How Much Does It Cost to Run a Fridge? Understanding Your Fridge's Electricity Use
Your fridge is the one appliance that never turns off. It runs 24 hours a day, 7 days a week, 365 days a year. That means it's one of the most significant contributors to your household electricity bill — and understanding its running costs helps you make a smarter buying decision.
How Is Fridge Energy Use Measured?
Fridges are rated in kilowatt-hours per year (kWh/year). You'll find this figure on the yellow energy star label attached to the fridge, or in the product specifications.
To calculate annual running cost:
Cost = kWh/year × electricity rate ($/kWh)
In Sydney, residential electricity rates range from approximately 25c to 35c per kWh depending on your plan and retailer. We'll use 30c for our examples.
Typical Annual Electricity Use by Fridge Type
- Small fridge (200–300L): 200–350 kWh/year = $60–$105/year
- Medium fridge (400–500L, top/bottom mount): 300–450 kWh/year = $90–$135/year
- Large French door/side-by-side (550–700L): 400–600 kWh/year = $120–$180/year
These figures are approximate. A newer high-efficiency model uses less than an older low-efficiency model of the same size.
How the Energy Star Rating Affects Costs
A 1-star difference in energy rating roughly translates to 10–15% difference in running costs. Over a 10-year lifespan:
- A 2-star 450L fridge might cost $1,500 in electricity
- A 4-star 450L fridge might cost $1,100 in electricity
The more energy-efficient fridge may cost $200 more upfront but saves $400 over its life. For a primary fridge in a family home, this calculation often justifies buying higher-rated models.
Factors That Increase Running Costs
- High ambient temperature: A fridge in a warm garage works harder than one in an air-conditioned kitchen. Western Sydney garages in summer can exceed 40°C, significantly increasing running costs.
- Door seals: Worn or damaged door seals let cold air escape. Check seals annually — a simple $10–20 seal replacement can reduce running costs noticeably.
- Overpacking: Packing a fridge too full restricts air circulation and causes the compressor to run more.
- Coil dust: Dusty condenser coils at the back or bottom reduce efficiency. Clean them annually with a vacuum.
- Setting: Every degree below 4°C (the ideal fridge temperature) uses more electricity for no food safety benefit.
Is It Worth Replacing an Old Fridge?
An old, inefficient fridge can cost $300–$500/year more to run than a modern model. If your fridge is 10+ years old, the running cost savings of a new one may justify replacement within 2–3 years, particularly if the new model is second-hand and priced accordingly.
Visit Oceania Appliances
We carry a range of energy-efficient fridges with clear energy ratings. We're happy to help you calculate running cost comparisons before you buy.
Oceania Appliances
2/14 Centre Place, Wetherill Park NSW 2164
Phone: 0481 243 211
Open 7 days, 10am – 8pm
Free delivery across Sydney