Heat pump water heaters do not generate heat directly. They work like a refrigerator – using an electric compressor to move heat from one place to another.
Here is how they work:
1
Heat pump pulls in nearby air.
2
The air warms a cold refrigerant which is then compressed, increasing its temperature.
3
The warm refrigerant heats the water in the storage tank. After the heat transfer, the refrigerant then rapidly expands, dropping its temperature, and the cycle starts again.
4
Smart grid connectivity controls help manage energy use.