Understanding Hot Water System Efficiency Ratings

Your hot water system’s star rating directly impacts energy consumption, running costs, and greenhouse gas emissions. Systems with higher star ratings are more efficient, converting a greater proportion of the energy they use into heat. This improved efficiency leads to lower utility bills and a reduced environmental footprint.

Upgrading from a 3-star gas storage hot water system to a 5-star gas instantaneous model can save an average Aussie household up to 180annuallyongasbills. Similarly, electric water heaters, particularly heat pump model solar systems, often achieve over two additional stars. These systems, utilising renewable energy and advanced heat transfer technology, can deliver yearly savings of more than 180 annually on gas bills. Similarly, electric water heaters, particularly heat pump models or solar systems, often achieve over two additional stars. 

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While the initial cost for 5, 6, or 7-star systems may be higher, the significant energy consumption savings over time make them a worthwhile investment. A complete cost comparison, including the purchase price and lifetime operating expenses, helps determine the best option for your needs. Additionally, properly insulating hot water pipes can further enhance efficiency, reducing heat loss and maximising savings. Choosing an energy-efficient system lowers costs and contributes to a more sustainable future.