Report on Comments Toward Development of 2021 USHGC, USPSHTC Available for Online Download

The International Association of Plumbing and Mechanical Officials, developer of the Uniform Solar, Hydronics and Geothermal Code and Uniform Swimming Pool, Spa and Hot Tub Code, has posted online the 2020 Report on Comments for the 2021 editions of these prospective American National Standard-designated model codes. The report is on the actions taken by the technical committee accompanied by a ballot statement and one or more comments resulting from public review of the report on proposals.

Interested parties are encouraged to download these documents at the following URLs:



The USHGC and USPSHTC are model codes developed by IAPMO to govern the installation and inspection of solar energy, hydronics and geothermal energy systems, as well as swimming pool, spa and hot tub systems, respectively, as a means of promoting the public’s health, safety and welfare. The 2021 edition of each code, scheduled for publication early next year, is being developed through a process accredited by the American National Standards Institute. The notification of the ROC availability will also be posted in the ANSI Standards Action for public review. The public review deadline is Oct. 26. Comments can be sent to

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