Support photovoltaic direct drive connection, the heat pump can directly use photovoltaic panels to output DC power for operation. Effectively increasing the proportion of self use of rooftop photovoltaics, reducing dependence on mains electricity, significantly reducing heating costs in the long run, and adapting to a large number of residential buildings in Europe that have already installed photovoltaics. Using natural R290 propane refrigerant with extremely low GWP, it meets the new EU F-Gas control requirements, avoids the risk of high GWP refrigerant elimination, and is suitable for long-term heating solutions in European energy transition. The full DC variable frequency compressor dynamically adjusts the load and maintains high COP under partial load conditions; Having ERP A++energy efficiency certification minimizes heating power consumption and carbon emissions to the greatest extent possible. Can replace gas, oil, and electric boilers; Compatible with existing underfloor heating and radiator systems. Only connected to waterways, no need to lay complex fuel pipelines, and low difficulty in renovating old houses. All core components are integrated into the outdoor unit, with only the waterway connecting to the indoor heating end. Simplify the installation process, shorten the construction period, and reduce the cost of manual installation.