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NatHERS Assessor Handbook
The NatHERS Assessor Handbook has been developed by the NatHERS Administrator in conjunction with industry experts.
It is designed to help assessors navigate the NatHERS assessment process, by describing how assessments are to be conducted, including the mandatory and recommended steps of the process.
The handbook provides additional guidance to support the NatHERS Technical Note. It presents information that can assist assessors, regardless of which NatHERS accredited software tool is used. For guidance on undertaking activities in a specific software assessment tool, assessors should contact their software tool provider or consult their relevant software tool manual.
The Whole of Home Guidance Note and Thermal Bridging Guidance Note have been incorporated into the current version of the NatHERS Assessor Handbook. Use the current version to comply to NCC 2022 requirements.
- View the current NatHERS Assessor Handbook - PDF (published 16 April 2024)
- View the current NatHERS Assessor Handbook - Word DOCX (published 16 April 2024)
Previous version:
Use the June 2019 version to comply with NCC 2019 requirements.
- NatHERS Assessor Handbook June 2019 PDF Superseded
- NatHERS Assessor Handbook June 2019 Doc Superseded
Post date18 March 2024 -
NatHERS Whole of Home Guidance Note
The Whole of Home modelling guidance has now moved to chapter 12 of the Assessor Handbook. Please refer to the Handbook for the most recent guidance. The Handbook should be read in conjunction with the NatHERS Technical Note.
Post date12 January 2024 -
NatHERS Trade Mark Guidelines
The NatHERS logo, acronym and rating image are registered trade marks under the Australian Trade Mark Register.
The NatHERS Trade Mark Guidelines outline who is eligible to use these trade marks, the approval process and conditions of use.
NatHERS Trade Mark Guidelines [pdf]
NatHERS Trade Mark Guidelines [docx]
If you are eligible to use the NatHERS trade marks and wish to use them, please complete the form below and email it to: admin@nathers.gov.au. You will receive an automated reply to let you know the team has received the application.
NatHERS Trade Mark Approval Form
Please note: Reviews of most requests take 3-5 working days. The team will reach out during this time if any additional information is required
Post date17 November 2023 -
NatHERS Thermal Bridging Guidance Note
The ‘Thermal bridging guidance note’ can be found in chapter 11 of the Assessor Handbook. Please refer to the Handbook for the most recent guidance. The Handbook should be read in conjunction with the NatHERS Technical Note
- View the 'NatHERS Thermal Bridging guidance note (PDF)' - SUPERSEDED
- View the 'NatHERS Thermal Bridging guidance note (Docx)' - SUPERSEDED
Post date24 October 2023 -
Whole of Home National Calculations Method
These documents outline the method that underpins the NatHERS Whole of Home modules and rating in the benchmark tool (AccuRate Home). It includes information for calculating the energy demand of a home’s energy uses such as heating and cooling appliances, hot water systems, lighting, pool and spa equipment, plug-in and cooking appliances. It also includes information for calculating on-site solar PV generation and storage, and the Whole of Home performance rating.
Whole of Home National Calculations Method (PDF)
Whole of Home National Calculation Method Appendices (MS Excel)
Please contact the NatHERS Administrator via admin@nathers.gov.au if you have any questions.Post date6 June 2023 -
NatHERS Certificate Samples
Across Australia, all Nationwide House Energy Rating Scheme (NatHERS) ratings are presented on a certificate or a non-accredited report.
These show key details about the dwelling, and from 2022, will also provide new information for households on the greenhouse gas emissions of their home, the costs and energy used by all its major appliances, and the impact of solar and batteries.
The certificate will be in one of two formats:
- A certificate that displays the NatHERS logo and can be printed in colour –produced by accredited assessors
- A non-accredited report without the NatHERS logo and only available in black and white – produced by non-accredited assessors.
They have been designed so that owners, builders, certifiers and regulatory authorities can understand and easily check the home’s rating. The QR code, in particular, is important. When scanned, it takes the user to the original certificate that is stored on a secure website.
The data from these certificates go into the CSIRO Australian Housing Data portal (AHD). Furthermore, the fees from the certificates contribute to funding the NatHERS Scheme.
Information for builders, certifiers, regulators and home owners
Changes to the 2022 certificate & non-accredited report
Guide to the 2019 certificate & non-accredited certificate
2022 NatHERS Certificate samples
2022 NatHERS Certificate sample
2019 NatHERS Certificate samples
2019 NatHERS Certificate sample
Old (pre 2019) Universal Certificate information
Post date18 January 2023 -
Guideline for accessing and using NatHERS climate files
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Protocol for Assessor Accrediting Organisations
This Protocol describes the processes that Assessor Accrediting Organisations (AAOs) must undertake once approved by the NatHERS Administrator. AAOs accredit NatHERS Assessors to conduct energy rating assessments for regulatory purposes.
The current version of the AAO Protocol was released in September 2022.
Protocol for Assessor Accrediting Organisation - September 2022 - current
Previous versions:
Protocol for Assessor Accrediting Organisations – October 2021 [PDF 952 KB] - superseded
Protocol for Assessor Accrediting Organisations – March 2016 (July 2020 update) [PDF 718 KB] - superseded
Protocol for Assessor Accrediting Organisations – March 2016 [PDF 429 KB] - superseded
Protocol for Assessor Accrediting Organisations – March 2014 [PDF 411 KB] - superseded
Post date1 September 2022 -
NatHERS Information Policy
This Policy outlines how the Department manages the collection, storage and dissemination of NatHERS information. It is a privacy policy for the purposes of the Department’s activities as NatHERS Administrator.
Post date30 August 2022 -
Stakeholder Consultative Group Terms of Reference and Deed of Confidentiality
The Nationwide House Energy Rating Scheme (NatHERS) Stakeholder Consultative Group (SCG) provides stakeholder and industry feedback to the NatHERS Administrator on the development, implementation and continuous improvement of NatHERS.
The Stakeholder Consultative Group Terms of Reference and Deed of Confidentiality outlines:
- the role of the committee
- accountability and governance arrangements
- membership
- application and appointment process
- Confidentiality, Privacy and Conflict of Interest Deed which must be signed by SCG members.
Documents
Post date6 March 2022
