NatHERS WHOLE OF HOME

NatHERS (Nationwide house Energy Rating Scheme) Whole of Home ratings provide a rating to show how the home meets or improves on the new NCC (National Construction Code) annual energy use budget which requires consideration of the efficiency of the appliances used in new homes and the impact of solar and batteries.

Adding to the current NatHERS star rating assessment out of ten, the Whole of Home Performance Rating is a separate rating out of 100.

It builds on the thermal performance assessment by providing information about the energy use of the following appliances:

• Heating and cooling

• Hot water systems

• Lighting

• Pool/spa pumps

• Cooking and plug-in appliances

• On-site energy generation and storage.

The rating considers energy used for heating and cooling, and appliances, minus energy generated by solar panels.

While the Whole of Home rating scale ranges from 0 to 100 (where 100 is a net zero energy value home), ratings above 100 are possible. One way that a home may rate over 100 is where a home generates more energy than it uses.