Oil Less Fryer Air Fryer 16 Quart Replacement Clear Glass vs Premium II Plus 6.5-Quart Air Fryer: which is safer?

Big Boss Oil Less Fryer Air Fryer 16 Quart Replacement Clear Glass is the clear pick. Cosori Premium II Plus 6.5-Quart Air Fryer carries a failing PFAS grade, and we never recommend buying a failing product.

Our pick

Big Boss Oil Less Fryer Air Fryer 16 Quart Replacement Clear Glass

Big Boss

Oil Less Fryer Air Fryer 16 Quart Replacement Clear Glass

PFAS grade

Excellent 75/100

Overall grade

Good 67/100

Verdict

Buy

Hazard flags

⚑ 2

Material

borosilicate glass, bare uncoated

Confidence

95%

PossibleThermal shock and fracture

PossibleEdge chipping and glass fragments

Cosori Premium II Plus 6.5-Quart Air Fryer

Cosori

Premium II Plus 6.5-Quart Air Fryer

PFAS grade

Bad 15/100

Overall grade

Bad 0/100

Verdict

Skip

Hazard flags

⚑ 4

Material

Stainless steel body; non-stick coated cooking basket (coating unspecified)

Confidence

35%

PossibleNon-stick coating degradation and microparticle release

PossibleThermal fume release from non-stick coating

PossibleBacterial growth in heating element or crevices

Where these two actually differ

  • We flag Thermal shock and fracture and Edge chipping and glass fragments on the Big Boss and not on the Cosori.
  • We flag Non-stick coating degradation and microparticle release, Thermal fume release from non-stick coating, Bacterial growth in heating element or crevices and Manufacturing emissions (off-gassing on first use) on the Cosori and not on the Big Boss.
  • The Big Boss is borosilicate glass, bare uncoated where the Cosori is Stainless steel body; non-stick coated cooking basket (coating unspecified), which is most of the difference in these two grades.
  • The gap is 60 points, wide enough that this is not a close call, and the Big Boss is the one to buy.
  • We are less certain about the Cosori grade, at 35% confidence against 95%, because it discloses less.

Both products run through the same public rubric, which covers materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →

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