R3 (Research, Reviews, Recommendations)
    Loading...
    R3 (Research, Reviews, Recommendations)
    Compare
    Pricing
    Loading...
    R3 (Research, Reviews, Recommendations)

    We do the product research for parents. Same method, every product. No sponsors.

    Browse & compare

    • Compare products
    • Buying Guides
    • Safety Dictionary

    Popular categories

    • Water Filters
    • Juicers
    • Waffle Makers
    • Blenders
    • Nonstick Pans

    Company

    • About
    • Pricing
    • Contact
    • For Brands

    Legal

    • Privacy
    • Terms
    • Affiliate disclosure

    We do the research. You get the picks.

    New picks and research updates, straight to your inbox.

    © 2026 R3 Platform LLC. All rights reserved.

    FacebookInstagramX (formerly Twitter)TikTok
    YouTube
    KitchenAir FryersGranitestone Big Boss 16Qt Glass Air Fryer
    #3 of 15
    Granitestone Big Boss 16Qt Glass Air Fryer

    Key Specs

    Price

    $129.99 USD

    Wattage

    1300W

    Max Temperature

    400 F

    Container Material

    Tempered glass

    Granitestone

    Granitestone Big Boss 16Qt Glass Air Fryer

    #3 of 15 air fryers tested

    7.7R3 Score / 10
    RecommendedGood, with trade-offs worth knowing.
    Safety
    7.790% weight
    Efficacy
    8.47% weight
    Usability
    63% weight

    Sign up free to see pillar scores

    The bottom line

    What the product listing won't tell you

    Know before you buy

    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.

    Buy it if
    Granitestone Big Boss 16Qt Glass Air Fryer

    Granitestone

    Granitestone Big Boss 16Qt Glass Air Fryer

    $129.99
    Buy on Amazon
    Granitestone Big Boss 16Qt Glass Air Fryer

    Granitestone

    Granitestone Big Boss 16Qt Glass Air Fryer

    $129.99Buy on Amazon
    Recommended in:Best ValueNon-Toxic

    $129.99

    Buy on Amazon

    We may earn a commission. It doesn't affect our scores.

    You want a large-capacity (16 qt) glass air fryer with zero coatings at a mid-range price.

  1. Dishwasher-safe parts (including the glass bowl) matter for easy cleanup.

  2. You want the glass bowl convection cooking experience with halogen + infrared.

  3. Skip if
    • 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.

    Create a free account to see the buy / skip verdict

    Sign up free

    What's inside

    Specs the product listing doesn't explain

    Safety & Materials

    What your food and family come into contact with every use

    Container MaterialTempered glass
    Crisper Plate MaterialStainless steel (grade unconfirmed)
    Coating TypeNone (uncoated)
    Dishwasher SafeYes
    Safety CertificationETL (brand_claim)
    Efficacy

    What determines how well this performs its core job

    Wattage1300W
    Max Temperature400 F
    Usability

    Ease of use, maintenance, and longevity

    Price$129.99 USD
    Warranty1 years
    Noise LevelNot disclosed

    Sign up free to see spec values

    How we scored it

    3 criteria - open any layer to see exactly what we found

    7.7

    Safety

    Good

    8.4

    Efficacy

    Good

    6

    Usability

    Adequate

    SafetyCritical

    “Are the materials my food touches actually safe, and has anyone independent verified that?”

    90%
    7.7▾

    The full reasoning is in the verdict above.

    Create a free account to read it.

    Criteria

    Crisper Plate / Tray Base Material
    8/10

    The racks are stainless steel but the specific grade (304, 316, 18/8) is not disclosed. Likely food-safe but unconfirmed.

    Food-Contact Coating Type
    10/10

    Glass bowl and bare stainless steel racks -- nothing to chip, flake, or degrade.

    Container / Basket Base Material
    7/10

    The glass bowl is tempered glass. Food-safe but less chemically inert than borosilicate glass.

