Walk through a kitchen store -- or scroll through an air fryer listing on Amazon -- and you will see "PFOA-Free" displayed prominently on boxes from Tefal, Calphalon, Cuisinart, and dozens of others. Depending on where you look, the same products might also be labeled "PFAS-Free." These two phrases look related. They feel like they belong to the same family of safety claims. Brands deploy them side by side, often without distinction.
They are not the same. One of them has been effectively meaningless since 2015. The other is the only one worth evaluating. And the gap between them is exactly where the most common cookware greenwashing lives.
If you have ever wondered whether your "PFOA-free" air fryer is actually safe from PFAS, this is the piece that answers the question.
What PFOA-Free Actually Means in 2026
PFOA (perfluorooctanoic acid) is a specific member of the PFAS family -- an 8-carbon acid that DuPont and 3M used for decades as a processing aid in manufacturing PTFE (Teflon) coatings. PFOA made the slippery polymer stick to metal during production. It also turned out to be a confirmed human carcinogen (WHO IARC Group 1, December 2023), with the strongest documented links to kidney cancer and testicular cancer.
When that became undeniable through the C8 lawsuits against DuPont and the resulting 69,000-person C8 Health Project, the EPA launched a voluntary phase-out program. Eight major manufacturers committed to eliminating PFOA from US production. By 2015, the phase-out was complete.
This is the fact that makes "PFOA-free" essentially useless as a safety claim today: virtually every nonstick product manufactured in the United States since 2015 is already PFOA-free. It describes the universal baseline of modern cookware production, not a distinguishing safety feature. A brand printing "PFOA-free" on a box in 2026 is telling you they complied with an industry-wide standard that took effect more than a decade ago.
This does not mean PFOA is not a concern. If you own cookware or an air fryer with a PTFE basket purchased before 2013 to 2015, the coating was manufactured using PFOA as a processing aid, and residual PFOA may remain -- particularly if the coating is scratched or worn. Pre-2015 pans with visible coating damage are a genuine exposure concern. Post-2015 pans labeled PFOA-free are not meaningfully safer than any other post-2015 pan: the claim describes a shared property of the entire product category.
What PFAS-Free Actually Means
PFAS (per- and polyfluoroalkyl substances) is not a single chemical. It is a family of more than 10,000 synthetic compounds, all built on the same extraordinarily stable carbon-fluorine bond. PFOA is one member of that family. PTFE is another. GenX is another. PFBS, PFHxA, PFOS, and thousands of additional compounds with varying chain lengths and functional groups all belong to the PFAS class.
A product that is genuinely PFAS-free contains none of them -- not PFOA, not PTFE, not GenX, not any of the 10,000-plus compounds the EPA and OECD include under the structural definition of PFAS.
That is a fundamentally different and much higher standard than removing a single phased-out processing acid from a product that still uses a fluoropolymer coating. And that gap -- between eliminating one specific PFAS and eliminating the class -- is the gap that brands have learned to exploit.
Why PFOA-Free Cookware Can Still Contain PTFE
Here is the confusion that costs families the most: PTFE (polytetrafluoroethylene) is the polymer that makes Teflon and generic nonstick coatings slippery. PFOA was historically used to manufacture PTFE, but PTFE and PFOA are not the same compound. You can remove PFOA from the manufacturing process while leaving the PTFE coating entirely intact. That is exactly what the 2015 phase-out accomplished.
Under the EPA's structural definition and the OECD's definition of PFAS (ENV/CBC/MONO(2021)25), PTFE qualifies as a PFAS. It is a fully fluorinated polymer -- every carbon-hydrogen bond replaced by a carbon-fluorine bond -- which is the defining structural feature of the PFAS class. The EPA has included high-molecular-weight fluoropolymers like PTFE within the PFAS umbrella in its regulatory framework since at least 2021.
This means a product can be simultaneously:
- PFOA-free (the processing acid was removed in 2015)
- Still coated with PTFE (the fluoropolymer is still there)
- Not PFAS-free (PTFE is a PFAS)
When a brand labels a PTFE-coated air fryer basket or frying pan "PFOA-free," every word of that claim may be technically accurate. And the product is still not PFAS-free. That is not a technicality. It is the entire marketing strategy.
The GenX Problem: When You Replace One PFAS With Another
After PFOA was phased out, PTFE manufacturers needed a replacement processing aid. DuPont (later spun off as Chemours) developed GenX (chemical name HFPO-DA, hexafluoropropylene oxide-dimer acid) specifically for this purpose. GenX is shorter-chain than PFOA, which means it does not bioaccumulate as readily in blood. But it is still a PFAS.
