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 rating methods, you will need to decide to which tool best meets your needs:

AccuRate logo    BERS Professional logo    Firstate5 logo

The formal qualification for assessors using this software is the Certificate IV in NatHERS Assessment (CPP41212). Further details can be found on our Assessor accreditation and qualifications page.

NatHERS software technical notes

Modern house at night

To ensure ratings are conducted consistently, assessors using NatHERS rating methods must follow the NatHERS Software Technical Notes when undertaking thermal performance assessments.

Ratings undertaken for regulatory purposes must also satisfy relevant state and territory legislation. This legislation overrides the Technical Notes in the event of any inconsistency.

The NatHERS Software Technical Notes are a valuable resource for NatHERS Accredited Assessors using NatHERS Accredited Software. The Technical Notes provide the most up-to-date information on the correct processes for:

  • Modelling new and existing buildings
  • Zoning of conditioned spaces
  • Modelling windows, glazing and insect screens
  • Correct design documentation requirements and more

To assist in conducting energy ratings, the Zoning Guide provides illustrated examples of how to zone various spaces, while the Assessor Questions and Answers document provides solutions for common issues and queries.

The current version of the NatHERS Software Technical Notes can be found here:


Technical Notes for previous versions of NatHERS software (now superseded) can also be accessed here:

NatHERS worked examples

To help assessors and students develop consistent and reliable modelling practices, a collection of fully worked examples for all accredited software packages is available at