A 25L oven air fryer (also called a 25-liter air fryer oven or convection countertop oven) is a larger-capacity multi-function appliance that combines powerful air frying with full oven features like baking, roasting, toasting, broiling, grilling, dehydrating, and often rotisserie. The 25-liter size suits families of 4–8, fitting a 12-inch pizza, whole chicken, multiple trays, or batch cooking — significantly more spacious than a 15L model