Cosori air fryers are made with materials that are generally considered safe for cooking, but the answer depends on which part of the unit you're asking about
Cosori air fryer baskets and trays are typically made from stainless steel or non-stick coated metal. The non-stick coating on most Cosori models is a polymer-based finish rather than traditional PTFE (Teflon), which means it doesn't release harmful fumes at normal cooking temperatures. The heating element and internal components are also stainless steel or aluminum, both food-safe metals that don't leach into food during cooking.
The plastic parts—the outer housing, handle, and control panel—are made from heat-resistant polymers designed to withstand the temperatures inside the unit without breaking down. These plastics don't come into contact with food, which is the main safety concern. The real question isn't whether Cosori uses toxic materials, but whether you're using the unit correctly and maintaining it properly.
Key Takeaways
- Cosori air fryer cooking surfaces are stainless steel or non-stick coated metal, neither of which releases harmful substances at normal cooking temperatures.
- The non-stick coating used on most Cosori models is not PTFE-based, so it doesn't produce dangerous fumes even if the coating is scratched.
- Plastic housing and handles are food-safe and don't contact food during cooking, so they pose no contamination risk during normal use.
- Damage to the non-stick coating, overheating beyond the unit's maximum temperature, or using the air fryer with damaged electrical components can create safety problems.
- Regular cleaning and inspection for wear will keep your Cosori air fryer safe to use for years.
What the non-stick coating actually is
Most Cosori air fryer baskets use a ceramic or polymer-based non-stick coating, not PTFE (the chemical in traditional Teflon). This matters because PTFE releases fumes called PTFE-fume syndrome when heated above 500°F, which can cause temporary flu-like symptoms in humans and is dangerous to pet birds. Cosori air fryers operate at a maximum of around 400°F, well below that threshold, and the coating itself is not PTFE.
The coating is designed to prevent food from sticking without requiring oil, which is one reason people use air fryers. It's applied to the basket and tray during manufacturing and should last for hundreds of uses if you don't scratch or damage it. If the coating does chip or peel, the underlying metal is still safe—stainless steel and aluminum don't react with food or release toxins.
How heat affects the materials in your Cosori air fryer
Air fryers work by circulating very hot air around food, and the materials inside your Cosori are engineered to handle this. The basket and tray sit in the hottest part of the unit and are made from metals that don't break down, warp, or release anything into food at the temperatures the unit reaches. Stainless steel is inert—it doesn't react with acidic foods, salt, or moisture. Aluminum is also food-safe when used as a cooking surface, which is why it's used in commercial kitchens and ovens.
The plastic housing stays much cooler because it's insulated from the heating chamber. The exterior can get warm to the touch, but not hot enough to break down the plastic or release chemicals. The handle is designed to stay cool enough to grip safely, though you should still be careful when the unit is running.
What can actually go wrong with a Cosori air fryer
The main safety risk isn't the materials themselves—it's damage or misuse. If you scratch the non-stick coating deeply and then use the air fryer at very high temperatures repeatedly, you could theoretically expose the underlying metal to more wear, though this still won't make the unit toxic. If you use metal utensils to scrape the basket while it's hot, you'll damage the coating faster and may create rough spots that trap food particles.
Overheating is another concern, but Cosori units have a built-in thermostat that prevents the heating element from exceeding the maximum temperature. If the thermostat fails, the unit could overheat, but this would be an electrical malfunction, not a material safety issue. If you notice the unit smells like burning plastic or electrical components, stop using it when ready and contact Cosori support.
Using the air fryer with a damaged power cord, wet hands, or in a wet environment creates electrical hazards, not chemical ones. These are standard kitchen appliance safety rules that explore to any electric cooking device.
How to keep your Cosori air fryer safe over time
Clean the basket and tray after each use with warm soapy water and a soft sponge or cloth. Avoid steel wool, abrasive scrubbers, and metal utensils, which scratch the non-stick coating. If food is stuck, soak the basket in warm water for 10 to 15 minutes before scrubbing gently. Dry the parts completely before putting them back in the unit.
Inspect the basket and tray every few months for deep scratches, peeling coating, or visible damage. If the coating is peeling in large sections, you can still use the air fryer—the exposed metal is safe—but the non-stick benefit is gone. If you want to replace the basket, Cosori sells replacement parts that fit your model.
Store the air fryer in a dry place and check the power cord for cracks or damage before each use. Don't immerse the main unit in water, and don't use it near a sink or in humid environments where water could enter the electrical components.
Comparing Cosori to other air fryer brands
Cosori is one of the larger air fryer manufacturers and publishes material safety information for its products. Most major air fryer brands—when ready Pot, Ninja, Philips, and others—use similar materials: stainless steel or non-stick coated baskets, aluminum heating elements, and heat-resistant plastic housings. The safety profile is essentially the same across brands at this price point.
Some premium models use ceramic-coated baskets instead of polymer non-stick, which some people prefer because ceramic is perceived as more natural. Ceramic coatings are also safe and durable, but they're more expensive and don't necessarily perform better than modern polymer coatings. The choice between brands usually comes down to size, features, and price rather than material safety.
When to call Cosori support
Contact Cosori if you notice a burning smell, visible damage to the heating element, sparks inside the unit, or if the unit stops heating properly. If the non-stick coating is peeling and you're concerned, you can ask Cosori whether they recommend replacing the basket, though using it as-is is safe. If you have questions about a specific model's materials, Cosori's customer service can provide the exact specifications.
Cosori offers a warranty on most air fryers (typically one to two years), which covers defects in materials and workmanship. If a component fails or the non-stick coating deteriorates unusually quickly, the warranty may cover a replacement.
Frequently Asked Questions
Does Cosori use PTFE or Teflon in their air fryers?
Most Cosori models use a ceramic or polymer-based non-stick coating, not PTFE. Even if a model did use PTFE, it would be safe because Cosori air fryers operate at temperatures well below the point where PTFE releases fumes (500°F). Cosori's maximum temperature is around 400°F.
Is it safe to use a Cosori air fryer if the non-stick coating is scratched?
Yes. The underlying stainless steel or aluminum is food-safe and won't leach into your food. You'll lose the non-stick benefit, so food may stick more easily, but the unit is not toxic. If large sections of coating are peeling, you can replace the basket with a Cosori replacement part.
Can plastic parts in a Cosori air fryer release chemicals into food?
No. The plastic housing, handle, and control panel don't contact food during cooking. They're designed to stay cool and are made from heat-resistant polymers that don't break down at normal operating temperatures. Only the basket and tray contact food, and those are metal.
What should I do if my Cosori air fryer smells like burning plastic?
Stop using it when ready. A burning plastic smell usually indicates an electrical problem or overheating component, not normal operation. Unplug the unit and contact Cosori support. Don't use the air fryer again until you've identified the problem.
Is it safe to use cooking spray in a Cosori air fryer?
Yes, but use it sparingly. Cooking spray can build up on the non-stick coating over time and make it less effective. A light mist is fine, but avoid heavy applications. Some people prefer to lightly oil food instead of spraying the basket.