Fridge Maintenance Guide: Keep Your Refrigerator Running for 10+ Years

The condenser coils, usually located at the back or underneath your fridge, dissipate heat as the refrigerant cycles through the system. When dust, pet hair, and kitchen grease coat these coils, the compressor has to work significantly harder to maintain temperature. This drives up your electricity bill and shortens compressor life. A compressor replacement is one of the most expensive fridge repairs, often costing $300 or more.

How to clean condenser coils

1. Unplug the fridge from the wall. If it's plumbed for water, you don't need to disconnect the water line, just the power.
2. Pull the fridge away from the wall carefully. Tilt it slightly backward and walk it out on its front legs to avoid scratching your floor.
3. If coils are on the back panel, use a coil cleaning brush (around $15 from Bunnings) to gently sweep dust downward. Follow up with a vacuum using a crevice attachment.
4. If coils are underneath (common on Fisher & Paykel, LG, and Samsung models), remove the kick plate at the front base and brush outward.
5. Wipe any remaining grime with a damp microfibre cloth. Let everything dry before plugging back in.

The rubber gaskets around your fridge and freezer doors are the single most important barrier keeping cold air in. A worn or cracked seal forces the compressor to run almost continuously, and you'll notice frost build-up in the freezer and inconsistent temperatures on your shelves.

The dollar note test

Close the fridge door on a dollar note (or a piece of paper) so half is inside and half is outside. Try to pull it out. If it slides out with no resistance, the seal is failing at that point. Test at multiple spots around the door, paying extra attention to the corners where seals tend to degrade first.

Cleaning the seals

Every month, wipe the door seals with a cloth dampened in warm water and a small amount of bicarb soda (one tablespoon per cup of water). This removes food residue and mould that causes the rubber to deteriorate. Avoid bleach and harsh chemicals, which dry out and crack the gasket material.

Replacing a failed seal

Replacement gaskets for common Australian brands like Westinghouse, Electrolux, and Fisher & Paykel typically cost $40 to $120 for the part. You can fit them yourself on most models by peeling back the old gasket and pressing the new one into the retaining channel. Soaking the new gasket in warm water for 10 minutes before installation makes it more pliable and easier to seat correctly.

Your fridge compartment should sit between 3°C and 4°C. The freezer should be at minus 18°C. These aren't arbitrary numbers: food safety guidelines from Food Standards Australia New Zealand require your fridge to be at or below 5°C, and the 3 to 4 degree range gives you a safety buffer without freezing your lettuce.

Why the built-in display isn't always accurate

The temperature sensor in most fridges measures air temperature near the sensor location, not the actual temperature of your food or the warmest spot in the fridge. Buy a standalone fridge thermometer (around $8 to $15 from any kitchenware store) and place it in the centre of the middle shelf. Check it weekly.

If your fridge is consistently running warmer than 5°C despite the thermostat being set correctly, this points to dirty condenser coils, a failing door seal, or a refrigerant issue that needs professional attention.

Avoid overloading

Cold air needs to circulate around food items. Packing your fridge too tightly blocks airflow from the vents (usually at the back wall of the fridge compartment) and creates warm pockets where bacteria thrive. Leave at least a couple of centimetres of space around items and never block the air vents with large containers.

If you have a manual defrost or older-model fridge, ice build-up thicker than 5mm on the freezer walls acts as insulation and forces the compressor to work overtime. Even frost-free models can develop ice problems if the auto-defrost heater or timer fails.

Manual defrost procedure

1. Remove all food and place it in an esky with ice packs. Most defrost jobs take 2 to 4 hours, so plan accordingly.
2. Unplug the fridge and open both the fridge and freezer doors wide.
3. Place towels on the floor beneath the fridge and a shallow baking tray on the lowest shelf to catch meltwater.
4. To speed things up, place a pot of hot (not boiling) water inside the freezer and close the door for 15 minutes. The steam loosens ice quickly.
5. Gently prise loose ice with a plastic spatula. Never use a metal tool or knife, as puncturing the freezer wall can damage the evaporator coils and release refrigerant, which is both an expensive repair and an environmental hazard.
6. Wipe the interior dry, plug back in, and wait until it reaches minus 18°C before returning food (usually about an hour).

Spills, expired food, and general grime inside your fridge don't just smell bad. They harbour bacteria and mould, and acidic spills (from fruit juice, tomato sauce, or pickles) can corrode shelf surfaces and interior coatings over time.

