Heat pump for heating domestic hot water (DHW) is an energy-efficient appliance. It uses heat from the environment, usually from the air, to heat water in a building. It works on the principle of a thermodynamic cycle. It takes energy from a lower source (e.g. the outside air), converts it with a compressor and transfers it to the water storage tank. Although it needs electricity to operate, it uses much less than traditional electric water heaters. This is because most of the energy comes from a renewable source (i.e. usually the outside air).
The air-source heat pump for water heating is a popular solution in detached houses. It works particularly well where ecology and lower energy bills while more economical and acceptable heat sources cannot be connected. The unit operates year-round, often working in conjunction with photovoltaics or other renewable energy sources.
