Sub-Zero Drain Pan Fills Up Quickly


  • What causes a drain pan to fill up?
  • Why is there water in the drain pan?
  • How much water should be in a drain pan?
  • Drain pan overflow


Several factors contribute to water in the drain pan, such as temperature setting, defrost cycles, food storage, and ambient room temperatures or humidity levels.

  • Some factors that can contribute to an excess amount of water in the drain pan include lack of condenser cleaning, torn gaskets, and sealed system issues.
  • It is normal for water to be in the drain pan. However, the drain pan should never overflow with water.
  • Amount of water in the drain pan varies by humidity, temperature, and how much the unit is running.
  • Drain pans can be half-full regularly, which is not an issue.
  • See also:

If the drain pan does overflow, contact Factory Certified Service to schedule an appointment for repair.

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