Seven-star energy-efficient homes use about 25 per cent to 30 per cent less energy than six-star homes.
Newly built homes will have a minimum seven-star energy rating under changes agreed last week to the National Construction Code that experts say will cut home energy bills. “We all want homes that are more comfortable to live in, have lower energy bills and are better for the environment,” Green Building Council of Australia chief executive Davina Rooney said.She said there are likely to be more homes with light-coloured roofs, insulation and better quality windows under the change, but for some homes it could be as simple as swapping the design to upgrade it from six to seven stars, for example by moving a garage away from the north wall.
She has seen owners fall in love with a design, build it on their block without thinking about the orientation, and realise the only way to make it more energy-efficient is to throw cash at it such as by upgrading insulation.
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