How often should I change the water filter cartridge?
You should change the interior water filter cartridge, located in the upper corner of the fresh food compartment, every 6 to 9 months depending on your usage. If water flow to the dispenser or ice maker decreases noticeably before 6 months have passed, replace the filter cartridge more often. The replacement cartridge part number is 8171413 (NL200).
From the official Whirlpool Ice Maker Refrigerator manual, page 5
Have a follow-up question?
Answers from the official manual.
Common questions