IAPMO, developer of the Uniform Solar, Hydronics and Geothermal Code and Uniform Swimming Pool, Spa and Hot Tub Code, has posted online the 2025 Report on Proposals for the 2027 editions of these prospective American National Standard-designated model codes.
No hardcopies will be printed or distributed. Interested parties are encouraged to download the documents at the following URLs:
USHGC: https://codes.iapmo.org/docs/2027/USHGC/2025_USHGC_REPORT_ON_PROPOSALS.pdf
USPSHTC: https://codes.iapmo.org/docs/2027/USPSHTC/2025_USPSHTC_REPORT_ON_PROPOSALS.pdf
IAPMO will begin the Call for Comments on these documents on Oct. 10, when all suggested code amendments/additions/deletions published in the ROP will be available for public review. The deadline for submission of comments is Jan. 16 at 5 p.m. PST.
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 2027 edition of each code is being developed through a process accredited by the American National Standards Institute.
