The substation for heat source comprising an absorption machine and a heat exchanger, a first supply inlet of the absorption machine being intended to be in fluid connection with a feed line of the heat source, an evacuation outlet of the heat exchanger being intended to be in fluid connection with a return line of the heat source, a first evacuation outlet of the absorption machine being in fluid connection with a supply inlet of the heat exchanger, a second evacuation outlet of the absorption machine being intended to be in fluid connection with a feed line of a heating and cooling distribution circuit, and a second supply inlet of the absorption machine being in fluid connection with a return line of the heating and cooling distribution circuit, and wherein the heat exchanger is intended to be thermally coupled with a domestic hot water distribution circuit, the absorption machine comprising a generator, an absorber, an evaporator, a condenser and a solution pump, characterised in that the substation further comprises at least one fluidic switch called "spring-winter" fluidic switch, arranged to switch the substation between: - a configuration of producing heat on the domestic hot water distribution circuit and cold on the heating and cooling distribution circuit, wherein the second evacuation outlet of the absorption machine is an evacuation outlet of the evaporator of the absorption machine and the second supply inlet of the absorption machine is a supply inlet of the evaporator of the absorption machine and wherein the absorption machine is intended to be thermally coupled with a cooling circuit, and - a configuration of producing heat on the domestic hot water distribution circuit and heating on the heating and cooling distribution circuit, wherein the second evacuation outlet of the absorption machine is an evacuation outlet of the condenser of the absorption machine and the second supply inlet of the absorption machine is a supply inlet of the absorber of the absorption machine and wherein the absorption machine is intended to be thermally coupled with a cold source circuit. a first supply inlet of the absorption machine being intended to be in fluid connection with a feed line of the heat source, an evacuation outlet of the heat exchanger being intended to be in fluid connection with a return line of the heat source, a first evacuation outlet of the absorption machine being in fluid connection with a supply inlet of the heat exchanger, a second evacuation outlet of the absorption machine being intended to be in fluid connection with a feed line of a heating and cooling distribution circuit, and a second supply inlet of the absorption machine being in fluid connection with a return line of the heating and cooling distribution circuit, and wherein the heat exchanger is intended to be thermally coupled with a domestic hot water distribution circuit, the absorption machine comprising a generator, an absorber, an evaporator, a condenser and a solution pump, characterised in that the substation further comprises at least one fluidic switch called "spring-winter" fluidic switch, arranged to switch the substation between: - a configuration of producing heat on the domestic hot water distribution circuit and cold on the heating and cooling distribution circuit, wherein the second evacuation outlet of the absorption machine is an evacuation outlet of the evaporator of the absorption machine and the second supply inlet of the absorption machine is a supply inlet of the evaporator of the absorption machine and wherein the absorption machine is intended to be thermally coupled with a cooling circuit, and - a configuration of producing heat on the domestic hot water distribution circuit and heating on the heating and cooling distribution circuit, wherein the second evacuation outlet of the absorption machine is an evacuation outlet of the condenser of the absorption machine and the second supply inlet of the absorption machine is a supply inlet of the absorber of the absorption machine and wherein the absorption machine is intended to be thermally coupled with a cold source circuit. - a configuration of producing heat on the domestic hot water distribution circuit and cold on the heating and cooling distribution circuit, wherein the second evacuation outlet of the absorption machine is an evacuation outlet of the evaporator of the absorption machine and the second supply inlet of the absorption machine is a supply inlet of the evaporator of the absorption machine and wherein the absorption machine is intended to be thermally coupled with a cooling circuit, and - a configuration of producing heat on the domestic hot water distribution circuit and heating on the heating and cooling distribution circuit, wherein the second evacuation outlet of the absorption machine is an evacuation outlet of the condenser of the absorption machine and the second supply inlet of the absorption machine is a supply inlet of the absorber of the absorption machine and wherein the absorption machine is intended to be thermally coupled with a cold source circuit.