Articles in this issue

Welcome

Welcome to the sixth edition of the NatHERS Star.

Update on windows

The NatHERS Administrator is aware many assessors are frustrated with the current situation regarding windows and have been actively working on improvements to address these concerns.

Chenath updates for 2019

There are a number of updates planned for the Chenath engine, which improve accuracy of ratings and solve some long-lasting issues with the software.

WA climate zones and interactive climate zone map updates

The interactive climate zone map has been updated and can be accessed on the NatHERS website.

NatHERS Assessor Handbook

The production of the NatHERS Assessor Handbook is well underway.

Split heating and cooling loads for NCC 2019

The ABCB recently sought feedback on changes to the NCC 2019 that would set maximum heating and cooling load limits for the NatHERS pathway in the NCC.

Trajectory for Low Energy Homes and NCC 2022

In late 2018 the COAG Energy Council will consider a trajectory for low energy homes, including potential energy efficiency changes for the 2022 update of the NCC.

IN OTHER NEWS

  • BDAV 10-Star Sustainable Design Challenge
  • Appliance Energy Rating Calculator
  • Your Home

Chenath updates for 2019

In line with the 2019 update to the National Construction Code (NCC) there are a number of updates that are planned for the Chenath engine, which improve accuracy of ratings and solve some long-lasting issues with the software. These include:

  • New approaches for:
    • glazed corridors
    • basement carparks in Class 2 buildings
    • double height voids
  • Limestone added to the materials database
  • Improvements to edge batt modelling
  • Updated waffle pod values to represent their true performance

Guidance on how to use the new zones is currently being developed.

These updates will be accompanied by an updated Technical Note and an updated NatHERS Universal Certificate (which is also being updated based on the recent review that is available here)

An updated software accreditation protocol is also being developed to ensure these updates are rolled out uniformly to all tools.