Do Downdraft Vents Need To Be Vented?

Do Downdraft Vents Need To Be Vented? Downdraft ranges have built-in vents between the burners, and suck smoke and steam through an exhaust pipe or filtration system. That means they don’t need an external vent hood—a trait that makes them popular in open kitchens, and kitchens with cathedral ceilings. How do you attach a downdraft