Refrigerator Compressor Runs Constantly: Is That Normal?

HomeBlogRefrigerator Compressor Runs Constantly: Is That Normal?
11JulPWS 23 06

A refrigerator’s compressor is the heart of the cooling system. It cycles on and off to maintain the set temperature, helping keep your food fresh and safe. However, if you’ve noticed that your compressor is running non-stop, it’s natural to be concerned. Is this behavior normal? Or is your refrigerator signaling that something’s wrong?

Let’s explore the potential causes, when constant operation is acceptable, and when it’s time to call in a professional.

When a Constantly Running Compressor Is Normal

  1. Hot Ambient Temperatures
    During summer or in warmer climates, refrigerators have to work harder to keep cool. If your kitchen is particularly hot, your compressor may run longer to maintain internal temperatures. This can be normal behavior under environmental stress.
  2. Recent Load or Frequent Opening
    Did you just restock the fridge after a grocery run? Or have you been opening the door more often than usual? Every time the door opens, warm air enters, forcing the compressor to work overtime. This isn’t necessarily a sign of malfunction—it may stabilize once the temperature normalizes.
  3. Modern Energy-Efficient Models
    Many newer refrigerators are designed to operate with longer, slower cycles rather than short, powerful bursts. This strategy uses less energy over time and maintains a more stable temperature. If you’ve recently upgraded, a constantly running compressor could be a feature, not a flaw.

When It’s Not Normal

  1. Dirty Condenser Coils
    Dust and debris can accumulate on the condenser coils, usually located at the back or underneath the refrigerator. When the coils are dirty, they can’t effectively dissipate heat, making the compressor work harder and longer. Cleaning the coils may solve the issue.
  2. Faulty Door Seal
    A worn or damaged door gasket allows cold air to leak out and warm air to seep in. The compressor responds by running continuously to compensate. Run your fingers along the seal—if you feel cold air escaping or see cracks, it might be time for a replacement.
  3. Incorrect Thermostat Setting
    Setting the fridge temperature too low can cause the compressor to run constantly. The ideal temperature for a refrigerator is around 37–40°F (3–4°C), and -1°F to 0°F (-18°C) for the freezer. Lower settings may not cool food better but will definitely overwork the compressor.
  4. Faulty Defrost System
    Modern refrigerators defrost themselves periodically. If the defrost system fails, frost can build up on the evaporator coils, hindering proper airflow. This forces the compressor to stay on. You might also notice frost buildup or unusually cold sections in the fridge.
  5. Low Refrigerant or Leak
    A refrigerant leak or low levels of refrigerant can lead to the compressor running continuously, as it tries to reach the desired cooling temperature but never quite succeeds. This situation usually requires professional diagnosis and repair.

Risks of a Constantly Running Compressor

Ignoring a non-stop compressor can lead to more than just higher energy bills. The added stress may shorten the compressor’s lifespan, one of the most expensive parts to replace. Additionally, the refrigerator may fail to maintain safe food storage temperatures, leading to spoilage.

Quick Troubleshooting Steps

  • Check the temperature settings. 
  • Clean the condenser coils. 
  • Inspect the door seals. 
  • Ensure the fridge isn’t overloaded or placed too close to the wall. 
  • Monitor for unusual noises or temperature fluctuations. 

If these steps don’t solve the issue, professional intervention is recommended.

When to Call a Professional

If your refrigerator’s compressor is running constantly despite normal usage conditions and basic maintenance, it may be time to consult an expert. Problems like refrigerant leaks, faulty sensors, or defrost issues require specialized tools and training.

Don’t ignore the warning signs. Prolonging repair could cost more in the long run.

Contact Poway Appliance Repair Service Center for a fast and thorough diagnosis. Our experienced technicians will pinpoint the cause and restore your fridge to peak performance.

 

Contact us

(858) 203-0990

[email protected]

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Our specialist will perform the necessary repairs right in your home. We are pleased to offer a 90-day labor warranty to all customers after we repair an appliance.

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License No. #50560
Our specialist will perform the necessary repairs right in your home. We are pleased to offer a 90-day labor warranty to all customers after we repair an appliance.
Newsletter
Subscribe to our news, you will receive personalized discounts

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