What is expiring in January 2027
Herman Miller has two Aeron chair EPDs on NSF that will reach end of validity on January 27, 2027. They are Aeron Chair Plastic Base, EPD10685, and Aeron Chair Aluminum Base, EPD10431, both listed under the BIFMA Seating PCR (NSF International Listings, 2026) (NSF International Listings, 2026).
Are replacements already live?
Yes. MillerKnoll, the EPD owner for Herman Miller brand seating, has published new Aeron EPDs in the International EPD System. The Aeron Chair Plastic Base for North America and Latin America is valid to April 29, 2031 (EPD International, 2026). An Aeron Chair Aluminum Base for Europe is also valid to April 29, 2031 (EPD International, 2026). These satisfy Type III requirements and keep the Aeron spec-ready in regions covered by each document.
Think of this as a channel change, not a program cliff. The NSF entries from 2022 are nearing their natural five‑year cycle, while the 2026 IES entries extend the runway to 2031.
What this means for specifiers
If a project is citing the older NSF EPD numbers, swap in the new IES Aeron IDs during submittals and keep the chain of custody tidy. The product, scope, and declared unit remain within the seating PCR family, so documentation continuity is straightforward in most submittal packages. If your owner or GC prefers a single operator’s portal, confirm which program operator they accept before finalizing forms.
For product resources and brand sustainability context, see Herman Miller’s sustainability hub and product tools at hermanmiller.com/better-world/sustainability (Herman Miller Sustainability, 2026).
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If a gap appears in a specific region or portal
We do not see a hard gap for Aeron coverage given the new IES publications. Still, some teams lock to a specific operator for portfolio consistency. In those cases, comparable task chairs with current EPDs include:
- Steelcase Leap, AMER/APAC, valid December 20, 2024 to December 20, 2029, EPD11015 (NSF International Listings, 2026).
- Haworth Fern Task Seating, Europe, EPD-IES-0012458, valid to May 19, 2029 (Haworth EPD, 2025).
- Teknion Aarea or Around seating families, valid May 27, 2025 to May 26, 2030, EPD11069 and EPD11070 respectively (NSF International Listings, 2025).
Why timely renewals still matter
Even with new Aeron EPDs in place, letting a widely referenced declaration lapse can create confusion across bid cycles and dealer portals. Many project teams will not accept expired documents, which means extra back‑and‑forth, slower approvals, and a higher chance a competing chair gets the nod. Publishing ahead of the cliff keeps sales teams on offense, not stuck in document tennis.
Program operator shifts are normal
Manufacturers often move between recognized operators as strategies evolve, markets change, or PCR alignment improves. Both NSF and the International EPD System are established operators used across building products and contract furniture. If your spec template still points to a single operator, consider updating language so product‑specific EPDs from recognized programs qualify consistently.
Handy reference for PCR context
Seating EPDs commonly use the BIFMA Seating PCR. If you are mapping competitive coverage or planning a renewal, it helps to have the rulebook nearby. EPD Directory maintains a live index for seating PCRs that is useful for quick checks (EPD Directory, 2026).
The broader seating wave
If your portfolio mixes seating brands or you want a pulse check on who is publishing, we covered recent releases from new and established players in task seating here: Congrats SitOnIt: first EPDs up the seating game.
Bottom line for January 2027
The two NSF Aeron EPDs will sunset on January 27, 2027, yet replacement Aeron declarations are already available and valid to April 29, 2031 via the International EPD System, so specifiers should simply update submittals to the newer IDs. That keeps Herman Miller’s flagship chair fully spec‑eligible, avoids admin churn, and prevents competitive leakage to other task chairs with active EPDs. Easy win, no drama. And yes, keep an eye on any region‑specific variants so you do not mix EU and NA copies by accident. It sounds basic, but it trips teams up more often than it should, unfortuntely.
