... the geothermal before we start to explain what the geothermal heat pump is. To give a brief definition, geothermal ... By using CSRS heat pump, you can reduce your heating costs up to 75%. The coefficient of performance ( ... hot water into one unit. In summer, you can have the hot water free of charge with ... , temperature, and the alarming system will help you to operate the unit well and keep the unit in ...