Air conditioning system, in particular for a motor vehicle; said system having: - a fan configured for generating an air flow in a predetermined direction; - a heat exchanger assembly configured for being crossed by the air flow generated by said fan and for exchanging heat with said air flow in a controlled manner; and - an air outlet located downstream of said heat exchanger assembly and configured for delivering said air flow; said heat exchanger assembly comprising an evaporator configured for cooling said air flow and comprising a back surface or side facing towards said air outlet and configured for being crossed by said cooled air flow; said system further comprising a droplet separator located downstream of and in proximity to said back surface or side of said evaporator; said droplet separator being configured for deviating droplets of water vapour condensed on said back surface or side and taken from said air flow, so as to prevent the downflow of said droplets of water vapour towards said air outlet; said droplet separator comprising a plurality of shaped fins arranged side by side; characterized in that said droplet separator is separated from said back side of said evaporator; in that said droplet separator further comprises a holder that supports said shaped fins, delimiting and supporting laterally the longitudinal ends of said shaped fins; and in that said holder defines a perimetric frame of said droplet separator, surrounding said shaped fins. - a fan configured for generating an air flow in a predetermined direction; - a heat exchanger assembly configured for being crossed by the air flow generated by said fan and for exchanging heat with said air flow in a controlled manner; and - an air outlet located downstream of said heat exchanger assembly and configured for delivering said air flow; said heat exchanger assembly comprising an evaporator configured for cooling said air flow and comprising a back surface or side facing towards said air outlet and configured for being crossed by said cooled air flow; said system further comprising a droplet separator located downstream of and in proximity to said back surface or side of said evaporator; said droplet separator being configured for deviating droplets of water vapour condensed on said back surface or side and taken from said air flow, so as to prevent the downflow of said droplets of water vapour towards said air outlet; said droplet separator comprising a plurality of shaped fins arranged side by side; characterized in that said droplet separator is separated from said back side of said evaporator; in that said droplet separator further comprises a holder that supports said shaped fins, delimiting and supporting laterally the longitudinal ends of said shaped fins; and in that said holder defines a perimetric frame of said droplet separator, surrounding said shaped fins. said heat exchanger assembly comprising an evaporator configured for cooling said air flow and comprising a back surface or side facing towards said air outlet and configured for being crossed by said cooled air flow; said system further comprising a droplet separator located downstream of and in proximity to said back surface or side of said evaporator; said droplet separator being configured for deviating droplets of water vapour condensed on said back surface or side and taken from said air flow, so as to prevent the downflow of said droplets of water vapour towards said air outlet; said droplet separator comprising a plurality of shaped fins arranged side by side; characterized in that said droplet separator is separated from said back side of said evaporator; in that said droplet separator further comprises a holder that supports said shaped fins, delimiting and supporting laterally the longitudinal ends of said shaped fins; and in that said holder defines a perimetric frame of said droplet separator, surrounding said shaped fins.