Abstract: A loading dock vehicle ventilation system for ventilating vehicles such as semi-trailer or the like docking at conventional loading docks. The ventilation system includes a blower component and an outlet duct in fluid communication with the blower outlet. The outlet duct defines a discharge end positioned adjacent the loading dock door allowing the discharge end to discharge air emanating from the loading dock area into though the loading dock door and into the vehicle. In one embodiment of the invention at least two outlet ducts provided with corresponding outlet valves are connected to a single blower component for selectively ventilating vehicles docked at adjacent docking doors. Air inlet ducts provided with inlet valves are strategically positioned so as to allow for selective intake of air having specific properties.