Air conditioner for vehicle

An air conditioner for a vehicle, comprising:

• an air conditioning case comprising a rear console vent through which introduced air is discharged toward a rear console, a defrost vent through which air is discharged toward a front window, a face vent through which air is discharged in a direction of a front passenger, and a foot vent through which air is discharged in a foot direction of front and rear seats;
• a door unit comprising a defrost door, a face door, and a foot door that are rotatably disposed in the air conditioning case and adjust a degree of openness of each of the defrost vent, the face vent, and the foot vent;
• and
• a door driving unit that individually drives and controls the defrost door, the face door, and the foot door and establishes an air conditioning mode,
• wherein an inlet of a rear console duct that interacts with the rear console vent is opened in normal times in each air conditioning mode so that air is able to be always discharged.