Clean the Condenser

Core Issue:

  • How to clean the condenser
  • "Service" or "Vacuum Condenser" flashing
  • Sub-Zero running constantly or not cooling
  • Sub-Zero temperatures are warm or hot
  • Chemical cleaner or degreaser that can be used to clean the condenser


Perform condenser cleaning every six to twelve months to keep Sub-Zero refrigeration products operating their best. Clean the condenser more often if pets are present. Do not bend the aluminum fins of the condenser.

Follow specific product condenser cleaning instructions below.

Condenser Cleaning Instructions

ProductCondenser Cleaning Instructions
Built-InBuilt-In Condenser Cleaning
IntegratedIntegrated Condenser Cleaning
648PRO648PRO Condenser Cleaning
Undercounter ModelsUndercounter Condenser Cleaning
427 or 427R Models427 and 427R Condenser Cleaning
430 ModelsModel 430 Condenser Cleaning
700 Series700 Series Condenser Cleaning
600 Series600 Series Condenser Cleaning
500 Series500 Series Condenser Cleaning
601 Models601 Models Condenser Cleaning
501 Models501 Models Condenser Cleaning
200 and 300 Series200/300 Series Condenser Cleaning

Condenser cleaning related information:

Refer to the product use and care guide for further information. If the unit has temperature issues, contact Factory Certified Service to schedule an appointment for repair if temperatures do not return to the setpoint within 24 hours of cleaning the condenser.

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