Support photovoltaic direct drive access, the heat pump can operate directly on photovoltaic panel DC power. Significantly increase the proportion of rooftop photovoltaic self use, reduce dependence on the public power grid, save long-term hot water electricity expenses, and adapt to European residential areas with a large number of photovoltaic installations. Equipped with natural R290 propane refrigerant, with extremely low GWP, it meets the latest EU F-Gas control requirements, avoids the risk of high GWP refrigerant elimination, and is a long-term hot water equipment suitable for European energy transformation. Optimized heat exchange system with excellent COP performance and ERP A++energy efficiency certification. Compared to traditional electric water heaters, it significantly reduces power consumption, saves household energy expenses, and reduces carbon emissions. Traditional resistance electric water heaters are an ideal upgraded product with stable hot water output throughout the year. It can be used for both new house installation and old water heater renovation, with a small renovation project and lower investment cost. The system structure is adapted to the European climate and can stably produce hot water throughout the four seasons, meeting daily water needs such as showering and kitchen cleaning; Low temperature models can meet the usage conditions in the Nordic region. Equipped with a complete set of protection functions including overheating, overpressure, dry burning prevention, water flow monitoring, and fault self checking, effectively avoiding common faults and ensuring safe operation around the clock. The fan and compressor adopt professional noise reduction structure, with low vibration and quiet operation; Anti corrosion shell, supporting long-term indoor or outdoor placement. The overall structure is compact, saving space; Multiple installation methods are available, suitable for home spaces such as equipment rooms, garages, terraces, etc., making it easy to connect to the existing water system of the residence.