ABCB 2022 Heating and Cooling Load Limits

As part of the updates to National Construction Code (NCC) 2022, the Australian Building Codes Board (ABCB) is releasing a new Standard for heating and cooling load limits for energy ratings using the Nationwide House Energy Rating Scheme (NatHERS) software.

The new load limits are based on updated data from NatHERS and CSIRO’s Australian Housing Data (AHD) portal. The new dataset has been subject to extensive quality control.

Please note:

  • The new load limits are different to the load limits released as part of the NCC public consultation in August 2021 which are embedded in the NatHERS beta tools. 

  • Read the Thermal Bridging Guidance Note here.

  • The new load limits for ABCB’s new 7-star stringency use the new NatHERS climate files and star bands.

  • Until the software tools are accredited to include the NCC 2022 changes, (stay up to date with software tool accreditation here), the ABCB heating and cooling load limits from their website should be used. 

  • AccuRate will have the updated heating and cooling load limits in their new release in September.