    EfficacyImportant

    “Will this air fryer actually crisp food well and heat up fast enough for weeknight cooking?”

    7%
    6.6▾

    The full reasoning is in the verdict above.

    Create a free account to read it.

    Criteria

    Cooking Vessel Type
    10/10

    Glass bowl with halogen, convection, and infrared heating provides 360-degree cooking.

    UsabilityImportant

    “How easy is this to clean, how loud is it, and will it last?”

    3%
    6▾

    The full reasoning is in the verdict above.

    Create a free account to read it.

    Criteria

    Dishwasher-Safe Basket
    10/10

    All removable parts including the glass bowl go in the dishwasher.

    Noise Level

    Safety research

    Safety standards and ingredients related to Granitestone Big Boss 16Qt Glass Air Fryer

    Standards met
    304 Stainless Steel (18/8)concepts

    The most common stainless steel alloy used in kitchen equipment, containing 18% chromium and 8% nickel (hence '18/8'). It is an actual material specification (ASTM A240/A276), not a marketing claim. 304 is the established standard for food-contact surfaces in commercial and consumer kitchen products, certified under NSF/ANSI 51 for food equipment materials.

    Technology
    Dehydrator Functiontechnology

    A low-temperature setting (typically 95-170F) on select air fryers that slowly removes moisture from food to create dried snacks like fruit chips, beef jerky, dried herbs, and yogurt drops. The dehydrator function lets families make preservative-free snacks at home with no added sugar or artificial ingredients.

    Rotisserie Functiontechnology

    A rotating spit or tumbling basket feature found primarily in oven-style air fryers that slowly turns food for even browning on all sides. The rotisserie function combines slow rotation with convection heating to cook whole chickens, roasts, and larger items with consistent results in one appliance.

    Every term is independently researched and sourced.

    Full Safety Dictionary

    Where to buy

    Verified retailer - current pricing

    Starting price

    $129.99

    R3 approved retailer Score unaffected by purchase
    Buy on Amazon

    We earn a small commission on purchases. It never influences our scores - R3 is funded by readers, not brands.

    Other Options to Consider

    Alternatives that address specific trade-offs

    Why this matters: Dishwasher-safe parts including the glass bowl. 1-year warranty is industry standard. Noise level unknown.

    AIRMSEN Portable Glass Air Fryer 6.3 QT
    Better usability

    AIRMSEN Portable Glass Air Fryer 6.3 QT

    AIRMSEN

    8.5$99.99

    Scores 9.5/10 on usability vs 6.0 here

    Livwell 6 Quart Glass Container Air Fryer
    Better usability

    Livwell 6 Quart Glass Container Air Fryer

    Livwell

    5.3$179.99

    Scores 6.5/10 on usability vs 6.0 here

    Ninja Crispi 4-in-1 Glass Air Fryer
    Better usability

    Ninja Crispi 4-in-1 Glass Air Fryer

    Ninja

    4.9$179.99

    Scores 8.1/10 on usability vs 6.0 here

    Cosori 9-in-1 TurboBlaze Air Fryer 6 Qt
    Better usability

    Cosori 9-in-1 TurboBlaze Air Fryer 6 Qt

    Cosori

    4.8$99.99

    Scores 9.7/10 on usability vs 6.0 here

    Didn't find the air fryer you need?

    See all air fryers we reviewed

    Create a free account to see alternative recommendations

    Sign up free

    #3 of 15 air fryers reviewed

    PFAS-Free Verification
    4/10

    Granitestone claims the product is free of Teflon and forever chemicals. Glass + stainless inherently lack PFAS, but no third-party testing published.

    Wattage
    5/10

    At 1300 watts, preheating is slower than higher-wattage competitors.

    User-Adjustable Temperature
    5/10

    Temperature adjustability not confirmed in sourced data.

    5/10

    No noise measurement published by manufacturer or any independent lab.

    Warranty Coverage (Years)
    5/10

    Standard 1-year limited warranty.