Software updates

The National Construction Code (NCC) 2022 energy efficiency changes are being adopted from 1 May 2023.

Each state and territory government may modify the adoption dates or requirements — this helpful table highlights when states and territories are transitioning to NCC 2022.

Changes include an increase to a 7-star minimum thermal rating and the inclusion of a new Whole of Home energy budget, including major fixed appliances and on-site energy generation and storage.

The changes require updates to all NatHERS tools, which are currently progressing through the re-accreditation process.

The NatHERS administrator is working with jurisdictions who have an extended transition to NCC 2022 to support access to older versions of NatHERS as/if required.

Get ready for NCC 2022

NCC2022 includes Thermal (building shell) and Whole of Home regulatory requirements for which NatHERS can be used to demonstrate compliance.

The following table lists software tools which are NatHERS accredited or are undergoing NatHERS accreditation.  The table also list legacy tools available in the marketplace to be used to demonstrate compliance with NCC 2019.

BERS version 5.1.7.940 and AccuRate Home version 1.3.3.23 are now available in the marketplace to produce NatHERS Thermal and Whole of Home regulatory compliant ratings and certificates in accordance with the provisions of NCC 2022. Software tools meeting the provisions of NCC 2022 incorporate:

  1. New climate files and associated starbands.  
  2. New heating and cooling load limits.  
  3. Thermal bridging modelling for steel-framed structures.  
  4. Whole of Home appliance modules: 
  • Heating and cooling and hot water systems;
  • Pool/spa pumps; 
  • Lighting; 
  • On-site energy generation and storage (solar panels and batteries); and  
  • Cooking and plug-in appliances.  

      5. New format thermal and whole of home certificates, stamps and reports.   

The team is progressing other applications for Whole of Home software accreditation and this table will be updated as these progress.

Summary of accreditation status and use of NCC software (unless stated differently by your jurisdiction):

Tool NCC 2019* NCC 2022
AccuRate Home 

AccuRate Sustainability 2.4.3.21 SP1 (Using Chenath v3.21)      

Version v1.3.3.23 (Using Chenath 3.23)

Includes:

  • Thermal ratings
  • Whole of Home ratings 
  • Thermal and Whole of Home Certificates
  • WERSlink – not currently available for regulatory use due to further testing. It will be available for regulatory use in early 2024.
BERS Pro Version 4.4.1.5 (Using Chenath v3.21)

Version 5.1.7.940 (Using Chenath 3.22) 

Includes:

  • Thermal ratings
  • Whole of Home ratings
  • Thermal and Whole of Home Certificates

Excludes:

  • WERSlink (new windows library).

FirstRate5

Version 5.3.2b for Thermal Assessments (Using Chenath v3.21) 

Version 5.5.4 (Using Chenath 3.22) 

Includes

  • Thermal ratings
  • Thermal Certificates

Excludes:

  • WERSlink (new windows library).

Whole of Home Version 1.0.0

Includes

  • Whole of Home rating

Excludes:

  • Whole of Home Certificates 
    Hero Version 3.0.1 up to Version 3.1 (ensure switched to using Chenath v3.21)

    Version 3.1 (Using Chenath 3.22) 

    Includes:

    • Thermal ratings
    • Thermal Certificates

    Excludes:

    • Whole of Home ratings
    • Whole of Home Certificates 
    • WERSlink (new windows library).

    *NCC 2019 will not be updated to include: new climate files or starbands, new heating and cooling loads, Whole of Home, thermal bridging, or WERSlink (new windows library).

    Contact the FirstRate5 teamthe BERS Pro team or the Hero team for more information on specific software and release dates.

    Complying with various software

    NCC 2019 (from 1 October 2023)

    If you are complying with NCC 2019 you must use (unless stated differently in your jurisdiction):

    • accredited software based on Chenath Engine v3.21
    • thermal only NatHERS Certificates
    • NatHERS Technical Note Version June 2019
    • heating and cooling load limits of ABCB Standard 2019.1
    • additional requirements for apartments detailed in clause J0.2 of the NCC 2019 Volume One
    • additional requirements for houses detailed in subclause 3.12.0(a)(i) of the NCC 2019 Volume Two.

    NCC 2022 (from 1 October 2023)

    If you are complying with NCC 2022 you must use (unless stated differently in your jurisdiction):

    • accredited software based on Chenath Engine v3.22 or v3.23, when they become available 
    • the new NatHERS Certificate which includes the Whole of Home rating feature (note an alternate compliance pathway can be used for the Whole of Home assessment)
    • NatHERS Technical Note Version September 2023
    • heating and cooling load limits of ABCB Standard 2022
    • additional thermal and Whole of Home requirements for apartments detailed in Section J2D2 of NCC 2022 Volume One
    • additional thermal requirements and Whole of Home requirements for houses detailed in Specification 42 of the NCC 2022 Volume Two.