Heat is taken in the ground via a sensor out of sheathed polyethylene copper tube, inside whose the refrigerant circulates. This sensor, in the shape of serpentine, is buried to 60 cm in the ground, on a surface of about 100 to 120% of surface to be heated. The useful heat is transmitted in the house via a hydraulic distribution system: heating floor, network of radiators (maximum temperature of the water of heating: 45°C), or any other solution using hot water like vector of heating. This flexibility in fact, in addition, the ideal solution for the restorations
