Why does My Air Blow warm Air in the front and rear vents? on 2007 Chrysler Pacifica

My A/C compressor kicked in after the first time my mechanic friend used the refrigerant. Less than 2 weeks later he added another can of refrigerant. Is there a possible leak? And FYI hes not at a dealership so thats why I am asking.

Asked by for the 2007 Chrysler Pacifica
yes sounds like a leak to me. did he install a/c leak dye so leak can be found?