Whole Of Home Assessments

NatHERS Whole of Home considers the energy used by heating, cooling, cooking and plug-in appliances as well as hot water systems, lighting and pool and spa equipment, alongside the existing thermal star rating.

Understanding the Whole of Home performance rating

The NatHERS Whole of Home assessments use the energy value of a dwelling to determine its performance and assign a rating from 0 to 150. Higher ratings correspond to a lower energy value, and better Whole of Home performance. A Whole of Home score of 100 equals a net zero energy value, thus any rating above this means there is a positive impact on the net cost of societal energy use.

Table 12-2: checklist – information to collect for Whole of Home rating