105 HERS Rating Software

105.1 Accreditation

All HERS Software Tools shall be accredited by RESNET based on compliance with the test criteria specified in the most current version of RESNET Publication 002 and Chapter 3 of MINHERS

105.1.1 Changes to the requirements of publication 002 shall be governed by RESNET’s Standards Development Committee 300.

105.2 Techincal Appeals

105.2.1 Technical appeals for software tools shall be submitted to the RESNET Standing Software Consistency Committee (SCC) for resolution. Software accreditation shall not be delayed due to a Software Technical Appeal.

105.3 Version Requirement

For the purposes of conducting Home Energy Ratings, as defined in these Standards, all users of RESNET Accredited Software shall use the version of one of the RESNET Accredited Software Tools listed in the “National Registry of Accredited Rating Software Programs” posted on the RESNET website that matches the requirements of the current RESNET HERS or the Third Party Energy Efficiency Program the rating is generated for. RESNET requires the most current version of one of the RESNET Accredited Software Tools.

105.4 Rating Software Changes

When a new version of an Approved Software Rating Tool is released, the new version shall be used for Ratings on Dwelling Units or Sleeping Units with a Building Permit Date on and after the following timelines:

i. The 6-month anniversary of the software release date,

ii. If the software version was released in response to an amendment, the Mandatory Compliance Date determined pursuant to section 502.5 and 502.7,

iii. A date specified by the RESNET Board of Directors.

Alternatively, the date of the Certified HERS Rater’s or RFI's first site visit, the date of the application of the permit, or the date of the contract on the home, or the date of an application for low-income tax credits or government administered competitive financing for a project meeting the State or local government definition for low income or affordable housing are permitted to be used as the Building Permit Date.

HERS Update to Standard ANSI/RESNET/ICC 301-2019

MINHERS Addendum 42 adopted Standard ANSI/RESNET/ICC 301-2019 to replace Standard ANSI/RESNET/ICC 301-2014 as the basis for calculation of the HERS rating. Addendum 42 currently allows voluntary use of RESNET accredited software based on Standard 301-2019 and will require use of Standard 301-2019 on January 1, 2022. See the section 502.3.2 definition for Mandatory Compliance Date.