Support photovoltaic direct drive connection, the heat pump can directly use photovoltaic panels to output DC power for operation. Significantly increase the self use rate of rooftop photovoltaics, reduce dependence on mains electricity, save energy consumption expenses in the long run, and adapt to European households with existing photovoltaic systems. One machine meets three major needs: winter heating, summer cooling, and all-weather domestic hot water. Replace boilers, air conditioners, and multiple water heaters to save installation space and reduce total equipment investment. Using natural R290 propane refrigerant with extremely low GWP, it meets the EU F-Gas control requirements, avoids the risk of high GWP refrigerant elimination, and is a long-term sustainable HVAC solution for the European market. The full DC variable frequency compressor dynamically adjusts the load and maintains efficient operation under partial load conditions; ERP A++energy efficiency certification reduces energy consumption and carbon emissions.