How to Reduce Fridge Running Costs: 10 Practical Tips

Your fridge is the one appliance that never switches off. It's running 24 hours a day, 7 days a week, 365 days a year. That makes it one of the biggest contributors to your electricity bill. Here are 10 actionable tips to cut your fridge's energy consumption without compromising on food freshness.

Tip 1: Set the Right Temperature

Most people set their fridge colder than necessary. The ideal temperature is:

• Fridge compartment: 3–4°C (not 1–2°C as many people assume)
• Freezer compartment: -18°C

Every degree below the optimal setting increases energy use by 2–5%. Use a fridge thermometer to check your actual temperature — the dial setting and actual temperature often don't match.

Tip 2: Keep the Fridge Full (But Not Packed)

A full fridge retains cold better because the food itself acts as thermal mass. When you open the door, less warm air rushes in because the food mass quickly re-cools the cabinet. However, don't overfill — you need airflow around items for even cooling.

Tip 3: Keep It Away from Heat Sources

Your fridge works harder when surrounded by heat. Keep it:

• Away from the oven and dishwasher (at least 50cm clearance)
• Away from direct sunlight
• With adequate ventilation at the back and sides (usually 50mm minimum)

Moving a fridge from next to the oven to a cooler location can reduce energy use by 10–20%.

Tip 4: Check the Door Seals Regularly

Worn or cracked door seals allow cold air to leak out constantly. Test your seals by closing the door on a piece of paper — if you can pull the paper out easily, the seal needs replacing. A good seal should grip the paper firmly.

Tip 5: Defrost the Freezer Regularly (If Manual Defrost)

If your freezer has manual defrost (no auto-defrost), ice build-up acts as insulation around the cooling elements, making the compressor work harder. Defrost when ice build-up exceeds 5mm.

Tip 6: Don't Put Hot Food Straight In

Putting hot food directly into the fridge forces the compressor to work hard to bring the temperature back down. Let food cool to room temperature (within 2 hours for food safety) before refrigerating.

Tip 7: Keep the Coils Clean

Dust build-up on the condenser coils at the back or bottom of the fridge reduces heat dissipation, forcing the compressor to run longer. Vacuum the coils once or twice a year.

Tip 8: Use an Inverter Model

Older fridges with non-inverter compressors run at full power and then stop — cycling on and off constantly. Modern inverter compressors run at variable speeds, using precisely as much energy as needed. If your fridge is 10+ years old without an inverter compressor, upgrading could cut running costs by 30–40%.

Tip 9: Activate Eco or Energy-Saving Mode

Many modern fridges have an eco or energy-saving mode that slightly raises the set temperature during low-use periods (usually overnight). Enable this if your fridge has it.

Tip 10: Turn Off Extra Features When Not Needed

Ice makers, chilled water dispensers, and display screens all consume additional electricity. Turn off the ice maker if you're not using ice regularly — it can reduce energy use by 10–15%.

When Is It Time to Replace Your Fridge?

If your fridge is 15+ years old, it's likely using 2–3x the energy of a modern equivalent. The Energy Star rating system has improved dramatically, and new inverter fridges are vastly more efficient. If your power bill seems high and your fridge is old, upgrading could pay for itself within 2–3 years in energy savings.

At Oceania Appliances, we carry quality used and refurbished fridges with modern inverter compressors from $249. Free delivery across Sydney. Browse at oceaniaappliances.com.au.