Gas range downdraft ventilation

Question from Rhondi: We are remodeling a kitchen, opening a wall up, installing new cabinets, appliances. Looking at putting in a downdraft gas range, is an additional hood vent needed? Is a downdraft enough? 

Jake’s Answer: Rhondi, A properly sized and installed downdraft ventilation system is all you need to exhaust your gas range. An additional hood is not needed.