‹ All accredited software tools REM/Rate REM/Rate LLC Accredited versions These versions and modes are accredited for RESNET HERS® Ratings. The building permit dates show the range of permit dates for which each version or mode can be used to submit registered ratings. Updated October 28, 2026. Ongoing no end datePhasing Out end date has not passedHistoric end date has passed Version Mode Building permit dates Status 2025 301-2022 May 7, 2025 – Present Ongoing 2025 301-2019 October 21, 2022 – December 31, 2026 Phasing Out IECC compliance These versions and modes meet the minimum requirements of the ANSI/RESNET/ICC Standard 301 edition (plus addenda) adopted by each edition of the IECC. 2024 IECC compliant Adopts ANSI/RESNET/ICC 301-2022 with Addenda A and B 2025 2021 IECC compliant Adopts ANSI/RESNET/ICC 301-2019 2025202316.3.4 This page lists major versions only, not every update or hotfix, and each release may have its own compliance dates. RESNET recommends using the most current approved version available, consistent with the compliance dates and the requirements of RESNET Standard 105.4. Consult the software developer for the latest version information. A missing update or hotfix does not exempt a Rater from the software version requirements.
