1st of May energy efficiency assessment requirement changes(April 01, 2019)
The inclusion of separate heating and cooling loads will mean that buildings will need to meet the six-star standard (or equivalent) as well as the prescribed heating and cooling load limits caps. Conservative estimates suggest that this will impact 10 per cent of house designs in both cool and warm climates. Revision of the existing reference building verification method (V18.104.22.168), including clarification of the software tools that can and cannot be used to undertake modelling for this method, this will impact house designs in Western Australia, in particular because this has been a common energy efficiency compliance path used due to the predominant use of cavity masonry construction. There is a transition period until the 30th of April 2020 for these changes to take effect.