Chefmaker Combi Smart Air Fryer vs Crispi 4-in-1 Portable Glass Air Fryer Cooking System: which is safer?
Ninja Crispi 4-in-1 Portable Glass Air Fryer Cooking System is the clear pick. Dreo Chefmaker Combi Smart Air Fryer carries a failing PFAS grade, and we never recommend buying a failing product.
Dreo
Chefmaker Combi Smart Air Fryer
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleTeflon-type coating fume risk (thermal degradation)
PossibleCoating degradation and aluminum leaching
PossibleMicroplastic or polymer particles from coating breakdown
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
Where these two actually differ
- We flag PTFE fume risk (thermal degradation), Coating degradation and aluminum leaching and Microplastic or polymer particles from coating breakdown on the Dreo and not on the Ninja.
- 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 Dreo.
- The Dreo is nonstick-coated basket (composition unspecified) where the Ninja is Glass cooking vessel with stainless steel and plastic components, 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 Dreo grade, at 38% 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