Compare Air Fryers
Fritaire Non Toxic Air Fryer Pro, 9-in-1 Glass Air Fryer, Self-Cleaning scores higher on safety - here's why.
R3 scored the Fritaire Non Toxic Air Fryer Pro, 9-in-1 Glass Air Fryer, Self-Cleaning 8.3/10 and the Granitestone Big Boss 16Qt Large Glass Air Fryer 7.7/10 on the same air fryers scoring system, weighing safety, efficacy, and usability. The Fritaire Non Toxic Air Fryer Pro, 9-in-1 Glass Air Fryer, Self-Cleaning comes out ahead, led by its safety score (8.4/10 vs 7.7/10).
The most important dimensions, side by side.
See which one actually scores higher — and why
Free account unlocks full safety scores, spec-by-spec breakdown, and the R3 verdict on Fritaire Non Toxic Air Fryer Pro, 9-in-1 Glass Air Fryer, Self-Cleaning vs Granitestone Big Boss 16Qt Large Glass Air Fryer.
Unlock the full Fritaire Non Toxic Air Fryer Pro, 9-in-1 Glass Air Fryer, Self-Cleaning vs Granitestone Big Boss 16Qt Large Glass Air Fryer breakdown
Free account unlocks all safety scores, complete spec comparison, scoring rationale, and the R3 verdict on which one to buy.
Everything you need to make the call - who each one is for, and who should skip it.
Go for it if you...
Zero-coating, PFAS-free food-contact surfaces are your top priority.
You want glass bowl visibility and 360-degree convection cooking.
You accept the premium price and short warranty for material safety assurance.
You want a large-capacity (16 qt) glass air fryer with zero coatings at a mid-range price.
Dishwasher-safe parts (including the glass bowl) matter for easy cleanup.
You want the glass bowl convection cooking experience with halogen + infrared.
The main thing to know
The Fritaire achieves the highest safety score in this batch thanks to 304 stainless steel racks and zero coatings. The tradeoff: a 90-day warranty (well below the 1-year industry standard), no UL/ETL electrical safety certification, and a $200 premium price.
The Granitestone Big Boss uses tempered glass and stainless steel racks with zero coatings -- strong material safety. The stainless steel grade is unconfirmed (generic, not 304). ETL certification is referenced in Amazon text but not independently verified.
Skip this if you...
You require UL/ETL electrical safety certification before purchasing any appliance.
A 90-day warranty on a $200 appliance is unacceptable to you.
You need dishwasher-safe cooking vessels for easy cleanup.
You need confirmed 304 or 316 stainless steel on food-contact surfaces.
You want independent PFAS verification beyond manufacturer claims.
You need independently confirmed UL/ETL certification.
Neither of these quite what you're looking for?
I've reviewed all Air Fryers options at every price pointEvery Air Fryers in our database is scored using R3's deterministic scoring system - the same inputs always produce the same score. For this comparison, we evaluated Fritaire and Granitestone across 3 independent criteria: Safety (90%), Efficacy (7%), Usability (3%). No sponsored rankings. No paid placements.
Straight answers - no sponsored content, no filler.
The Fritaire Non Toxic Air Fryer Pro, 9-in-1 Glass Air Fryer, Self-Cleaning uses a borosilicate glass basket with a stainless steel crisper plate. Stainless steel and glass are inherently PFAS-free materials, so this model passes our material safety screen.
Between these two, the Fritaire Non Toxic Air Fryer Pro, 9-in-1 Glass Air Fryer, Self-Cleaning (borosilicate glass basket, 8.4/10 safety) uses materials I'm more comfortable with at high heat. The Granitestone Big Boss 16Qt Large Glass Air Fryer's borosilicate glass basket scored 7.7/10. In our scoring system, basket material accounts for a significant portion of the safety pillar, which is our highest-weighted scoring factor.
For families, capacity comes first: check the capacity specs for your family size. Overall, I'd lean toward Fritaire for most families.
304 stainless steel is inherently PFAS-free and won't off-gas at any cooking temperature. Nonstick coatings (PTFE/Teflon) are stable below 400°F but can begin degrading above that threshold. In our scoring system, stainless and borosilicate glass baskets consistently score higher on the safety pillar. That said, a well-maintained nonstick basket from a reputable brand still meets safety baselines. It's a question of margin, not danger.
R3 uses a deterministic scoring system - the same inputs always produce the same score. We evaluate each Air Fryers across Safety, Efficacy, Usability using independently verified data. No sponsored rankings. No paid placements. Every score is fully reproducible.
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