Early animal toxicology data on GenX shows liver toxicity and immune effects. GenX has contaminated drinking water near the Chemours plant in Fayetteville, North Carolina, at concentrations that triggered health advisories. The EPA's April 2024 drinking water rule covered GenX at 10 parts per trillion -- a standard that acknowledges its toxicity is a real concern, not a theoretical one.
The GenX story is why PFAS-free certifications have moved toward testing total organic fluorine (TOF) rather than testing for specific named compounds. When you screen for TOF, you catch compounds that have not yet been individually identified or named. When you screen for specific compounds by name, manufacturers can switch to a structurally similar replacement that is not yet on the list. GenX is the most documented example of that replacement pattern, but it is not the only one.
"PFOA-free" on a post-2015 product means PFOA was removed. It says nothing about whether GenX is present in the PTFE manufacturing process, at what concentrations, or whether it migrates into food during cooking.
The Label Hierarchy for Families
Three claims appear on nonstick cookware and air fryer products. They are not equivalent. From lowest to highest protective value:
PFOA-free: The floor, not the ceiling. Since 2015, this describes every modern US-manufactured nonstick product. It excludes one chemical that was phased out a decade ago. It says nothing about PTFE, GenX, or the rest of the PFAS class. Treat it as a baseline, not a safety feature.
PTFE-free: A meaningfully higher bar. PTFE is the dominant PFAS in nonstick cookware. A product that is genuinely PTFE-free -- using ceramic sol-gel, stainless steel, or cast iron instead -- has removed the primary fluoropolymer source. However, PTFE-free alone does not guarantee freedom from all PFAS: manufacturing aids or solvents used to apply a non-PTFE coating could theoretically contain PFAS if not independently tested.
PFAS-free (with verified testing): The claim that matters -- when it is backed up. "PFAS-free" as a label alone has no federal legal definition in the United States. No FDA or EPA rule requires testing before a brand makes the claim. But "PFAS-free" combined with third-party testing to total organic fluorine limits, or certification under NSF 537, is the highest-confidence claim available to consumers today.
The practical read: if a product says "PFOA-free" and nothing else, that is a prompt to look harder. If a product says "PFAS-free" with no supporting data or certification, the claim has no more legal weight than the PFOA-free label. If a product says "PFAS-free AND PTFE-free" with published third-party test results, that is a substantiated claim worth taking seriously.
How This Plays Out on Real Products
The difference between PFOA-free and PFAS-free is not abstract -- it maps directly onto specific brand choices in the cookware and air fryer markets.
Tefal (T-fal): Tefal explicitly markets many of its products as "PFOA-free" and uses PTFE nonstick coatings as its primary cooking surface technology. The PFOA-free claim is accurate for post-2015 products. The product still contains PTFE. It is not PFAS-free under the EPA's structural definition. Tefal has not published third-party PFAS testing or certified to NSF 537.
Cuisinart and other mainstream brands: The same pattern applies. Most mainstream nonstick cookware brands use PTFE coatings and market them as PFOA-free. This is legally accurate and substantively incomplete. The PFAS class is still present in the coating.
GreenPan (Thermolon ceramic): GreenPan's Thermolon coating is a ceramic sol-gel -- silica-based, with no fluoropolymer component. It is PFAS-free by chemical structure. Consumer Reports tested GreenPan ceramic pans and found no detectable PFAS among 96 compounds screened. However, GreenPan stopped publishing test data publicly after 2020, settled a 2019 class action over marketing practices, and no longer maintains the same level of third-party transparency that Caraway and Our Place do. The claim remains chemically credible but less verifiable than it once was.
Caraway: Explicitly PTFE-free and PFAS-free, backed by third-party lab testing for over 200 harmful substances with results published on the brand's website. Compliant with California AB 1200 disclosure requirements. The current consumer benchmark for claim transparency in ceramic cookware.
Our Place (Always Pan, Wonder Oven): Ceramic coating explicitly stated as PFAS-free and PTFE-free. The Wonder Oven markets itself as a PFAS-free air fryer alternative with third-party backing. Consistently cited alongside Caraway as the most transparent brands in the ceramic cookware space.
HexClad (cautionary case): In 2025, HexClad agreed to a $2.5 million class action settlement over allegations that it labeled PTFE-coated cookware as "Non-Toxic, PFAS-Free." The lawsuit argued that marketing a PTFE-containing product as PFAS-free was materially misleading. As a settlement condition, HexClad agreed to stop making PFAS-free or non-toxic claims on products containing PTFE. This case is the clearest illustration of what happens when the PFOA-free/PFAS-free confusion is deliberately exploited in marketing.
