Refrigerator Runs Constantly: Why and How to Fix It
A refrigerator that runs constantly is more than just an energy waster - it is a sign that something is wrong. Understanding why this happens can help you determine whether you need professional service or can resolve it yourself.
Normal vs. Excessive Running
What is Normal?
Modern refrigerators typically run:
What is Excessive?
Constant running is a concern when:
Common Causes of Constant Running
1. Dirty Condenser Coils
This is the most common cause. Dirty coils cannot release heat efficiently, forcing the compressor to run longer.
Solution: Clean the condenser coils every 6-12 months. On most units, they are located at the bottom front or back.
2. High Ambient Temperature
The refrigerator works harder when:
Solution: Ensure adequate ventilation around the unit and keep it away from heat sources.
3. Door Gasket Problems
Damaged or dirty gaskets allow warm air to leak in continuously.
Test: Close the door on a dollar bill. If it slides out easily, the gasket needs attention.
Solution: Clean gaskets with warm soapy water. Replace if damaged.
4. Thermostat Set Too Cold
An overly cold setting forces the compressor to work harder.
Recommended settings:
5. Door Left Open or Opened Frequently
Every time the door opens, warm air enters and cold air escapes.
Solution: Minimize door opening time and frequency. Check that doors close completely.
6. Frost Buildup (Manual Defrost Units)
Excessive frost acts as insulation, reducing cooling efficiency.
Solution: Defrost when ice buildup exceeds 1/4 inch.
7. Failing Components
Several component failures can cause constant running:
8. Low Refrigerant (Requires Professional Service)
A refrigerant leak causes the system to lose cooling capacity. The compressor runs constantly trying to compensate.
Signs:
Troubleshooting Steps
- Check and clean condenser coils
- Verify temperature settings
- Inspect door gaskets
- Check for frost buildup
- Ensure adequate ventilation
- Listen for unusual sounds
When to Call a Professional
Professional service is needed when:
A constantly running refrigerator can significantly increase your energy bills and may indicate impending component failure. Addressing the issue promptly can prevent more expensive repairs.