Energy efficient homes are sometimes called ‘smart’ homes or ‘sustainable’ homes. The demand for energy efficient homes is booming in Australia. The reasons for this trend include growing environmental awareness and rising energy costs. Why should you invest in an energy efficient home? Increased Comfort A well-designed energy efficient home requires little energy to make it comfortable all year round. Utilising passive solar design principles, insulating roofs and walls and the installation of window seals to prevent draughts eliminates the need for heating