Purchased a new home with this unit plus oven below already I stalled. The only venting goes out into the room. There is no out side venting so all odors are blown into the interior. The last home I had had a microwave with a vent on top and a vent tube that went up through a cabinet to the roof. It sucked out odors from the microwave and stove and oven. The selection panel on the Bosch is great. You barely have to touch it and start it. Also very quiet. Looks great too. I was told by a Bosch rep that these microwave/oven combos don't have outside venting.