An A.C. unit can be quite useful during summer when it is very hot. It can cool quickly and efficiently the air in your house, so that you and your family can relax and feel ultra comfortable, at all times. What happens with your skin? Is the A.C. bad for your skin? Lots of people wonder this due to the fact that the air the A.C makes is very cold. The truth is that an A.C. Unit can be quite dangerous from many points of view if you do not maintain it and use it properly.