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Air conditioner freezing up (ice on the coil)

Ice forms when the coil gets too cold, nearly always from low airflow or running in cool weather. Thaw first, then fix airflow. Repeated icing with good airflow suggests low charge, which is sealed-system work.

Cross-checked ~60 min easyBrands: All

Before you start

  • Never chip ice off the coil with tools; you can puncture the coil.
  • Protect floors from melt water.

Diagnostic steps

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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Air conditioner freezing up (ice on the coil) · OnCall Tech