Articles in this issue


Welcome to the seventh edition of the NatHERS Star!

This year's achievements

It has been another busy year for the NatHERS Administrator.

NatHERS Stats

Recent data on the NatHERS Certificate.

Fraudulant NatHERS Certificates

Recently the NatHERS Administrator has received, and been following up on, a number of NatHERS Certificates that have been suspected to be fraudulent.

NatHERS Assessor Handbook

The production of the NatHERS Assessor Handbook is well underway.

NatHERS at Sustainable House Day

Sustainable House Day was held on Sunday 16th September 2018.

Modelling obscure glass

It has been brought to the attention of the NatHERS Administrator that there is industry confusion as to how to correctly model obscured glass in NatHERS accredited software tools.

Update on Windows

The NatHERS Administrator continues to actively work on improvements to address concerns regarding windows.

Chenath updates for 2019

The Australian Building Codes Board (ABCB) have approved the following updates for the Chenath engine in line with the 2019 update to the NCC.

Trajectory for low energy homes

Australian governments are advancing the energy performance of residential and commercial buildings through the development of a Trajectory for Low Energy Buildings.

When to contact Who?

A quick guide on where to direct enquiries.

NatHERS myth buster: thermal mass

An insight into the thermal mass formulas used by the NatHERS calculation engine. 


  • Your Home
  • BDAV 2018 Design Awards

NatHERS Assessor Handbook

The NatHERS Handbook is being developed by the NatHERS Administrator in conjunction with industry experts, with progress now well underway. Designed to help assessors navigate the NatHERS assessment process, the Handbook describes how assessments should be conducted and explains the mandatory and recommended steps of the process.

7 of the 10 chapters of the Handbook have now completed a consultation period, and the NatHERS Administrator is currently collating the feedback received, whilst working with the graphic designer to produce the final version for release. It is anticipated the NatHERS Handbook will be released in early in 2019 to align with the release of an updated NatHERS Technical Note and Chenath changes. This release will also align with the NCC update scheduled for implementation from May 2019.

Once published, the NatHERS Handbook will be available on the NatHERS website and communicated to state and territory building authorities, and to assessors through Assessor Accrediting Organisations (AAOs).