* Environmental protection: using lake water as the cooling and heating source for energy conversion, reducing the emission of CO2 and other atmospheric pollutants, avoiding cooling tower noise and mould pollution;
* Energy saving: cooling and heating source temperature conditions are better than ambient air, with high operating efficiency;
* Capital saving: integrating heating, air conditioning and domestic hot water, enhancing economy;
* Stable: relatively stable water temperature conditions, with a much smaller fluctuation range than air temperature variations, which makes operation reliable and stable;
* Flexible: the unit is optional in various forms, and the decentralized water fan can be used for air conditioning, heating and four controls at the same time;
* Aesthetic: compared with air-cooled heat pumps, there is no need for an outdoor unit, which ensures the aesthetics of the building facade;