A hydraulic interconnection unit for a thermal energy distribution system of a building connected to a low-temperature thermal energy remote distribution network called "anergy network", the building comprising a high-temperature thermal energy distribution network called "HT network", a building hot-water network and a heat pump , the hydraulic interconnection unit comprising: - a heat exchanger ; - a high-temperature connection circuit passing through the heat exchanger and comprising an inlet and an outlet ; - a low-temperature connection circuit comprising an inlet and an outlet , - a heating connection circuit comprising an inlet and an outlet , and - a heat pump connection circuit comprising an evaporator circuit with an inlet and an outlet and a condenser circuit with an inlet and an outlet , the inlet of the heating connection circuit being connected to the outlet of the condenser circuit of the heat pump connection circuit , the inlet of the evaporator circuit being connected to the outlet the low-temperature connection circuit ; the hydraulic interconnection unit further comprising: - a first mixing valve (V1) interconnecting the inlet of the low-temperature connection circuit to the inlet of the high-temperature connection circuit and to the outlet of the evaporator circuit so as to be able to inject heat transfer fluid coming from the low-temperature connection circuit into the high-temperature connection circuit , and - a second mixing valve (V2) interconnecting the inlet of the heating connection circuit , via a bypass passing through the heat exchanger , and the inlet of the condenser circuit , to the outlet of the heating connection circuit in order to be able to inject heat transfer fluid passing through the heat exchanger with the heat transfer fluid returning from the condenser circuit . - a heat exchanger ; - a high-temperature connection circuit passing through the heat exchanger and comprising an inlet and an outlet ; - a low-temperature connection circuit comprising an inlet and an outlet , - a heating connection circuit comprising an inlet and an outlet , and - a heat pump connection circuit comprising an evaporator circuit with an inlet and an outlet and a condenser circuit with an inlet and an outlet , the inlet of the heating connection circuit being connected to the outlet of the condenser circuit of the heat pump connection circuit , the inlet of the evaporator circuit being connected to the outlet the low-temperature connection circuit ; - a first mixing valve (V1) interconnecting the inlet of the low-temperature connection circuit to the inlet of the high-temperature connection circuit and to the outlet of the evaporator circuit so as to be able to inject heat transfer fluid coming from the low-temperature connection circuit into the high-temperature connection circuit , and - a second mixing valve (V2) interconnecting the inlet of the heating connection circuit , via a bypass passing through the heat exchanger , and the inlet of the condenser circuit , to the outlet of the heating connection circuit in order to be able to inject heat transfer fluid passing through the heat exchanger with the heat transfer fluid returning from the condenser circuit . <EOS>