What is the difference in a home oven and a commercial oven?

The first difference would be that private kitchens are found in homes and commercial kitchens provide food for the public. There are health codes that must be followed in commercial kitchens! Commercial kitchens produce vast amounts of food, and private kitchens provide meals for families. Family cooks can vary their recipes, but a commercial kitchen produces a recipe that is recognizable as coming from that place. Commercial kitchens strive for consistency in their product so that each time you eat there you get the same dish as you had before.