Refrigerator Not Cooling Properly

A refrigerator that stops cooling properly puts your food at risk and requires prompt attention. Before panicking about a major repair, know that many cooling failures have simple causes that a homeowner can address. Acting quickly can prevent food waste and potentially save you a costly service call (CAD $200–$400 for compressor diagnostics).

Dirty condenser coils are a leading cause — when coated in dust and pet hair, they can't release heat efficiently. Blocked air vents inside the fridge (from overpacking) restrict cold air circulation. A failing evaporator fan, a stuck defrost timer, or worn door gaskets that let warm air in are other common culprits.

A vacuum with a brush attachment or a coil cleaning brush (CAD $10–$15), a thermometer, a clean cloth, and possibly replacement door gaskets (CAD $30–$80 depending on model). A flashlight helps for inspecting the back and underside of the unit.

1. Check the temperature setting — ensure it hasn't been accidentally adjusted. Recommended: 2–3°C for the fridge, -18°C for the freezer.
2. Ensure air vents inside the fridge aren't blocked by food containers.
3. Pull the fridge away from the wall and vacuum the condenser coils (located on the back or underneath). Do this every 6–12 months.
4. Check the door gasket — close the door on a piece of paper. If it slides out easily, the gasket isn't sealing properly and needs replacing.
5. Listen for the evaporator fan (inside the freezer). If you hear nothing when the compressor is running, the fan motor may need replacement.
6. Allow 24 hours after cleaning coils before assessing improvement.

If the compressor runs continuously but the fridge doesn't cool, or if you hear clicking sounds from the compressor, the issue is likely a refrigerant leak or compressor failure. These repairs require a licensed technician with refrigerant handling certification. If the fridge is over 15 years old, replacement may be more cost-effective than repair.