How often should I replace the water filter?
You should replace the water filter at least once every 6 months. The water filter status on the user interface will prompt you to replace the filter after a standard amount of water (125 gallons/453 liters) has flowed through the system.
From the official Frigidaire Refrigerator (D1663Ddc-2239-4221-B) manual, page 41
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