* Energy saving: the temperature condition of the cooling and heating source is better than that of the ambient air, resulting in high operating efficiency;
* Cost saving: the trinity of heating, air conditioning and domestic hot water is integrated, enhancing economy;
* Stable: the water temperature condition is relatively stable, and the fluctuation range is much smaller than the change of air temperature, making the operation reliable and stable;
* Flexible: the unit is optional in various forms, and the decentralized water fan can simultaneously air condition, heat and achieve the effect of four controls;
* Land saving: no machine room required, saving floor space;
* Aesthetic: Compared with air-cooled heat pump, there is no need for outdoor units to ensure the beauty of the building facade ;