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Energy ratings, construction codes and standards

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Nationwide House Energy Rating Scheme (NatHERS)

The Nationwide House Energy Rating (NatHER) is a Star Rating from 0 to 10 that measures how energy efficient a house is, based on its design. The rating applies to the building envelope: the roof, walls, floor and windows. Houses with higher HERs are more naturally comfortable in winter and summer, and therefore easier and cheaper to heat and cool.

Since 2013 new Victoria apartments must achieve an average 6-star rating collectively for all sole-occupancy units (SOU) and not less than a 5-star rating for each individual SOU. New standalone homes must achieve at least a 6-star rating. To ensure you future proof your asset, it is strongly recommended you exceed today's minimum standards. 

Compliance with these standards is managed by the Victorian Building Authority (VBA).

Green Building Council Australia Green Star rating

Green Star is an internationally-recognised sustainability rating system for multi-unit residential apartments, which considers factors such as the indoor environment quality, transport, energy use, water use and materials used to build the property. Visit the Green Star Project Directory for more information.

National Construction Code

The NCC requires minimum Energy Efficiency performance requirements for new buildings. The NCC is an initiative of the Council of Australian Governments developed to incorporate all on-site building and plumbing requirements into a single code. The NCC sets the minimum requirements for the design, construction and performance of buildings throughout Australia.

Questions about the NCC and other codes should be directed to the Australian Building Codes Board and the Victorian Building Authority.

National Australian Built Environment Rating System (NABERS)

The National Australian Built Environment Rating System (NABERS) Home Rating Calculator is an easy-to-use web-based tool for comparing the energy and water use of an existing home to that of an average household.

Window Energy Rating Scheme (WERS)

The Window Energy Rating Scheme (WERS) rates a window's glazing and frame energy performance in the form of stars. This will help you to compare the relative energy performance of different windows and decide which type is best for your needs.

Insulation standards and R values

Various Australian Standards and National Codes of Practice cover the installation of insulation products. For more information on installing insulation visit the Insulation Council of Australia and New Zealand (ICANZ) website. You should also consider recommended R values for Victoria. The higher the R value, the greater the insulating effect and energy savings.

Water efficiency labelling and standards (WELS)

The Water Efficiency Labelling and Standards (WELS) sets out the criteria for rating the water efficiency and/or performance of each WELS product type. The WELS rating is from 1 to 6 stars; the more stars, the more water efficient the product.

Smart Approved WaterMark

Products and services labelled with a Smart Approved WaterMark have been assessed by technical experts to make sure they achieve water savings.

Appliance energy ratings

Appliance energy ratings are an Australian Government requirement on new appliances, making it easy to compare running costs. The lower the energy consumption score, the less electricity the appliance uses, and the cheaper it will be to run.


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