HVAC apparatus for a vehicle

A heating, ventilation, and air conditioning (HVAC) apparatus for a vehicle includes a housing defining an inlet, an outlet, an airflow path between the inlet and the outlet, a heat exchanger disposed along the airflow path for selectively heating and cooling air in the airflow path, a passage between the inlet and the outlet and dividing the airflow path into a first path through the heat exchanger and a second path through the passage bypassing the heat exchanger, and a bypass door selectively covering the passage to control airflow through the first and second paths.