Oil Less Fryer Air Fryer 16 Quart Replacement Clear Glass vs SM-AIR-1818 4.2 Qt. 1800-Watt Black Air Fryer with Double Ceramic Basket and Pan Set and Rapid Air Technology: which is safer?

Big Boss Oil Less Fryer Air Fryer 16 Quart Replacement Clear Glass is the clear pick. Emerald SM-AIR-1818 4.2 Qt. 1800-Watt Black Air Fryer with Double Ceramic Basket and Pan Set and Rapid Air Technology 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

Emerald SM-AIR-1818 4.2 Qt. 1800-Watt Black Air Fryer with Double Ceramic Basket and Pan Set and Rapid Air Technology

Emerald

SM-AIR-1818 4.2 Qt. 1800-Watt Black Air Fryer with Double Ceramic Basket and Pan Set and Rapid Air Technology

PFAS grade

Bad 15/100

Overall grade

Bad 0/100

Verdict

Skip

Hazard flags

⚑ 3

Material

Double ceramic basket and pan; nonstick coating unspecified

Confidence

45%

PossibleCeramic coating adhesion and binder chemistry

PossibleMetal leaching from substrate (aluminum)

LikelyCoating degradation and microabrasion over time

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 Emerald.
  • We flag Ceramic coating adhesion and binder chemistry, Metal leaching from substrate (aluminum) and Coating degradation and microabrasion over time on the Emerald and not on the Big Boss.
  • The Big Boss is borosilicate glass, bare uncoated where the Emerald is Double ceramic basket and pan; nonstick 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 Emerald grade, at 45% confidence against 95%, because it discloses less.

Both products run through the same public rubric: 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 →

More air fryers: see the full ranking