PRESS RELEASE

    IAPMO Makes Tentative Interim Amendment (TIA) Available for Public Comment

    IAPMO Makes Tentative Interim Amendment (TIA) Available for Public Comment

    Ontario, Calif. – In accordance with the IAPMO Regulations Governing Committee Projects, IAPMO would like to announce that a tentative interim amendment (TIA) to the 2024 edition of the Uniform Mechanical Code (UMC®) is being submitted for public comment.

    UMC TIA 003-24 revises text in the 2024 edition of the UMC, Table 1102.3 (Refrigerant Groups, Properties, and Allowable Quantities), regarding values for Refrigerant Concentration Limits (RCLs) and Lower Flammability Limits (LFLs) of listed refrigerants. The comment form is located at:

    https://codes.iapmo.org/docs/2024/UMC/TIA/Submit%20Comment%20Form%20(TIA%20003-24).pdf

    IAPMO invites all interested parties to review the proposed TIA on the IAPMO website under Uniform Mechanical Code/Proposed TIAs and respond by filling out the comment form.

    The deadline to submit comments is Sept. 5.

    Completed forms may be emailed to Taylor Duran, the UMC staff liaison, at taylor.duran@iapmo.org.ilable for Public Comment

    Pacific Institute Report Recommends IAPMO’s Water Demand Calculator as a Key Strategy for National Water Efficiency

    04 November 2025

    Ontario, California — IAPMO®, a global team of experts engaging industry and government for a safer built environment, is proud to announce that its Water Demand Calculator® has been featured as a key recommendation in the Pacific Institute’s new landmark report, “Untapped Potential: An Assessment of Municipal and Industrial Water Efficiency Potential in the United States.”

    Blueprint for Progress: IAPMO at the ANSI Innovation Summit Demonstrates How Codes and Standards Advance U.S. Competitiveness and Public Health

    21 October 2025

    IAPMO® is proud to be a diamond sponsor and administrating organization at the 2025 ANSI Innovation Summit this week. Formerly World Standards Week, the ANSI Innovation Summit is an annual event that convenes the Institute's members and private- and public-sector stakeholders from across the standards and conformity assessment communities to come together, learn from each other, and showcase their important work. 

    IAPMO Celebrates 10 Years of WorldSkills Global Industry Partnership

    16 October 2025

    IAPMO®, a global team of experts engaging industry and government for a safer built environment, and its charitable foundation, the International Water, Sanitation and Hygiene Foundation (IWSH®), are proud to celebrate 10 years as a WorldSkills Global Industry Partner. IAPMO and IWSH celebrated the milestone this week at the annual General Assembly of WorldSkills International Members in Dubrovnik, Croatia.

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