Cosori Premium II Plus 6.5-Quart Air Fryer
Skip without manufacturer documentation on non-stick coating chemistry.
Cosori doesn't disclose what non-stick coating covers the cooking basket on this Premium model. Most non-stick air fryer coatings historically used Teflon-type coating or Teflon-family coating, but Cosori offers no clarity or certification.
The safe swap
LIL' ORBITS
Commercial Fryer, Lil' Orbits Semi-Automatic Model 800 Bakery Wholesalers
75/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Stainless steel body; non-stick coated cooking basket (coating unspecified)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Non-stick, chemistry undisclosed
Advertised as non-stick but coating type is not explained.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
Category baseline
cookware is a category where PFAS exposure is more common.
Non-stick coating degradation and microparticle release
The unspecified non-stick coating on the cooking basket may shed microparticles over time, especially if scratched or exposed to high heat. Inhaling or ingesting these particles is a documented concern in air-fryer use, but frequency and severity depend entirely on the coating material, which Cosori does not disclose.
Thermal fume release from non-stick coating
If the coating is Teflon-type coating-based (common in non-stick cookware), overheating beyond manufacturer limits can trigger release of fluorinated gases and particulates (polymer fume fever). Cosori does not specify temperature limits or coating type, leaving users to rely on general guidance.
Bacterial growth in heating element or crevices
Air fryers accumulate food residue and grease in crevices and on heating elements. If not cleaned regularly, bacteria and mold can grow in these areas, posing a hygiene rather than chemical hazard. This applies broadly to the product category but is user-dependent.
Manufacturing emissions (off-gassing on first use)
New air fryers may release volatile organic compounds (VOCs) from the non-stick coating, insulation, or adhesives during initial heating. This is typically temporary and resolves after a few preheating cycles but can trigger respiratory irritation in sensitive individuals; ventilate during first use.
What’s reassuring
Stainless steel leaching (chromium, nickel)
The stainless steel body and heating elements are not in direct food contact during normal use; interior surfaces are protected by the non-stick coating. No established leaching risk is documented for stainless steel air-fryer housings at typical operating temperatures.
The full breakdown
What it's made of and why it matters
The Cosori Premium II Plus has a stainless steel exterior housing, which is chemically inert and does not leach into food. The cooking basket features a non-stick coating of unknown composition; Cosori does not publicly specify whether this is Teflon-type coating-based (Teflon-type), ceramic, or another polymer. Non-stick coatings can shed microparticles or release fumes if overheated or damaged, making the lack of transparency a material concern for this product.
The brand's record and disclosure
Cosori maintains a corporate website emphasizing product design and user reviews but does not publish material safety data sheets, coating specifications, or PFAS-related statements on widely available channels. The brand has not pursued third-party certifications (such as Greenguard or similar) to validate air-fryer safety claims. This silence on chemical composition is notable in a product category where non-stick coatings are the primary surface contact point with food.
How it compares in its category
Air fryers typically rely on non-stick coatings to function; most major brands (Instant Pot, Ninja, Philips) similarly do not disclose coating chemistry on product pages, though some have committed to phasing Teflon-type coating in response to consumer pressure. The Cosori Premium II Plus is mid-range in price and popularity but offers no material advantage in transparency compared to competitors. Ceramic-coated alternatives exist but are rarer and often more expensive in this category.
If you buy it
Use the air fryer at manufacturer-specified temperatures (typically under 400F for most models); Teflon-type coating coatings degrade and release fumes above 500F. Inspect the cooking basket regularly for scratches, peeling, or discoloration, which indicate coating breakdown; replace if visible damage occurs. Hand-wash the basket gently to avoid abrasion; avoid metal utensils. If you detect any odor during preheating or cooking, stop use immediately and ventilate the kitchen.
What we don’t know
- Basis
- Model estimate, 35% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Cosori has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Air Fryers
Ninja
Crispi 4-in-1 Portable Glass Air Fryer Cooking System
Glass cooking vessel with stainless steel and plastic components
Thermal fracture or stress in glass cooking vessel
Limited concern
Formaldehyde / VOCs
Limited concern
Electrical hazard or heating element degradation
Limited concern
Glass cooking surface avoids nonstick coatings entirely.
⚠Risky category by default
Ninja
Crispi Pro 6-in-1 Glass Air Fryer
Glass cooking vessel with stainless steel components
Thermal shock / glass breakage risk
Limited concern
Glass construction means lower PFAS concern than typical nonstick air fryers.
⚠Risky category by default
Cosori
Smart Toaster Oven
stainless steel exterior, glass and metal interior
Thermal degradation of gaskets or seals
Limited concern
Grease accumulation and combustion byproducts
Limited concern
Glass door thermal stress and breakage
Limited concern
Lower PFAS concern, toaster ovens rarely use nonstick coatings, though brand makes no transparency statement.
⚠Risky category by default
More air fryers grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.