Ninja Crispi 4-in-1 Portable Glass Air Fryer Cooking System
Glass cooking surface avoids nonstick coatings entirely.
This Ninja air fryer uses glass as its main cooking surface, which doesn't need Teflon-family coating coatings and is naturally PFAS-free. Ninja doesn't make public PFAS claims. Stainless and plastic parts have low nonstick risk, though minor coating details aren't public.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Glass cooking vessel with stainless steel and plastic components
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
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.
Thermal fracture or stress in glass cooking vessel
Borosilicate glass is durable but can fracture if subjected to rapid temperature changes or impacts. Risk is low with normal use but increases if the vessel is exposed to cold water immediately after heating or dropped.
Formaldehyde / VOCs
The plastic enclosure may release volatile organic compounds (VOCs) during initial use or when exposed to sustained heat from the cooking chamber. No specific testing is publicly available for this model; off-gassing typically diminishes after the first few hours of operation.
Source: ATSDR ↗Electrical hazard or heating element degradation
Like all heating appliances, the internal heating element can corrode over time with moisture or salt exposure. Degradation is not a chemical hazard but can reduce performance; ensure unit is dry before storage and avoid prolonged exposure to humid environments.
What’s reassuring
Uncoated safe material
Bare cast iron, stainless steel, carbon steel, or glass with no PFAS coating.
Stainless steel leaching (minor metals)
High-grade stainless steel (commonly 304 or 316) does not leach detectable amounts of iron, chromium, or nickel into food under normal cooking conditions. No recalls or reports specific to this product are on record.
BPA & bisphenols
No public disclosure from Ninja confirms BPA-free or phthalate-free status for this model's plastic housing. Modern kitchen appliances typically use polystyrene or acrylonitrile-butadiene-styrene (ABS), which are not known to leach into food when not in direct food contact, but this has not been verified for this specific product.
Source: FDA ↗The full breakdown
What it's made of and why it matters
The Ninja Crispi's primary cooking surface is borosilicate glass, which is chemically inert and does not leach harmful compounds during heating. The unit combines stainless steel structural components, a plastic housing, and internal heating elements. Glass is the safest material for direct food contact in air fryers because it avoids the coating degradation and PFAS off-gassing risks present in traditional nonstick-coated models.
The brand's record and disclosure
Ninja (SharkNinja Operating LLC) does not publicly disclose detailed material safety testing or ingredient sourcing for cookware products on its website. The brand has no known major product recalls or safety controversies specific to air fryers, though like most kitchen appliance manufacturers, Ninja provides minimal transparency about flame retardants or coatings in plastic housing. No third-party certifications (NSF, GOTS, etc.) are evident for this model.
How it compares in its category
Most air fryers use perforated nonstick-coated baskets or trays, typically Teflon-type coating-based, which can degrade with high heat and release fumes if overheated. The Ninja Crispi's glass cooking vessel is a standout choice within the portable/compact air fryer segment, where plastic housings and aluminum cooking surfaces are standard. This design choice places it in the lower-risk tier for cooking surface hazards, though it does not eliminate concerns around plastic off-gassing in the main housing.
If you buy it
Use the glass vessel only within the manufacturer's recommended temperature limits (typically up to 400F for glass); do not exceed these, as thermal shock or stress fractures can occur. Clean the glass and stainless steel components with mild soap and warm water; avoid abrasive scrubbers that may scratch glass or expose underlying material. Inspect the plastic housing periodically for cracks or discoloration that suggest degradation. Replace the unit if the glass vessel cracks or the heating element shows signs of corrosion.
What we don’t know
- Basis
- Model estimate, 75% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Ninja has made none
Formulations change between production runs, so check the current label. How we grade.
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.