Any fool would want to know how cold water can heat a house in the winter.
Heat pumps are refrigeration devices running backward.
Working pressures and temperatures of water and refrigerant systems inside a heat pump can vary widely, depending on the size of the system and entering air and water temperatures. The numbers used in the following scenario do not apply to all ground-source heat pumps or all installations. Boosting earth's natural heat. Inside the heat pump, a sealed refrigerant system is the heat-exchange medium. During summer, the direction of the refrigerant is reversed, allowing the pump to extract heat from the air.