What is expiring in December 2026
As of April 20, 2026, two Groupe SM Tardif EPDs in residential ventilation are approaching their end date on 2026‑12‑17:
- HYGROCOSY BC, humidity‑controlled single‑flow exhaust ventilation unit for dwellings.
- HYGROCOSY BC‑FLEX, the flexible‑install variant of the same hygro‑regulated VMC concept.
Both sit in the HVAC family and were published through the French PEP/INIES ecosystem. If either goes dark, spec teams that require a current EPD will have to assume a conservative impact or choose an alternative.
Are replacements live yet
We do not see a like‑for‑like renewal posted for HYGROCOSY BC or HYGROCOSY BC‑FLEX. A closely related file exists for HYGROCOSY BC‑FLEX+ with a later validity, but that is a different SKU and not a direct substitute in many specs. Translation for bid day: unless an updated declaration for the exact models lands before December, there is a gap forming.
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What that means for specification
EPDs typically renew on a five year cadence. When one expires, the product does not vanish, yet on projects that tally embodied carbon or pursue LEED v5 materials credits, a lapsed declaration can push the product out of contention because the team must apply more pessimistic defaults. That is avoidable with timely renewal. Think of it like your passport the week before a flight.
Likely alternatives specifiers will reach for
If HYGROCOSY BC or BC‑FLEX is not renewed by December, expect attention to shift to current EPDs in the same ventilation use‑cases.
- Aldes EasyHOME Hygro series. Aldes publishes product‑specific PEP files across EasyHOME variants that cover humidity‑controlled single‑flow VMC for dwellings. See Aldes’ public PEP overview and product links, which confirm current coverage for EasyHOME Hygro families (Aldes, PEP program page).
- Systemair SAVE VTR residential air‑handling units. Balanced ventilation rather than hygro‑exhaust, yet commonly considered in the same early design conversation and supported by active EPDs via EPD Norway.
- Swegon GOLD and SILVER C RX air‑handling units. Also balanced systems with active EPDs published in the International EPD System.
Model‑to‑model alignment on flow rates, external pressure, filtration and controls still matters, so always check the duty points before swapping. But with current declarations in hand, these portfolios will look safer on carbon‑accounted jobs late this year.
Renewal timing that actually works
Eight months seems generous until data requests start ricocheting between product, operations, and suppliers. The smoothest renewals kick off now with two tracks in parallel. One track validates the reference year and utility datasets. The other aligns on the PCR and program operator to remove late‑cycle surprises. Teams that sequence those steps well keep engineering focussed on engineering, not paperwork.
Where to watch for updates
Groupe SM Tardif’s corporate site is here for general context: https://groupesmtardif.com/en/. We could not locate a public EPD listing page on their site at the time of writing. If a renewal posts for HYGROCOSY BC or BC‑FLEX ahead of December, that instantly stabilizes spec eligibility.
Bottom line for manufacturers
If a product lives in competitive categories like residential ventilation, an EPD expiring on 2026‑12‑17 is a commercial risk, not just a compliance footnote. Lock the renewal plan now. That way the sales team spends Q4 talking performance and availability, not apologizing for a lapsed declaration that should’ve been handled weeks earlier. And yes, calendar math has a habit of biting, dont wait.
