2-3 people: A Small air fryer between 2 to 3 Quarts (1.9 to 2.8 Liters). 3-4 people: A Family sized air fryer between 4 to 6 Quarts (3.8 to 5.7 Litres). 5-6 people: An Extra-large air fryer between 7 to 8 Quarts (6.6 to 7.6 Litres).