Air conditioner for vehicle

An air conditioner for a vehicle comprises an air conditioner housing and an air intake formed in the air conditioner housing. An evaporator is disposed downstream of the air intake and an heater core is disposed downstream of the evaporator. Vent and foot outlets are formed in the housing downstream of the evaporator. The air conditioner further includes a first passage defined between the evaporator and the heater core and a guide plate disposed downstream of the heater core for directing hot air heated by passing through the heater core toward cool air not passing through the heater core. The air conditioner further includes means for conducting part of the hot air from the heater core guided by the guide plate to the vent outlet and/or for conducting part of the cool air not passing through the heater core to the foot outlet, and a first distributing mechanism for opening and closing the vent outlet and for selectively directing mixed air composed of the cool air from the evaporator and the hot air from the heater core guided by the guide plate toward the vent outlet and/or the foot outlet.