The heat pump is your best choice for energy saving
What is a heat pump and how does it work ?
Heat pumps are designed to transfer thermal energies from a cooler space to a warmer space using the refrigeration cycle; they can heat water by transferring heat with a compressor. Relative to other energy sources, they consume less power to cycle energies while saving air conditioning. In addition to producing hot water or air for the production line, they can run at just 30% of the operating cost for electric heaters under appropriate conditions while delivering more energy at a more stable temperature and without gas risks.
system and environment
Choose heat pumps as required by the environment and water quality. For example, opt for the anti-corrosion ones in coastal areas due to the high salt and high humidity environment there; big hotels will go for array ones as the latter can meet the stable hot water supply requirements.