Using NatHERS Accredited Software
There are three software tools accredited under NatHERS, each with different user interfaces and functions. If you are completing energy ratings in accordance with NatHERS methods, you will need to decide which tool best meets your needs:
The formal qualification for assessors using NatHERS software is the Certificate IV in NatHERS Assessment (CPP41212). Further details can be found on our Assessor accreditation and qualifications page.
NatHERS Technical Note
To ensure ratings are conducted consistently, assessors using NatHERS accredited software tools must follow the NatHERS Technical Note when undertaking thermal performance assessments.
Ratings undertaken for regulatory purposes must also satisfy relevant state and territory legislation. This legislation overrides the NatHERS Technical Notes in the event of any inconsistency.
The NatHERS Technical Note provides the correct processes for modelling new and existing dwellings using NatHERS accredited software tools. The processes outlined in the NatHERS Technical Note include:
- Data entry
- Climate, exposure, ground reflectance and orientation
- Windows and doors
- Ceilings and roofs
- Finishing the assessment
The current version of the NatHERS Technical Note can be found here:
Technical Note Archive
Superseded Technical Notes and other complimentary documents for reference can also be accessed here:
- NatHERS Technical Note (Version May 2019)
- Technical Note 1.2
- Technical Note 1.1
- Technical Note 1.1 Addendum
- Technical Note 2
- Technical Note 2 Addendum
- Zoning Guide for Technical Note 1.2
- Technical Note 1.2 Assessor Questions and Answers
- Guidance Note 1: Guidance for treatment of window value discrepancies between the custom windows library and Window Energy Rating Scheme
NatHERS Assessor Handbook
The NatHERS Assessor Handbook has been developed by the NatHERS Administrator in conjuction with industry experts. It is designed to help assessors navigate the NatHERS assessment process and provides additional guidance to support the NatHERS Technical Note. View the NatHERS Assessor Handbook.
For more information about how NatHERS works, see the NatHERS Fact Sheets.