Send us a textThis episode breaks down Wisconsin’s new requirement for UL 1738-listed plastic venting systems on gas-fired appliances in commercial buildings. We cover how we got here, what UL 1738 actually is, how DSPS is interpreting “repairs” vs “new systems,” and what this change means in the field.This episode is based on:My continuing-education class on fuel-gas ventingDirect correspondence with DSPS and inspectorsReview of the Wisconsin Administrative Code and DSPS guidanceIndustry technical documentation📘 Wisconsin Code & DSPS ReferencesSPS 365.0501(4) – UL 1738 Requirement https://docs.legis.wisconsin.gov/document/administrativecode/SPS%20365.0501DSPS UL 1738 Slide Deck (Commercial Buildings) https://dsps.wi.gov/Documents/Programs/CommercialBuildings/2021UL1738.pdfDSPS HVAC / Code Adoption Info https://dsps.wi.gov/Pages/Programs/HVAC/Default.aspx🔥 Fuel Gas / Venting StandardsUL 1738 Standard Overview https://www.ul.com/news/ul-1738-and-ulc-s636-venting-systems-and-fuel-gas-codesVenting Reinvented – ICC Article on UL 1738 https://www.iccsafe.org/wp-content/uploads/Venting.-Reinvented-UL-1738-Fuel-Gas-Venting-Systems.pdfSystem 1738 Technical Whitepaper (IPEX) https://ipexna.com/wp-content/uploads/2024/05/whitepaper-usen-ipex-system-1738.pdf⚠️ Safety / Failure Case StudiesPVC Flue Pipe Failure – Case Study (PHCPPros) https://www.phcppros.com/articles/1912-pvc-flue-pipe-failurePolypropylene Venting Failures Whitepaper https://duravent.com/literature/L277_WhitePaper_PolyPro.pdfCPSC CO Incident Investigation Summary https://www.cpsc.gov/s3fs-public/Updated_IDI_review_CO_and_modern_furnaces_and_boilers.pdf(Anecdotal) Aspen CO Fatality Claim https://www.chimneysavers.com/dangers-of-pvc-vent.htmlUL 1738 applicability decision-tree diagram 📫 ContactQuestions? Jobsite examples? Submittal pushback?Comment on YouTube, message through the podcast platform, or email: 📧 [email protected] for listening to Mastering Wisconsin Plumbing. Stay safe, read the book, and I’ll see you in the next episode.Support the show

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