Australia's energy star rating system makes choosing an energy-efficient fridge straightforward — in theory. In practice, the number of stars needed depends on several factors. Here's what actually matters.
How the Australian Energy Star Rating Works for Fridges
Australian fridges display an energy star rating between 1 and 10 stars (or even more with 'super efficient' ratings). The rating compares the appliance to others of similar size and type. A higher star rating means lower energy consumption and a lower electricity bill.
Critically: the star rating is relative to the category, not absolute. A 4-star 500L fridge uses more electricity than a 4-star 300L fridge, because the star rating is based on how efficient it is for its size.
What Does Each Star Level Cost to Run?
Using Sydney's approximate electricity rate of $0.30/kWh as a benchmark:
- 2-star fridge (600L) — approximately $150-200/year to run
- 3-star fridge (500L) — approximately $80-120/year to run
- 4-star fridge (500L) — approximately $60-90/year to run
- 5-star fridge (500L) — approximately $45-70/year to run
- 6+ star fridge (500L) — approximately $30-55/year to run
These figures vary significantly by specific model, climate (Sydney vs Brisbane vs Melbourne), and usage patterns.
Payback Period: Does a Higher Star Rating Pay Off?
The price premium for a 6-star fridge over a 3-star equivalent is typically $200-$400. The annual saving might be $40-60. That means a 4-7 year payback period, assuming electricity prices stay constant (they haven't been going down).
Given fridges last 10-15+ years, the higher star rating generally does pay off over the appliance's lifetime, especially as electricity prices rise.
What Star Rating Is Recommended?
For most Australian households, aim for 3.5 stars or higher. The energy savings are meaningful without requiring a large premium. For large 600L+ fridges that run 24/7, pushing for 4-5 stars is worth the investment given the higher baseline consumption.
Other Factors That Affect Fridge Running Costs
- Placement — Fridges next to ovens or in direct sunlight work significantly harder. Place in a cool, well-ventilated spot.
- Temperature settings — Fridge at 3-4°C, freezer at -18°C is optimal. Colder wastes energy.
- Door habits — Frequent door opening dramatically increases running costs
- Age — A fridge older than 10 years likely uses twice as much electricity as a modern equivalent
Find Energy-Efficient Fridges at Oceania Appliances
We stock energy-efficient fridges across all sizes and star ratings. Shop at oceaniaappliances.com.au/collections/fridges. Free Sydney delivery.