Crispi 4-in-1 Portable Glass Air Fryer Cooking System vs T17190 Vortx 11L Dual Layer Air Fryer: which is safer?
Ninja Crispi 4-in-1 Portable Glass Air Fryer Cooking System is the clear pick. Tower T17190 Vortx 11L Dual Layer Air Fryer carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Ninja
Crispi 4-in-1 Portable Glass Air Fryer Cooking System
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleThermal fracture or stress in glass cooking vessel
PossiblePlastic housing off-gassing (VOCs and formaldehyde)
PossibleElectrical hazard or heating element degradation
Tower
T17190 Vortx 11L Dual Layer Air Fryer
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleTeflon-type coating fume emission (thermal decomposition)
PossibleCoating degradation and particle ingestion
PossibleAluminum leaching (substrate exposure)
Where these two actually differ
- We flag Thermal fracture or stress in glass cooking vessel, Plastic housing off-gassing (VOCs and formaldehyde) and Electrical hazard or heating element degradation on the Ninja and not on the Tower.
- We flag PTFE fume emission (thermal decomposition), Coating degradation and particle ingestion, Aluminum leaching (substrate exposure) and Bacterial biofilm in crevices if inadequately cleaned on the Tower and not on the Ninja.
- The Ninja is Glass cooking vessel with stainless steel and plastic components where the Tower is Nonstick-coated cooking basket; coating type not specified, 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 Ninja is the one to buy.
- We are less certain about the Tower grade, at 35% confidence against 75%, 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