Updated 10 August 2026 · Written by Daniel Wright
No, air fryers do not need oil to work, because they cook by circulating hot air rather than submerging food in fat. That said, a light spray or toss of oil helps some foods, like fresh potatoes and vegetables, brown and crisp better. Naturally fatty foods, such as bacon and chicken thighs, need no added oil at all.
Air fryers work without oil. A light spray helps fresh veg and potatoes crisp, but fatty foods need none.
When Oil Helps
A light coating of oil promotes browning and a crisper texture on foods that are dry or starchy, such as fresh-cut fries, chickpeas and vegetables. Toss them in about a teaspoon of oil or use a quick spray for the best result, without the pool of oil that deep frying needs.
When to Skip It
Foods that already contain fat, like bacon, sausages, chicken with skin and many frozen coated foods, release their own oil as they cook, so adding more is unnecessary and can cause smoking. Avoid aerosol non-stick sprays, which can damage the basket coating; use a refillable oil sprayer instead. See the best air fryers for models with easy-clean baskets.
Frequently Asked Questions
Can you use an air fryer without any oil?
Yes. The circulating hot air cooks and crisps food on its own. Oil is optional and only helps browning on drier foods like fresh potatoes and vegetables.
What oil is best for an air fryer?
A neutral oil with a high smoke point, such as avocado, canola or vegetable oil, works well. Apply it lightly with a brush or refillable sprayer rather than an aerosol can.
