A climate-control system comprising: a first compressor having a first inlet and a first outlet; a second compressor in fluid communication with the first compressor and having second and third inlets (61, 62), a second compression mechanism and a second outlet, the second and third inlets (61, 62) fluidly coupled to the second compression mechanism, the second compression mechanism configured to receive working fluid from the first compressor through the third inlet and is configured to discharge working fluid through the second outlet of the second compressor, wherein a first heat exchanger is in fluid communication with the second compressor and is configured to receive working fluid from the second compressor, wherein a second heat exchanger is in fluid communication with the first heat exchanger and includes a fourth inlet and third and fourth outlets (186, 184), the fourth inlet receives working fluid from the first heat exchanger, the third outlet provides working fluid to the first inlet, wherein a first expansion device is disposed between the first heat exchanger and the second heat exchanger, wherein the fourth outlet of the second heat exchanger provides working fluid to the second inlet of the second compressor, and wherein the climate-control system further comprises a third heat exchanger characterized in that the third heat exchanger is disposed between the first and second compressors (12, 14) and including a fifth inlet a fifth outlet providing working fluid to the second inlet of the second compressor, and a sixth outlet providing working fluid to the third inlet of the second compressor. a first compressor having a first inlet and a first outlet; a second compressor in fluid communication with the first compressor and having second and third inlets (61, 62), a second compression mechanism and a second outlet, the second and third inlets (61, 62) fluidly coupled to the second compression mechanism, the second compression mechanism configured to receive working fluid from the first compressor through the third inlet and is configured to discharge working fluid through the second outlet of the second compressor, wherein a first heat exchanger is in fluid communication with the second compressor and is configured to receive working fluid from the second compressor, wherein a second heat exchanger is in fluid communication with the first heat exchanger and includes a fourth inlet and third and fourth outlets (186, 184), the fourth inlet receives working fluid from the first heat exchanger, the third outlet provides working fluid to the first inlet, wherein a first expansion device is disposed between the first heat exchanger and the second heat exchanger, wherein the fourth outlet of the second heat exchanger provides working fluid to the second inlet of the second compressor, and wherein the climate-control system further comprises a third heat exchanger characterized in that the third heat exchanger is disposed between the first and second compressors (12, 14) and including a fifth inlet a fifth outlet providing working fluid to the second inlet of the second compressor, and a sixth outlet providing working fluid to the third inlet of the second compressor.