Ground source heat pump systems use geothermal energy to heat/cool buildings and provide hot water efficiently and eco-friendly. The system maintains high efficiency by utilizing heat from the ground throughout the year. The heat pump's coefficient of performance (COP) ranges from 3.80 to 4.80, with the system's COP at 3.10 and SPF at 3.37. Decreasing the entering water temperature by 15% led to a 24% decrease in heating capacity. Optimal design of the ground heat exchanger is crucial for effective home heating with floor heating systems.