A climate control system comprising: a compressor ; a first heat exchanger in fluid communication with said compressor; a second heat exchanger in fluid communication with said compressor and said first heat exchanger; a third heat exchanger disposed between said first heat exchanger and said second heat exchanger, said third heat exchanger including a first inlet, a second inlet, a first outlet and a second outlet; a conduit fluidly coupled to said third heat exchanger and said compressor and operable to selectively supply fluid to said compressor; a valve operable to control a volume of fluid supplied to said compressor via said conduit, wherein said valve is disposed between said first outlet and said second inlet such that said valve is arranged to receive working fluid from said first outlet and provide working fluid to said second inlet; a controller operable to control said valve; a first temperature sensor sensing a first temperature of working fluid downstream of said first outlet and upstream of said second inlet; a second temperature sensor sensing a second temperature of working fluid downstream of said second outlet such that said second temperature is sensed after said working fluid has flowed through said first and second inlets and said first and second outlets, and characterized in that : said first temperature sensor is disposed between said valve and said second inlet; and said controller is operable to control said valve based on a discharge temperature of said compressor and a difference between said first and second temperatures. a compressor ; a first heat exchanger in fluid communication with said compressor; a second heat exchanger in fluid communication with said compressor and said first heat exchanger; a third heat exchanger disposed between said first heat exchanger and said second heat exchanger, said third heat exchanger including a first inlet, a second inlet, a first outlet and a second outlet; a conduit fluidly coupled to said third heat exchanger and said compressor and operable to selectively supply fluid to said compressor; a valve operable to control a volume of fluid supplied to said compressor via said conduit, wherein said valve is disposed between said first outlet and said second inlet such that said valve is arranged to receive working fluid from said first outlet and provide working fluid to said second inlet; a controller operable to control said valve; a first temperature sensor sensing a first temperature of working fluid downstream of said first outlet and upstream of said second inlet; a second temperature sensor sensing a second temperature of working fluid downstream of said second outlet such that said second temperature is sensed after said working fluid has flowed through said first and second inlets and said first and second outlets, and characterized in that : said first temperature sensor is disposed between said valve and said second inlet; and said controller is operable to control said valve based on a discharge temperature of said compressor and a difference between said first and second temperatures. said first temperature sensor is disposed between said valve and said second inlet; and said controller is operable to control said valve based on a discharge temperature of said compressor and a difference between said first and second temperatures. <EOS>