Why isn't my fridge cooling? 7 things to check before you call

When your refrigerator stops cooling, the clock on your groceries starts ticking. Before you panic (or before you call us), here are the seven most common reasons a fridge stops cooling — in roughly the order our technicians check them in real homes around Memphis.

1. Power and outlet — yes, really

It sounds obvious, but the number-one cause of a “dead” fridge is a tripped GFCI outlet, a kicked plug, or a flipped breaker. Pull the fridge out (carefully), confirm it’s plugged in firmly, and test the outlet with something else — a phone charger, a lamp. If the outlet is dead, reset the GFCI or check the breaker.

2. Thermostat setting got bumped

Kids open the fridge a hundred times a day, and the temperature dial gets bumped. Verify the fridge is set to about 37°F and the freezer to about 0°F. On older models with a dial, “mid” is usually the right starting point.

3. Vents blocked by food

Modern fridges cool the fresh-food compartment using cold air pulled from the freezer. If a bag of frozen peas is leaning against the vent at the back of the freezer, that airflow stops. The freezer stays cold, the fridge slowly warms. Pull items away from the back walls.

4. Condenser coils caked with dust

The coils on the back or underneath release heat. Coated in dust, they can’t. Result: the compressor runs constantly but cooling drops. Unplug, vacuum the coils with a brush attachment, and give the fridge an hour to recover.

5. Door seal failing

Slide a dollar bill between the door and the frame and close the door. Pull it out — if it slides out with no resistance, the gasket is shot. Replace the seal. A bad gasket can run a fridge ragged.

6. Frost buildup blocking the evaporator fan

If the freezer is frosty and the fridge is warm, the evaporator fan is likely stalled or its airflow is blocked by frost. This usually means a failed defrost system — defrost heater, thermostat, or timer. That’s a service call.

7. Compressor or sealed system

If you hear no humming from the back, or you hear loud clicking every few minutes (the compressor trying and failing to start), the compressor or its relay has failed. Don’t pour money into an old fridge here; call for a diagnosis. Sometimes it’s a $40 relay; sometimes it’s time for a new unit.