Guys I need your advice regarding my car's aircon. When I switch my AC on to auto climate it will go in full blast and go cold with no problems. Now when its cold in the car na I tend to put down the power to 1 or 2 then after several minutes I will feel that only air blows out and its not cold. When it happen I will switch back the AC power to 3 or 4 and it will start to blow cold air again. When I did that I sometimes see white smoke/mist from the AC for a short time.

I'm planning to have it serviced soon but I just need your thoughts and opinions.