Though air fryers and convection ovens both include a fan to blow the hot air around, an air fryer circulates the air much faster inside a smaller chamber. This speeds up the cooking process, so your meals are cooked much faster. They also use a basket for more even circulation around the bottom of the foods being cooked. Air fryers also cook smaller batches, so if you’re only cooking for one or two people, it may be a good option rather than turning on a large convection oven.