater relies on compressor to function. The compressor absorbs the heat from the air and transfers it to the storage tank which enables the water to be heated.
A heat pump water heater does not create heat but instead uses electricity to absorbs heat from the air to transfer it to the water. As it relies on this mechanism it makes it 2-3 times more energy efficient than traditional water heaters.
This is also allowing you to save up to 70% on electricity. What’s even more interesting is that the heat pumps water geysers have a tank capacity that is similar to traditional storage geysers so there is no compromise on the amount of hot water.