The 2022 edition of the National Construction Code introduced the most significant changes to residential energy efficiency requirements in a decade. Understanding what has changed is essential for every new home and multi-residential project in Victoria.
The Move to 7 Stars
From May 2023, all new Class 1 (houses and townhouses) and Class 2 (apartments) buildings in Victoria must achieve a minimum 7-star NatHERS rating, up from the previous 6-star requirement.
Whole of Home Energy Budget
NCC 2022 introduces a "Whole of Home" energy use budget that includes the energy consumption of fixed appliances — hot water systems, pool and spa equipment, and on-site renewable generation.
- Hot water systems included in energy budget
- Solar PV generation counts as a credit
- Pool and spa equipment included
- Heat pump systems strongly encouraged
Design Strategies for 7 Star Compliance
Achieving 7 stars typically requires good north orientation, adequate insulation, high-performance double glazing, effective shading of north and west-facing glazing, and thorough draught sealing.