Hot air does the cooking; oil is an optional ingredient
An air fryer does not need a reservoir of oil. Philips US support says its listed models can cook without added oil and directs users never to pour oil into the pan. It also says a light amount of oil applied to fresh ingredients can change browning and taste. That is an ingredient choice, not a fixed quantity every model or food requires.
Pre-fried packaged foods may already contain oil; Philips says extra oil is unnecessary for examples such as frozen fries and nuggets in its listed models. Check the food package and your chosen recipe before adding more. Excess oil may collect in the pan and make cleanup harder.
Brush or spray the food only where permitted
Philips describes lightly brushing or spraying one layer onto the food for its listed models. It also describes tossing fresh cut potatoes with oil in a bowl before placing them in the basket. These are ways to distribute oil on food; they are not instructions to spray the heating element, electrical body or a pan full of oil.
The source says “oil spray” but does not establish a universal rule for every pressurized aerosol, propellant or coating. Read the spray label and exact appliance manual for ingredient and surface restrictions. We do not claim that one spray type is harmless to all coatings or that another always destroys them without model-specific evidence.
Oil choice and temperatures still matter
Use oil suited to the cooking temperature and follow the manufacturer’s directions. Philips cautions against cold-pressed oil for its listed Airfryer models because it can burn at high heat. USDA’s separate deep-frying guidance discusses oil smoke points for an oil bath; its frying-oil quantities and immersion procedure should not be copied into an air fryer.
For fatty foods, rendered fat may collect below the cooking surface. The Breville BOV900 manual directs users of its Air Fry function to use a roasting pan rather than the mesh basket for fatty foods to prevent dripping, and to discard excess oil between batches. That instruction belongs to its exact oven layout.
A practical first check
Start with a small familiar meal and the food-package or model directions. Decide whether it actually needs added oil. If adding it, measure what goes on the food, follow the exact model’s permitted method, and observe the result. Do not treat the amount as a health score. For coatings, cleaning and replacement decisions, use the component-level materials guide and the model manual rather than a generic spray recommendation.
Guide authored and sources checked 2026-09-15. No hands-on testing claimed.