Topics:

• When to replace or change out water filter
• Where to purchase a replacement water filter
• Remove and replace water filter
• Reset water filter life after replacement
• Can the water filter notification be reset through the app?
  
• Water filter replacement troubleshooting

Answer:

Water Filter Icon

Water filters are ready to be replaced whenever the replacement indicator begins to flash, or after approximately one year.

• The water filter indicator appears in the control panel display as four drops of water passing through a horizontal sheet of paper.
  
• On Classic models, the icon appears between the temperatures:
  

Purchase Water Filter

• Replacement water filters are available for purchase through Sub-Zero’s Accessory Store or through a Factory Certified Parts Distributor by calling them directly.
• The product serial number is required to select the right replacement water filter for your product in the Sub-Zero Accessory Store. 
  • Use Sub-Zero Serial Tag Locations for help finding the serial number.
• To determine the right water filter for a product, use the search feature in the Sub-Zero Accessory Store.
• Refer to Water Filter Part Numbers to compare the part number of an existing water filter to available replacements. 

Replace Water Filter

Note: Not all Sub-Zero products include a water filtration system.

• There is no water filter in 200/300, 500, 600, or 700 Series models, nor in Undercounter or Designer Drawer products and some ice makers. 
• For a complete list, refer to Sub-Zero Does Not Have a Water Filter.

Replacing a water filter varies by filter type and model. Refer to the instructions below for product-specific replacement instructions:

Classic Series (BI)

• Classic Series (BI) Water Filter Replacement (Twist-In Filters)
• Classic Series (BI) Water Filter Replacement (Push-In Filters)

Designer Series (IT, IC)

• Designer Series (IT, IC) Water Filter Replacement

PRO Series

• PRO Series Water Filter Replacement

648PRO Series

• 648PRO Series Water Filter Replacement

• UC-15I Undercounter Ice Maker Water Filter Replacement

Reset Water Filter

Resetting the filter varies by product. Refer to the instructions below for product-specific reset instructions:

• Sub-Zero Classic (BI) Reset Water Filter
  
• Sub-Zero Legacy Designer Series (IT, IC) Reset Water Filter
  
• Sub-Zero Undercounter Ice Maker UC-15I Reset Water Filter
• Sub-Zero Group Owner's App Refrigeration Alerts and Notifications
• The 648PRO Series Water Filter Life automatically resets once the filter cartridge has been replaced.

Reset Water Filter in Mobile App

• The water filter cannot be reset through the mobile app. 
• Filter life must first be reset on the appliance according to instructions above.

If the Sub-Zero app does not update the filter life within a few hours after replacement and reset, refer to:

• Sub-Zero Group Owner's App Water or Air Filter Life Incorrect
• Sub-Zero Group Owner's App Refrigeration Alerts and Notifications

Water Filter Troubleshooting

• Water Filter Stuck
• Sub-Zero Frequent Water Filter Replacement
• Incorrect Water Filter Ordered or Received
• Water Leaking From Water Filter