These older dwellings are leaky, rely heavily on heating and cooling, and emit more carbon than modern homes. This exacerbates health issues, spikes bills and notches up emissions. “Before time” houses, built prior to the National Construction Code’s introduction of energy standards in 2003, typically score just 1.
“Air leaks in the shell of your home make a massive difference to the amount of energy you use. Australian houses are very leaky by international standards, and it’s very easy, with usually a matter of a few hundred dollars, to dramatically reduce the amount of air leakage,” Edwards says. Like gap sealing, ceiling insulation is another critical factor that maintains temperate comfort and reduces energy consumption by preventing air escaping. A report by the Insulation Council of Australia and New Zealand in 2009 estimated that, prior to 2004, approximately 40% of Australian homes did not have ceiling insulation; it stands to reason that many older homes have very little, if any, insulation.
Trivess Moore, an associate professor at RMIT’s school of property, construction and project management, recommends people start with a An assessment typically costs between $250 and $500, based on the size and location of your home and complexity of the assessment .In advance of an assessment, experts suggest thinking about how you live in your home; consider who spends the most time at home, which spaces you spend the most time in, which rooms receive northern sun, how you use your appliances, and whether you adjust your behaviours or habits based on temperature.
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