A refrigerator water filter needs periodic replacement so the dispenser and ice maker can work with clean, steady flow. The exact procedure varies, but the safe sequence is to identify the correct cartridge, relieve pressure, and check for leaks afterward.
Confirm the cartridge
Read the refrigerator model and filter number before buying a replacement. Do not force a cartridge that does not match the housing. If the water has an unusual odor or the flow is poor, inspect the supply line as well as the filter.
Prepare the dispenser
Turn off the ice maker if the instructions require it and place a towel below the housing. Follow the release or twist direction printed on the cartridge. Do not remove panels or disturb electrical wiring to reach the filter.
Install the new filter
Remove protective caps and seat the new cartridge fully. Lock it with the specified motion and confirm that the cover closes. A filter that sits crooked can leak or restrict flow.
Flush and inspect
Run the recommended amount of water into a container and discard it. Check the housing and tubing for drips while the dispenser operates. Reset the filter indicator only after the new cartridge is installed and the flow is normal.