A heat pump water heater operates by utilizing electricity to draw in surrounding air, passing it through the pump. This process causes the air temperature to rise, which is then circulated into the water tank to heat the water.

Essentially, a heat pump water heater functions similarly to an air conditioner but in reverse. Instead of extracting hot air from inside a space and releasing it outdoors, the heat pump pulls in ambient air from the outside and warms it up to heat the water inside.

Compared to traditional electric water heaters, heat pump water heaters are more energy-efficient. This is because they don’t use electricity to generate heat directly, like an electric water heater. Instead, they capture heat from the surrounding air and use electricity only to transfer and circulate that heat into the water, making the process much more efficient.