Zoned Energy Rating Labels (ZERLs) help you choose the right system for your location, avoid a surprise electricity bill and choose your appliance based on its energy efficiency, which helps reduce electricity consumption and greenhouse gas emissions. When shopping for an air conditioner, you’ll notice a colourful energy label on every unit. These are Zoned Energy Rating Labels (ZERLs). They look a bit like the old star labels, but give you more accurate information about energy use. Here’s how to read them, why they matter, and how they can help you pick the right cooling for your home.
How Do ZERLs Work for Air Conditioners?
Each label has:
- Stars for each zone – You'll see separate star ratings for different regions of Australia. More stars mean the air conditioner uses less energy in that specific region.
- Estimated annual energy use (kWh) – This number shows hoe much electricity the unit is expected to use over a year in each climate zone. Lower kWh means lower power bills.
- Cooling and heating efficiency ratings – If the air conditioner provides both cooling and heating, the label lets you compare how efficiently it performs in each mode.
Together, this information gives you a much clearer idea of real-world running costs, helping you choose an air conditioner that's best suited to your region and could save you money over time. The Energy Rating Label is mandatory for appliances (fridges, washing machines, TVs, air conditioners) sold in stores, but not for those sold online.
Why Do ZERLs Have Climate Zones?
Australia has extreme differences in climate. A system that performs well in Brisbane may not run as efficiently in Hobart. By showing ratings for three zones, ZERLs let buyers choose based on where they live.
- Hot zone – suited for tropical and desert climates.
- Average zone – covers much of Australia’s temperate cities.
- Cold zone – for cooler southern regions and inland areas.
How to Use ZERLs When Buying an Air Conditioner
When comparing models:
- Find your zone on the map printed on the label.
- Compare the stars for that zone across different models.
- Check the kWh figure to estimate running costs.
- Balance upfront price with long-term savings, a slightly more expensive but efficient unit often saves more over time.
ZERL vs Traditional Energy Star Labels
Older labels only gave a single star rating, which often didn’t reflect real performance in your climate. ZERLs fix that by providing climate-specific data, making it easier to compare units fairly. For buyers, this means fewer surprises on your energy bill.
Also, due to changing efficiency standards, a 6-star rating from today may not be directly comparable to a 6-star rating from years ago.
The Bottom Line
ZERLs take the guesswork out of choosing an air conditioner. By showing how units perform in different climates, they help you compare models more fairly and predict energy consumption figure and running costs more accurately.
If you’re buying a new system this summer, keep an eye on the new energy rating label, and check out Bi-Rite’s full range of air conditioners to find one that suits your home and climate.
FAQ: Zoned Energy Rating Labels
What is a Zoned Energy Rating Label (ZERL)?
An Energy Rating Label shows how much energy an air conditioner and other appliance use in different Australian climate zones.
How do ZERLs work for air conditioners?
They display separate star ratings and kWh usage for hot, average, and cold weather zones.
Why do ZERLs have climate zones?
Because air conditioners work harder in some regions. ZERLs make efficiency comparisons fairer.
How can I use ZERLs when buying an air conditioner?
Match your location to the right zone, then compare stars and kWh to see which unit saves more.
What’s the difference between ZERLs and old labels?
Old labels gave one rating for the whole country. ZERLs are zone-specific, making them more accurate.
