Is Fellow Aiden Plastic-Free? What Fellow Says It’s Made Of

Is the Fellow Aiden plastic-free?

No, and Fellow doesn’t claim it is. The product page lists the Aiden’s materials as “High-quality, BPA free-food grade plastic, stainless steel, and silicone.” Glass isn’t on the list. Fellow’s marketing is about brewing control: it calls Aiden “the coffee maker that thinks like a pour-over”, with adjustable temperature, bloom and pulses.

That matters because a lot of people searching for a plastic-free coffee maker land on Aiden. It’s a well-reviewed brewer with a steel carafe and no hot plate. Those are real design choices, but they don’t make the water path plastic-free.

What does Fellow say Aiden is made of?

Fellow has published four relevant statements. Here they are exactly.

• Product page: “Materials: High-quality, BPA free-food grade plastic, stainless steel, and silicone.”
• “Is Aiden BPA free?” “Aiden uses polyphenylene oxide PPO which is 100% BPA-free and doesn’t leech when boiled for 12 hours. We chose this material to achieve maximum thermal stability and true-to-the-degree temperature control.” It adds that the material “makes the price point significantly more accessible”.
• “What is Aiden’s Carafe Made From?” “Aiden’s carafe is double-walled stainless steel and vacuum-insulated.”
• Product page, silicone: “A silicone seal helps manage heat and moisture during brewing to protect nearby cabinets and surfaces.”

Fellow’s reason for choosing PPO is worth reading closely. “Thermal stability” and “temperature control” are properties you need where water is being heated and held at a set temperature, so the plastic is probably in or near the hot side. That is our inference from Fellow’s wording, not something Fellow states. The help center does not say whether the tank, the internal lines, the showerhead or the baskets are PPO.

Which Aiden parts touch hot water?

So the honest picture is three known facts and four gaps. Hot water passes through the lines, the heater, the showerhead and the basket, and Fellow has named a heat-stable plastic without naming where it goes. Paper filters sit between the basket and the grounds, but hot water still touches the basket walls. The carafe is steel. The Aiden ships with the thermal carafe only, according to Fellow’s in-the-box list; we found no glass carafe option from Fellow.

What is PPO, and does “doesn’t leech” settle the question?

Polyphenylene oxide is an engineering thermoplastic, chosen in appliances for heat resistance and dimensional stability. It is a different polymer from the polypropylene in many kettles and pod machines and from the Tritan copolyester in many cold tanks. Fellow’s statement that it is “100% BPA-free” is about one chemical. BPA-free is a claim about what isn’t in the plastic, not proof that nothing comes out of it; our guide to BPA-free plastic explains the difference.

The “doesn’t leech when boiled for 12 hours” line raises more questions than it answers. Fellow hasn’t published the test: which part, which lab, what was measured, at what detection limit. “Leaching” usually means chemicals migrating into a liquid, and a chemical migration result is not a count of physical particles. A boiling test on a sample also isn’t the same as months of hot water, scale and descaling solution running through a machine. We’d treat it as a manufacturer claim that may well be true for what was measured, without evidence that it covers microplastics.

Use the App

Is your brewer’s hot water path plastic?

Scan your coffee maker. The app reads the maker’s declared materials, shows what it does and doesn’t disclose, and points to brewers that publish a full water-path breakdown. It doesn’t test your coffee.

How does Aiden compare with Moccamaster, Ratio, Caraway, Breville and OXO?

The table sorts each brewer by what touches hot water, using only what each maker publishes. A blank in a maker’s disclosure is shown as a blank, not filled in with a guess.

Retrieved October 18, 2026. Prices change. Caraway announced the 10-Cup on September 22, 2026; its product page doesn’t list seals or valves, and its listed payment plan is four payments of $124.

Three groups emerge. Caraway is the only one here whose maker claims no plastic touches the water or coffee: “made entirely of stainless steel and glass”, though its page doesn’t list seals. Ratio’s Eight Series 2 keeps plastic to the cold tank and puts silicone, glass, aluminum and steel on the hot side; the Six has a polymer-lined basket. Moccamaster openly says plastic parts touch coffee or water, and our Moccamaster guide traces them. Aiden, Breville and OXO sit in the third group: they don’t publish enough to place each part.

How do you ask Fellow what touches the water?

Fellow’s help center has a chat assistant that can hand you to its customer experience team. Ask specific, part-by-part questions, because “is it safe?” will get you the BPA answer again:

1. What is the water tank made of?
2. Which parts are PPO: the heater housing, internal water lines, fittings, showerhead or baskets?
3. What are the heating element and the parts directly around it made of?
4. Are the internal tubes and seals silicone, and are any in the hot-water path?
5. What is the carafe lid made of?
6. Can you share the 12-hour boil test: what was measured, by whom, and at what detection limit? Was any particle testing done?

If you get answers, keep them with your purchase records, and check that they apply to your production version. A useful answer names a material for each part. A vague answer is information too.

How should you look after an Aiden’s plastic parts?

Fellow’s care instructions are the ones to follow, and they are specific. None of them is presented by Fellow as a way to reduce particles, and we don’t claim that either. They are about keeping each part in the condition it was designed for.

• Dishwasher only for the baskets. Fellow says “the only two parts of Aiden that are dishwasher safe are the two included brew baskets.” The carafe, showerhead and water tank are hand-wash parts.
• Gentle on the showerhead. Fellow recommends dish soap, warm water and “a soft brush or sponge”, and asks you not to use “anything overly abrasive”.
• Descale when prompted. Aiden decides the interval from your water. Fellow asks for “a high quality biodegradable and phosphate-free coffee machine liquid descaler” and names Urnex Liquid Dezcal. The cycle runs in three stages of about 16, 10 and 10 minutes.
• Use paper filters. Aiden ships with 15 cone and 15 flat-bottom filters and takes standard Melitta sizes, so finding replacements is easy.

If a part cracks, warps or discolors badly, contact Fellow support (Aiden carries a two-year standard warranty) rather than improvising a replacement. The same advice applies to any brewer in the comparison table.

What the evidence does not establish

• No Aiden particle test. The reviewed sources did not include a micro- or nanoplastic measurement of coffee from an Aiden, or from any of the brewers in the table.
• No public PPO leaching data. Fellow’s 12-hour boil claim is unpublished. Even if accurate, it describes chemical migration, not particle release.
• No ranking by exposure. A glass tank or steel showerhead is a real materials difference, but no study has compared these brewers’ output.
• Our PPO-placement inference is an inference. Fellow’s wording suggests the hot side; only Fellow can confirm.
• No health outcome. The FDA says current scientific evidence does not demonstrate that levels of micro- and nanoplastics detected in foods pose a risk to human health.

Should you buy an Aiden, or something else?

• If brewing control matters most and you accept some plastic in the machine, Aiden is a well-specified brewer with a steel carafe and no hot plate. Use paper filters, descale when it prompts you, and hand-wash the showerhead and tank as Fellow advises.
• If you want no plastic touching hot water, the Caraway 10-Cup is the closest documented option, with the seal question still open. The Ratio Eight Series 2 keeps plastic to the cold tank.
• If you already own an Aiden, nothing here shows you need to replace it. Ask Fellow the questions above if the parts matter to you.
• If you’d rather skip the machine, a glass pour-over and a steel kettle remove the hot plastic path entirely. Our brewing-method comparison traces each option.

For the wider coffee picture, from beans to cups, see our microplastics in coffee hub. If a cold tank in Tritan is the deciding point, read is Tritan a microplastic?