We recommend that you air fry your meatballs for 12-15 minutes at 350 F (180 C). If your meatballs are on the smaller side, closer to 8-12 minutes is better. If you have larger meatballs, we recommend cooking for closer to 15 minutes. Every meatball and air fryer combo will have a “sweet spot” where it’s perfectly cooked, but it’s most likely within this range.