What NSF 537 Changed
On March 25, 2025, NSF International launched Certification Guideline 537: PFAS-Free Products for Nonfood Compounds and Food Equipment Materials. This is the first standardized third-party certification with a defined analytical methodology for PFAS-free verification.
NSF 537 defines PFAS-free as:
- No intentionally added PFAS
- No post-consumer recycled material or intentionally used PFAS additives
- Total organic fluorine (TOF) below 50 parts per million
The TOF threshold matters because it tests for the chemical fingerprint of PFAS as a class, not individual compounds by name. A 50 ppm TOF limit catches compounds that have not yet been individually identified -- including potential GenX successors that have not yet been registered or studied. It is structurally immune to the replacement-chemical loophole.
NSF 537 was designed primarily for commercial food equipment suppliers rather than direct consumer retail products. But it sets the analytical standard that any credible PFAS-free claim for a food-contact product should aspire to meet. When evaluating a brand's PFAS-free claim, the right question to ask is: has this product been tested to NSF 537 or an equivalent total organic fluorine standard? A brand that answers yes and can direct you to the results is in a different category than a brand that prints the claim on a box.
Air Fryers Deserve Extra Scrutiny
The PFOA-free vs PFAS-free distinction is important for all cookware. For air fryers, it is especially important.
Air fryers operate differently from open pans. The enclosed cooking cavity, the high-speed fan, and the high-heat convection environment mean that anything released from a coating surface gets circulated throughout the entire cooking space and into the air around the appliance -- not just rising from an open pan surface. PTFE begins degrading at 260 degrees Celsius (500 degrees Fahrenheit), and air fryer preheating can push basket surface temperatures toward or past that threshold before food is added as a thermal buffer.
A scratched PTFE basket in an air fryer is a higher-risk scenario than a scratched pan on a stovetop, for exactly this reason: the degradation products are distributed through the cooking environment by the fan rather than dispersing into open kitchen air. The enclosed-cavity, fan-circulated design is also why PTFE fume toxicity is especially dangerous for pet birds kept near air fryers -- a consideration documented in veterinary literature.
This means the PFOA-free label on an air fryer basket is doing less work than it appears to. The enclosed operating environment makes PFAS-free verification -- including third-party confirmation that no PTFE is present -- a meaningfully higher priority than it would be for a simple stovetop pan.
For stainless steel basket air fryer models (certain Breville configurations, for example), no coating verification is needed: stainless steel is PFAS-free by material. For ceramic-coated models from Our Place, the PFAS-free claim is backed by explicit brand disclosure and third-party alignment. For any air fryer labeled only "PFOA-free" without a PFAS-free or PTFE-free statement, the coating is almost certainly PTFE.
How to Read a Label Without Getting Fooled
Here is a practical framework for any nonstick cookware or air fryer purchase:
Step 1: Find the coating material. The brand should be able to tell you specifically what the cooking surface is: ceramic sol-gel, stainless steel, cast iron, carbon steel, or a named polymer like PTFE/polytetrafluoroethylene. If the brand will not disclose the coating chemistry, no PFAS-free claim resting on that product has any foundation.
Step 2: Confirm PTFE-free status. Look for the words "PTFE-free" or "polytetrafluoroethylene-free" stated explicitly -- not just "Teflon-free" (Teflon is a brand name; generic PTFE is the same compound). A brand that claims PFAS-free without explicitly addressing PTFE may be operating under a definition of PFAS that excludes high-molecular-weight fluoropolymers -- an exclusion that is inconsistent with EPA and OECD structural definitions.
Step 3: Look for third-party testing. The brand should be able to direct you to published test results. Caraway publishes its third-party lab results on its website. NSF 537 certification is searchable at nsf.org. MADESAFE certification involves an explicit PFAS screen. A brand that references "independent testing" without providing access to the results is not meeting the same standard.
Step 4: Check for California AB 1200 compliance. California's AB 1200, effective January 2024, requires brands to disclose all intentionally added chemicals on product websites and packaging. A brand compliant with AB 1200 should have a publicly accessible chemical disclosure. The absence of that disclosure for a brand selling into California is a warning sign.
Step 5: Default to materials that are PFAS-free by chemistry. Stainless steel, cast iron, carbon steel, and enameled cast iron contain no fluoropolymers by design. For situations where nonstick is genuinely needed, a third-party-tested ceramic coating from a brand with transparent chemistry disclosure is the next-best option. You do not need to achieve perfection -- you need to be making the evaluation with accurate information, not marketing language.