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On hot days, most of the heat that gets into our homes is through the windows. On cold days, windows account for almost half the heat loss. High-performance insulating windows have been installed in Australian homes at a fraction of the rates for New Zealand, the United States and the United Kingdom.
Around 40 per cent of household energy use in the average Australian home is for heating and cooling. The result is high power bills.
Better windows are available. Double-glazed and triple-glazed windows offer much better performance, reducing the need to use energy for heating and cooling.
These windows have insulating layers of air between the glass panes.
Max Berghouse
Jennifer Harrison
Jonathan Chrimes