‹ All accredited software tools Ekotrope Ekotrope 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 November 12, 2026. Ongoing no end datePhasing Out end date has not passedHistoric end date has passed Version Building permit dates Status IECC compliance 5.2.3 May 7, 2025 – Present Ongoing 2021 • 2024 5.2.2 May 7, 2025 – March 1, 2027 Phasing Out 2021 • 2024 4.2.3 October 21, 2022 – December 31, 2026 Phasing Out 2021 Show 6 historic versions Version Building permit dates Status IECC compliance 5.2.1 May 7, 2025 – July 6, 2026 Historic 2021 • 2024 5.2.0 May 7, 2025 – March 7, 2026 Historic 2021 • 2024 5.1.0 May 7, 2025 – February 28, 2026 Historic 2021 • 2024 5.0.2 May 7, 2025 – December 9, 2025 Historic 2021 • 2024 5.0.1 May 7, 2025 – November 6, 2025 Historic 2021 • 2024 5.0.0 May 7, 2025 – October 15, 2025 Historic 2021 • 2024 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 5.2.35.2.25.2.15.2.05.1.05.0.25.0.15.0.0 2021 IECC compliant Adopts ANSI/RESNET/ICC 301-2019 5.2.35.2.25.2.15.2.05.1.05.0.25.0.15.0.04.2.34.2.24.2.14.2.04.1.24.1.14.1.0 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.
