Publications

NatHERS for existing homes Guidance Note.  This document supports assessors to navigate the assessment process. It outlines mandatory and recommended steps, offering general guidance to assessors undertaking an existing homes assessment. The NatHERS for existing homes Guidance Note supports the NatHERS for existing homes Technical Note.

Existing Homes Guidance Note (pdf)

This policy sets out the requirements for, and role of, mentors in improving the performance of NatHERS for existing homes assessors. This policy details:

• the responsibilities of mentors
• the mentoring process
• how mentors are appointed
• scenarios where mentoring is provided.

NatHERS for Existing Homes Mentoring Policy (pdf / docx)

NatHERS for existing homes Technical Note (Tech Note). This document sets out the requirements that must be followed when conducting a NatHERS for Existing Homes assessment. Adherence to this Technical Note ensures that NatHERS for existing homes assessments are consistent and can be audited for assurance purposes.

Existing Homes Technical Note (pdf)

This policy describes the character checks performed as part of the assessor accreditation process for NatHERS for existing homes. It outlines the process for both the applicant and the accreditation provider.

NatHERS for Existing Homes Assessor Character Check Policy (pdf / docx)

This policy describes how complaints about NatHERS can be made and how they are managed. It establishes the processes and timeframes that the NatHERS Administrator and delivery partners will follow if you make a complaint.

Complaint Management Policy (pdf / docx)

This policy outlines the requirements for NatHERS for existing homes assessors to manage conflicts of interest. It outlines the types of personal interests they must declare and their responsibilities for managing any conflicts as a condition of accreditation. 

NatHERS for Existing Homes Assessor Conflict of Interest Policy (pdf / docx)

This strategy establishes the approach to managing assessor errors, non-compliance, fraud, or other misconduct as part of NatHERS for Existing Homes. The strategy: 

• is transparent, impartial, and performed by competent people
• provides timely, credible information to inform decisions
• is adaptable to changes in the scheme; and
• complements but does not duplicate the activities of commonwealth, state or territory regulators or other compliance and enforcement agencies. 

NatHERS for Existing Homes Assurance Strategy (pdf / docx)

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. 

• NatHERS Information Collection, Storage and Dissemination Policy (pdf / docx)

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.

Current Version

Whole of Home National Calculations Method (PDF)

Whole of Home National Calculation Method Appendices (MS Excel)

Superseded 

Whole of Home National Calculations Method  - Superseded (PDF)

Whole of Home National Calculation Method Appendices - Superseded (MS Excel)

Please contact the NatHERS Administrator via admin@nathers.gov.au if you have any questions.

This code of practice describes the key requirements which NatHERS for existing homes assessors must comply with to maintain their accreditation. It ensures that accredited assessors act with an appropriate level of care, due diligence, and professionalism.

NatHERS for Existing Homes Assessor Code of Practice (pdf / docx)