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Do you use NatHERS software for energy ratings
In this article
With various states and territories adopting the new NCC 2022 energy requirements at different times, your project may be required to use a particular version of NatHERS accredited software depending on the local transitional arrangements.
Which software do I need to use for NCC 2019 compliance?
The correct software for NCC 2019 can be identified based on Chenath Engine v3.21.
You must also ensure you are producing thermal-only NatHERS certificates, based on NatHERS Technical Note June 2019, and the relevant heating and cooling load limits and elemental requirements (where applicable) from NCC 2019.
The versions of NatHERS software for NCC 2019 compliance are:
- AccuRate Sustainability 2.4.3.21 SP1
- BERSPro Version 4.4.1.5
- FirstRate5 Version 5.3.2bHero Version 3.0.1 up to Version 3.1
- Note : Hero Version 3.1 allows switching between the old v3.21 and new v3.22 Chenath engines – make sure you select v3.21 for NCC 2019
Which software do I use for NCC 2022 compliance?
If the NCC 2022 energy efficiency provisions apply to your project, you will need to use the updated NatHERS software. This software can be easily identified because it will include whole-of-home functionality and be based on Chenath Engine v3.22 or v3.23.
Compliant software allows you to generate a NatHERS certificate that includes whole-of-home (except in NSW and NT), using NatHERS Technical Note September 2023 and the heating and cooling load limits and elemental requirements (where applicable) of NCC 2022.
The versions of NatHERS software for NCC 2022 compliance are:
- AccuRate Sustainability 2.4.3.22 or later
- BERSPro Version 5.1.5 or later
- FirstRate5 Version 5.5.3 or later
- Hero Version 3.1 or later
- Note : Hero Version 3.1 allows switching between the old v3.21 and new v3.22 Chenath engines – make sure you select v3.22 for NCC 2022
Using NatHERS software in NSW and NT
In NSW, BASIX is adopted in place of a NatHERS whole-of-home calculation. In the NT there is no mandatory whole-of-home energy assessment required.
All updated NatHERS tools are currently accredited for thermal rating certificates and can be used in NSW and NT.
For BASIX compliance, the thermal rating can be carried out in updated NatHERS accredited software, but the whole-of-home energy compliance must be completed within the BASIX Energy tool.
Which version of NCC energy efficiency requirements apply to my project?
Different states have different adoption dates, implementation frameworks and transitional arrangements.
The following table outlines the adoption arrangements (accurate as of 18 October 2023). As adoption and transitional arrangements are subject to change, it is recommended you reconfirm this information before proceeding with your project:
| State/Territory | NCC 2019 | NCC 2022 |
| New South Wales | Projects where the BASIX certificate was generated prior to 1 October 2023 and DA/CDC was applied for within the 3-month validity period. Projects granted transition for pre-existing contract prior to 1 October 2023. Modifications to pre-existing BASIX certificates for the above projects during or after DA assessment. | Projects where the BASIX certificate was generated on or after 1 October 2023, and not granted transitional approval. |
| ACT | Projects with building approvals determined on or before 14 January 2024. | Projects with building approvals determined from 15 January 2024. |
| Victoria |
Projects where the building permit is issued prior to 1 May 2024. Projects where substantial progress on the design was undertaken prior to 1 May 2024, per Section 10 of the Building Act (relevant building surveyor must make a written request access to the NatHERS Chenath v3.21 software). |
Projects where a building permit is issued after 1 May 2024 and the Section 10 allowance does not apply. |
| Queensland |
Projects where the building permit application is lodged prior to 1 May 2024 Projects approved for the ‘substantial progress’ allowance per 37(1)(d) of the Building Act 1975. |
Projects where a building permit is applied for from 1 May 2024, and the ‘substantial progress’ allowance does not apply |
| South Australia |
Projects prior to 1 October 2024. |
Projects from 1 October 2024. Transitional concessions to be determined. |
| Western Australia |
Projects prior to 1 May 2025. |
Projects from 1 May 2025. Transitional concessions to be determined. |
| Northern Territory |
Projects prior to 1 October 2023 apply BCA 2009 (5-stars). |
Projects from 1 October 2023 apply 5-stars, optional whole-of-home requirement. |
| Tasmania |
Retaining NCC 2019. |
N/A |
Where can I get more information?
The NatHERS administrator has created a webpage to publish updates on the accredited software tools. This includes a table of which tools apply to NCC 2019 vs NCC 2022 compliance; and the status of the new NCC 2022 tools as new features become accredited.
For further information including adoption and transition arrangements in your jurisdiction, HIA has a dedicated NCC 2022 hub page to support industry in navigating the changes.
To find out more, contact HIA's Building Services team.
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