AC Freezing

An AC freezes for only two underlying reasons: not enough airflow across the coil, or not enough refrigerant in the system.

• YELLOW — Inspection Recommended

  Why Is My AC Freezing Up?

  An air conditioner freezes when the evaporator coil drops below 32°F, and there are only two real reasons that happens: not enough warm air is flowing across the coil, or there is not enough refrigerant in the system.

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• YELLOW — Inspection Recommended

  Why Is My AC Unit Freezing Up?

  Where the ice forms is diagnostic.

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• YELLOW — Inspection Recommended

  Why Is My AC Frozen?

  If your system is already a block of ice, deal with the ice first and the diagnosis second.

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3 of 50 diagnostic guides in this category.