Compare appliances of a similar size and capacity using the Energy Rating Label, including both the star rating and estimated energy use in kWh per year. Multiply the annual kWh figure by your electricity tariff to estimate running costs, then consider the purchase price, expected lifespan and maintenance. Features such as eco modes can reduce consumption, but actual costs depend on how often and how you use the appliance. You can check Australian labels and guidance through the official Energy Rating website.