Ever wondered why homes talk in stars? No, not the Hollywood kind, but the kind that tells you if your home is a cosy nest or a money-guzzling icebox. Let’s dive into the world of NatHERS star ratings.
What Are NatHERS Star Ratings?
The Nationwide House Energy Rating Scheme (NatHERS) hands out star ratings (between 0 and 10) to inform you how thermally efficient, or energy-hungry, your place is. The higher the stars, the comfier and less costly it is to run your home.
0 stars? means your home behaves like a tent.
7 stars? You’re doing the essentials.
10 stars? Basically means you can easily stay comfy year-round.
Why Stars Matter (Beyond Feeling Like a Celebrity)
Comfort that doesn’t cost the earth: Higher star ratings mean homes stay more stable in temperature (less heating in winter, less cooling in summer).
In Victoria, a 7-star rating has been the minimum standard since May 2024. It can slash energy use for heating and cooling by up to 25%.
Better efficiency equals fewer emissions, a win for your wallet and the world.
How Stars Are Calculated: Science!
NatHERS uses regulators-accredited software powered by CSIRO research. It simulates how your home performs across seasons, based on orientation, materials, windows, insulation, and local climate factors.
Victoria, South Australia, and Western Australia now require at least a 7-star rating for new builds under the National Construction Code.
Stars vs. Appliances: Different Universes
Ever compare fridges by stars? That’s a different kind of star system, focused on appliances. NatHERS only rates building efficiency, not appliances using up all the energy after installation.
What Does This Mean for You, and ThermaHome?
Here’s where it gets fun:
Renovating a steel-framed or timber home? A high star rating isn’t out of reach.
Underfloor or ceiling insulation can dramatically boost your home’s thermal efficiency.
ThermaHome installs premium insulation solutions that help you climb star ratings, and savings. 😉
With about 70% of Aussie homes built before 2003 averaging only 1.8 stars upgrade opportunities are everywhere.
Think of star ratings as your home’s thermal Tinder profile. Going from 2 stars to 7 stars? You’ve just become the hot (and cool) property on the block. With ThermaHome’s insulation expertise, we help homes swipe right on comfort, efficiency, and lower bills.
So, ready for your home to shine brighter than the rest?