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 appears in the display, 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.

After replacing the filter:

• The first several glasses of water should be discarded.
• The first two full containers of ice should be discarded. 

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

Classic Series (BI, CL)

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

Designer Series (IT, IC, DET, DEC)

• Designer Series (IT, IC, DET, DEC) 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

Refer to Recycling Water Filters for filter disposal information. 

Reset Water Filter Indicator

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

• Classic Series (CL) Reset Water Filter
• Classic Series (BI) Reset Water Filter
  
• Designer Series (DET, DEC) Reset Water Filter
• Legacy Designer Series (IT, IC) Reset Water Filter
  
• 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

Refer to the product Use and Care Guide for further information.