Step-by-step interior clean

1. Remove all shelves, drawers, and door bins. Wash these separately in warm soapy water in your kitchen sink. Avoid putting cold glass shelves into hot water, as the thermal shock can crack them. Let them come to room temperature first.
2. Wipe the interior walls, ceiling, and floor with a solution of 2 tablespoons of bicarb soda dissolved in 1 litre of warm water. This neutralises odours without leaving a chemical residue.
3. For stubborn stains, make a paste of bicarb soda and a few drops of water. Apply it to the stain, leave for 10 minutes, then scrub with a soft cloth.
4. Dry all surfaces with a clean towel before replacing shelves and food.
5. Wipe the exterior, including the door handle (a high-touch germ hotspot), with a damp microfibre cloth. For stainless steel models from brands like Smeg, Bosch, or Miele, wipe in the direction of the grain to avoid streaking.

Sticking to this schedule takes less than two hours per year in total and is the most effective way to keep repair costs low and push your fridge toward a 13-year lifespan rather than a 6-year one.

Most fridges have a small drain hole at the back of the fridge compartment, near the bottom. This channels condensation into a drip tray underneath the fridge, where it evaporates. Food particles and mould can clog this drain, causing water to pool at the bottom of the fridge or leak onto your kitchen floor.

To clear it, use a cotton bud or a pipe cleaner to gently remove debris from the drain opening. Then flush it with a mixture of warm water and a teaspoon of bicarb soda using a turkey baster or small syringe. You'll hear the water dripping into the tray underneath, which confirms the drain is clear.

While you're at it, pull the fridge out and check the drip tray. On many Westinghouse and Electrolux models, the tray sits on top of the compressor. Empty it, clean any residue, and slide it back into place. A dirty drip tray is a common source of mystery fridge smells that no amount of interior cleaning will fix.

A fridge that isn't level causes the door to swing open or not close properly, leading to seal wear and cold air loss. It also puts uneven stress on the compressor mounts, which can cause vibration noise and premature wear.

Place a spirit level on top of the fridge, checking both side-to-side and front-to-back. Most fridges have adjustable feet at the front. Turn them clockwise to raise and anticlockwise to lower. The fridge should be perfectly level side-to-side and tilted very slightly backward (about 5mm higher at the back) so the door swings closed by itself. This small tilt also helps water drain correctly toward the rear drain hole.

Regular maintenance handles the preventable issues, but some problems need a licensed technician. Call a professional if you notice:

• Compressor running constantly without the fridge reaching set temperature, even after cleaning the coils and checking door seals.
• Clicking, buzzing, or grinding noises that persist after levelling the fridge.
• Refrigerant leak signs: oily residue near the compressor, a chemical smell, or the fridge suddenly not cooling at all.
• Electrical issues like tripping the circuit breaker, flickering interior lights, or the fridge intermittently turning off.
• Ice build-up in a frost-free model, which indicates a defrost heater, thermostat, or timer failure.

What professional repairs cost

Fridge repairs in Australia generally range from $50 to $500, depending on the fault. Expect a call-out or diagnostic fee on top: businesses like EPL Appliance Repair and Ark Appliance Repairs charge a call-out fee as part of their service. Ark Appliance Repairs caps labour at one hour and offers a 10% discount for pensioners and seniors, plus a 90-day service guarantee and 12-month parts warranty. Alpha Appliance Repairs provides a 12-month parts warranty and a 100% workmanship guarantee.

For commercial fridges, Fridges R Us Commercial Fridge Repairs Sydney (rated 5 stars across 764 reviews) charges a flat $199 +GST inspection fee that includes unlimited diagnostic time.

Highly rated national options include Fallon Solutions (4.6 stars, 7764 reviews), Nationwide Appliance Repairs (4.6 stars, 2030 reviews), and Sydney Appliance Service (4.8 stars, 1057 reviews). Across Australia, there are over 200 fridge repair businesses with an average rating of 4.4 out of 5. About 74% offer emergency or same-day service.

Repair or replace?

A good rule of thumb: if your fridge is less than 10 years old and the repair costs less than half the price of a new equivalent model, repair it. If the repair quote exceeds 50% of replacement cost, or your fridge is already past 10 years, replacing it with a newer, more energy-efficient model often makes more financial and environmental sense. As one Reddit user pointed out, repair costs of 30 to 50% of replacement are increasingly common, so get quotes before committing.