FR5 Software

FirstRate5® house energy rating software

FirstRate5® is an easy-to-use interactive tool with a graphic user interface that enables designers and thermal performance assessors to generate energy ratings for a home by tracing over floor plans. The software integrates the AccuRate calculation engine to estimate the annual heating and cooling energy and can be used to rate an existing design or as an interactive tool to optimise the design beyond compliance.


To become a NatHERS Accredited Assessor you must obtain accreditation through an Assessor Accrediting Organisation (AAO).

The three AAOs under the NatHERS protocol, the Australian Building Sustainability Association (ABSA), Design Matters National  (DMN) and the House Energy Raters Association (HERA), accredit assessors who have fulfilled the requirements of accreditation.

New entrants to the assessor market must complete the Certificate IV in NatHERS Assessment to become a NatHERS Accredited Assessor.

For more information please visit:

Australian Building Sustainability Association (ABSA) - phone 1300 889 438 or email [email protected]
Design Matters National - phone 03 9416 0227 or email [email protected]
House Energy Raters Association (HERA) - phone 07 3209 9093 or 0447 099 392 or email [email protected]


ACT COLA licencing and the use of FR5 Whole of Home 

Existing (Licenced) Building Assessors should be able use the current version of the FR5 thermal tool in combination with the FR5 WoH tool to complete assessments in the ACT.

New applicants -  will need to supply evidence of completing one of the Cert IV in NatHERS (FirstRate5) for Building Assessors mentioned in the Construction Occupations (Licensing) (Qualifications) Declaration 2024 (No 2) and any other usual requirements to become licensed in the ACT before they can use FR5 and FR5 WoH for ACT assessments. See here for how to get an ACT Building Assessor licence Construction licences - Environment, Planning and Sustainable Development Directorate - Planning (

Due to the FR5 software Licence Agreement Assessors are required to use the currently accredited software version to start new assessments, accredited versions can be viewed at

Each software enhancement or bug release comes with a version number change. Training videos are made available to Assessors when software enhancements are released, so assessors can keep their skills up to date.

If you or your building certifier have any questions in relation to the use of FR5 (thermal) or FR5 WoH and ACT COLA licencing, please contact [email protected]


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