Heating and / or air conditioning with ventilation

The invention relates to a heating and / or air conditioning (1) for vehicles, primarily cars. The heating and / or air conditioning (1) has a central air-conditioning and air-conveying device (2) for conditioning and / or conveying air. DOLLAR A In order to achieve effective energy as possible an optimum air-conditioning of the vehicle interior (8) and a sufficient anti-fogging of the panes, the air is introduced within the vehicle interior so that, for example. B. outside air and recirculated air in each case by its own air inlet openings (31, 32) is introduced into the vehicle interior and through its own air outlet openings (41, 42) is discharged from the vehicle interior (8). In particular, the air is guided on a closed flow paths so as z. to achieve separation of recirculated air and outside air example.