Refrigerators

Refrigerator not cooling

A fridge that isn't cold usually means airflow is blocked, the condenser coils are dirty, or a component like the start relay or compressor has failed. Checking vents and coils first solves many cases without a repair call.

Difficulty
Easy
Time
30–60 minutes
DIY cost
$0–$40
Pro cost
$150–$400

Symptoms

  • Food and milk feel warmer than they should
  • Interior light works but air doesn't feel cold
  • Freezer side stays cold while fridge side doesn't
  • Compressor hums but no cold air comes out

Likely causes

  • CommonBlocked air vents inside the fridgeFood packed against the vent between the freezer and fridge blocks cold air from circulating.
  • CommonDirty condenser coilsDust and pet hair on the coils under or behind the fridge reduce its ability to release heat, weakening cooling.
  • PossibleDoor not sealing properlyA worn gasket lets warm air in continuously, forcing the compressor to run without catching up.
  • PossibleFailed evaporator fanThis fan circulates cold air from the freezer to the fridge; if it stops, the fridge section warms up.
  • PossibleCompressor or start relay failureIf the compressor won't run or cycles off quickly, the whole cooling system stops working.

What to do

  1. Check that the thermostat/temperature dial is set correctly, usually around 37F for the fridge and 0F for the freezer.
  2. Make sure nothing is blocking the air vents between the freezer and fridge compartments.
  3. Unplug the fridge and vacuum the condenser coils, usually located behind a bottom kick plate or on the back of the unit.
  4. Check the door gaskets for gaps by closing the door on a piece of paper and seeing if it pulls out easily.
  5. Listen for the evaporator fan running inside the freezer; if silent, it may need replacement.
  6. Give the fridge 24 hours after cleaning coils and clearing vents before judging whether it's cooling again.
  7. If it still isn't cooling after these checks, the compressor or a sealed system component likely needs professional diagnosis.

Tools and parts

  • Vacuum with hose attachment
  • Coil brush
  • Thermometer
Refrigerator door gasketSearch: “refrigerator door seal gasket replacement”
Evaporator fan motorSearch: “refrigerator evaporator fan motor replacement”

When to call a pro

If coils are clean, vents are clear, and the gasket seals well but the fridge still isn't cold, call an appliance technician to check the compressor and refrigerant sealed system.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.