Refrigeration circuit circulating a refrigerant and comprising in the direction of flow of the refrigerant: at least one compressor (4a, 4b, 4c); at least one heat rejecting heat exchanger; at least one expansion device; and at least one evaporator; the refrigeration circuit further comprising: at least one heat recovery heat exchanger having a refrigeration circuit side and heat recovery system side and being configured for transferring heat between the refrigeration circuit side and the heat recovery system side, wherein the refrigeration circuit side is fluidly connected in parallel to the at least one heat rejecting heat exchanger for flowing circulating refrigerant through the refrigeration circuit side; and at least one regulation valve which is configured for regulating the flow of refrigerant flowing through the refrigeration circuit side of the at least one heat recovery heat exchanger; wherein the at least one regulation valve is switchable between an open position, in which the regulation valve is completely open; a closed position, in which the regulation valve is completely closed; and at least one intermediate position, in which the regulation valve is partially open; characterized in that said at least one regulation valve is arranged only downstream of the heat recovery heat exchanger. at least one compressor (4a, 4b, 4c); at least one heat rejecting heat exchanger; at least one expansion device; and at least one evaporator; the refrigeration circuit further comprising: at least one heat recovery heat exchanger having a refrigeration circuit side and heat recovery system side and being configured for transferring heat between the refrigeration circuit side and the heat recovery system side, wherein the refrigeration circuit side is fluidly connected in parallel to the at least one heat rejecting heat exchanger for flowing circulating refrigerant through the refrigeration circuit side; and at least one regulation valve which is configured for regulating the flow of refrigerant flowing through the refrigeration circuit side of the at least one heat recovery heat exchanger; wherein the at least one regulation valve is switchable between an open position, in which the regulation valve is completely open; a closed position, in which the regulation valve is completely closed; and at least one intermediate position, in which the regulation valve is partially open; characterized in that said at least one regulation valve is arranged only downstream of the heat recovery heat exchanger. at least one heat recovery heat exchanger having a refrigeration circuit side and heat recovery system side and being configured for transferring heat between the refrigeration circuit side and the heat recovery system side, wherein the refrigeration circuit side is fluidly connected in parallel to the at least one heat rejecting heat exchanger for flowing circulating refrigerant through the refrigeration circuit side; and at least one regulation valve which is configured for regulating the flow of refrigerant flowing through the refrigeration circuit side of the at least one heat recovery heat exchanger; wherein the at least one regulation valve is switchable between an open position, in which the regulation valve is completely open; a closed position, in which the regulation valve is completely closed; and at least one intermediate position, in which the regulation valve is partially open; an open position, in which the regulation valve is completely open; a closed position, in which the regulation valve is completely closed; and at least one intermediate position, in which the regulation valve is partially open; characterized in that said at least one regulation valve is arranged only downstream of the heat recovery heat exchanger.