In the case of air conditioned (and heated) warehouses and distribution centers, air curtains are the most effective barrier for keeping that conditioned air inside a facility, reducing on energy costs, while still allowing for the free movement of both trucks and people. In facilities where there is no air conditioning or heating to retain, a Mars Air Curtain will ensure that dust, debris, vehicle fumes and other airborne contaminants do not infiltrate the warehouse or delivery area.