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How to Change Sub-Zero Water Filter Cartridges Correctly

ice maker ice tastes bad

Sub-Zero makes some of the best refrigerators, but even this superior brand requires regular filter replacement to provide clean drinking water. We’ll review how to change Sub-Zero water filter cartridges correctly, including how often they should be changed and signs that replacement is needed.

A Step-By-Step Guide: How to Change Sub-Zero Water Filter Cartridges

Changing refrigerator water filter cartridges is simple but necessary, just like knowing how to clean Sub-Zero condenser coils. Both should be part of regular maintenance to keep your refrigerator functioning optimally. The following step-by-step guide details how to change Sub-Zero water filter cartridges for both the push and twist-in models.

How Often to Change Your Water Filter

How long does a Sub-Zero water filter last? The average filter should last approximately one year or provide about 750 gallons of clean water. However, you may need to change the filter more frequently if certain signs occur.

Signs You Need to Change the Filter

A refrigerator water filter screens out contaminants in your home’s water supply. Yet, over time, these impurities can clog the filter and leave it unable to do its job. Knowing how to change Sub-Zero water filter cartridges is important if you notice the following signs:

  • Refrigerator water tastes bad or has a strange smell
  • Ice maker ice tastes bad or has an unpleasant odor
  • Decreased water pressure results in less dispensed water and ice
  • The water filter icon is illuminated on the refrigerator’s control panel
how to change Sub-Zero water filter
Image: Sub-Zero, Wolf, and Cove

How to Replace Sub-Zero Push-In Water Filter

Different model refrigerators can have different filters in specific locations. Consult your owner’s manual to determine the exact filter and its location for your refrigerator. Most push-in filters are located behind the refrigerator’s upper grille. Here’s how to replace Sub-Zero water filter cartridges that are a push-in style:

  1. Pull out the grille’s bottom edges and tilt the frame forward.
  2. Remove the old filter by pushing it in and pulling it out.
  3. Unwrap the new filter and remove the plastic caps.
  4. Align the cartridge so its locking tabs can be inserted into the filter compartment.
  5. Push the cartridge into the compartment until you hear a clicking sound.
  6. Gently pull on the cartridge to make sure it’s secure.
  7. Press and hold the water filter reset button to reset the filter monitor.
  8. Flush the water lines and clear air from the system by dispensing and disposing water for two minutes. If you don’t have a water dispenser, dispose of the first two batches of ice.
how long does a sub-zero water filter last
Image: Sub-Zero, Wolf, and Cove

How to Replace Sub-Zero Twist-In Water Filter

Twist-in water filters that are located behind the refrigerator’s upper grille can be accessed the same way as push-in filters. However, some twist-in filters are found behind a water filter door panel at the top of the refrigerator’s interior. Pull the door’s bottom edge out and rotate it upward to access the filter. 

The following steps detail to change Sub-zero water filter cartridges that are a twist-in style:

  1. Remove the old filter by rotating it counterclockwise one quarter turn and pulling it out .
  2. Unwrap the new filter and remove the plastic cap.
  3. Insert the new filter into the filter compartment and turn clockwise until the filter is secure.
  4. Reset the filter monitor by pressing and holding the filter reset button for 5 seconds. Refrigerators without a reset button will reset the filter monitor automatically.
  5. Dispose of the first several glasses of dispensed water after replacing the filter. If your refrigerator doesn’t have a dispenser, dispose of the first batch of ice.
how to replace Sub-Zero water filter
Image: Sub-Zero, Wolf, and Cove

Appliance Service Station has been providing quality Sub-Zero service for over 40 years. Call us for any refrigeration question or concern.

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