Consider how many people you usually cook for and the types of meals you prepare. A 4‑qt model like the Chefman Compact or Ninja 4‑qt is ideal for 1‑4 servings, while 6‑qt and 6.5‑qt units accommodate families and larger batches such as wings or fries. Larger baskets also reduce the need to cook in multiple batches, saving time.

The Cosori offers a 6‑qt square basket with premium ceramic coating and a 5‑fan speed system for precise temperature control up to 450°F, focusing on versatility with 9 functions. Ninja’s 6.5‑qt model emphasizes Max Crisp technology, delivering up to 450°F with a 6‑in‑1 cooking suite and a larger capacity for up to 9 lb of wings. Cosori leans toward advanced features, while Ninja prioritizes high‑heat crisping and bigger volume.

Ceramic coatings, like those on the Cosori and bella models, provide a durable, heat‑resistant surface that reduces food sticking and eases cleanup without PFAS or PTFE chemicals. They tend to be more scratch‑resistant than traditional Teflon, extending the appliance’s life. If you value easy maintenance and healthier cooking surfaces, the modest price premium is justified.

The Chefman 2‑qt Mini Air Fryer delivers solid performance with digital controls, shake notifications, and a compact footprint for under $50, making it ideal for singles or couples. For families, the Chefman 4‑qt Compact provides a good balance of capacity, 450°F hi‑fry technology, and a reasonable price point. Both models give reliable results without the higher cost of premium features.

Higher wattage, such as the 1750 W found in the bella 6‑qt, generally means faster heat-up times and more consistent cooking, especially for larger batches. Lower wattage units (around 1300 W) can still perform well for smaller portions but may require longer cooking times. Match wattage to your typical cooking volume to avoid under‑ or over‑cooking.

Presets like air fry, bake, roast, dehydrate, and reheat simplify cooking by eliminating manual temperature and time adjustments. Models such as the Ninja 4‑in‑1 and Chefman 6‑qt include multiple presets that guide beginners to consistent results. If you frequently switch between cooking styles, these presets can save time and reduce guesswork.

Dishwasher‑safe baskets, like those on the Sweetcrispy and Chefman models, make post‑cook cleanup quick and hassle‑free. Non‑stick ceramic interiors reduce the need for soaking or scrubbing. Also, consider models with removable drip trays and easy‑access controls to keep the appliance tidy.

A clear viewing window, featured on the Sweetcrispy 6‑qt, lets you monitor food without opening the lid, preserving temperature and preventing over‑cooking. This is especially helpful for recipes that require precise timing, such as baked goods or dehydrated snacks. While it adds a small price increase, the convenience can improve cooking outcomes.