- Owners and Builders
In March, an article was published in the Energy and Buildings Journal considering the effectiveness of NatHERS as a modelling tool to achieve higher energy efficiency and lower running costs for households. The paper, written by Timothy O’Leary, Martin Belusko, David Whaley and Frank Bruno, compared two groups of houses in Adelaide – the first in Mawson Lakes, where the houses were older and had lower star ratings, and the second in Lochiel Park, built between 2010 and 2015, and with a minimum rating of 7.5 stars.
Results showed that on average, the Lochiel Park houses used 60% less heating and cooling energy compared to the Mawson Lakes homes. The paper concluded that, even after taking into consideration variations such as occupant behaviour, NatHERS achieves its objectives and provides environmental and economic benefits to homeowners and builders in terms of energy requirements and performance. The authors also noted the need for further extensive research into national energy consumption.
O’Leary, T et al. 2016 ‘Comparing the energy performance of Australian houses using NatHERS modelling against measured household energy consumption for heating and cooling’, Energy and Buildings vol. 119, pp. 172-182