How to Defrost a Freezer: Step-by-Step Australian Guide
If your freezer has built up a layer of frost or ice, it's time for a defrost. A frosty freezer works harder, uses more energy, and doesn't freeze food as effectively. The good news is that defrosting a freezer is a straightforward job you can easily do yourself. Here's a step-by-step guide from Oceania Appliances.
When Should You Defrost a Freezer?
Defrost your freezer when the frost or ice buildup is around 5–6mm thick. If you let ice build up thicker than this, your freezer has to work much harder to stay cold, which increases energy consumption and can shorten the life of the appliance.
What You'll Need
- Towels and old newspapers (to absorb water)
- A basin or bucket (to collect melted ice)
- A plastic scraper or spatula (never metal, which can damage coils)
- A portable cooler or ice box (to store your frozen food during the process)
Step-by-Step: How to Defrost a Freezer
Step 1: Empty the Freezer
Remove all food from the freezer and place it in a cooler with ice packs to keep it frozen during the process. Use this opportunity to check expiry dates and throw out anything old.
Step 2: Turn the Freezer Off
Either unplug the freezer at the wall, or turn the temperature control to 0 or 'off'. Do not just leave it running during defrosting.
Step 3: Protect Your Floor
Lay old towels and newspapers around the base of the freezer to absorb the water as the ice melts. Place a basin inside to catch drips.
Step 4: Let the Ice Melt Naturally
Leave the freezer door open and allow the ice to melt naturally. This is the safest method. For a moderate frost build-up this usually takes 1–2 hours. Never use a hair dryer, heat gun, or sharp metal tools to speed up the process.
Step 5: Gently Remove Loose Ice
As the ice softens, use a plastic scraper to gently remove loose chunks. Never gouge or stab at the ice, as this can damage the freezer's internal coils.
Step 6: Wipe Clean and Dry
Once all the ice has melted, wipe down the inside of the freezer with a clean dry cloth. Leave the door open for 15 minutes to allow it to air dry completely.
Step 7: Restart and Reload
Turn the freezer back on and allow it to reach its set temperature before returning your food. This usually takes 30–60 minutes.
How to Prevent Frost Build-Up
- Always ensure the freezer door seals tightly — check for worn or damaged seals
- Don't put warm food directly into the freezer; let it cool first
- Avoid opening the freezer door more than necessary
- Consider a frost-free freezer model for your next purchase
Need a New Freezer?
If your freezer is frosting up constantly, or the ice build-up returns quickly after defrosting, it may be time for a replacement. Oceania Appliances stocks certified refurbished chest freezers and upright freezers, all tested and backed by a 3-month warranty. Shop at oceaniaappliances.com.au for quality appliances at up to 60% off retail. Free delivery across NSW.