How to Clean Your Refrigerator Water Filter
Why Your Water Filter Needs Regular Cleaning
Your refrigerator's water filter traps sediment, chlorine, and other particles that make tap water taste stale or off. Over time, the filter material becomes clogged with what it has caught. A clogged filter slows the flow of water to your dispenser and ice maker, and it stops doing its job of improving taste and odor. Cleaning the filter extends its life and keeps your water tasting fresh between replacements.
Most refrigerator filters are not designed to be washed and reused indefinitely—they have a lifespan, usually six months to a year depending on your water quality and how much you use the dispenser. But you can rinse the exterior and flush the filter to remove trapped sediment and restore flow before you replace it. This is different from replacing the filter entirely, and it costs nothing.
Key Takeaways
- Rinse the filter's exterior under cool running water to remove loose sediment and debris that slows water flow.
- Flush the filter by running water backward through it (from the outlet side) to dislodge trapped particles inside.
- Clean your filter every three months or whenever you notice slower water flow or a change in taste.
- Replace the filter according to your refrigerator's manual—cleaning extends its life but does not replace the need for replacement.
- Turn off the water supply before you remove the filter to avoid leaks and water damage.
Locate and Remove Your Water Filter Safely
Water filters sit in different places depending on your refrigerator model. The most common locations are inside the refrigerator compartment (usually in the upper corner or behind the crisper drawers), in the base grille at the bottom front, or inside the freezer compartment. Check your refrigerator's manual or look for a small plastic housing with a blue or white cartridge inside.
Before you remove the filter, turn off the water supply to your refrigerator. Look for a shut-off valve behind or beneath the refrigerator where the water line connects. Turn it clockwise until it stops. This prevents water from spraying out when you unscrew the filter housing. If you cannot find a shut-off valve, turn off the main water supply to your home.
Once the water is off, locate the filter housing and unscrew it by turning counterclockwise by hand. Some housings have a release button instead—press it and pull straight out. Have a small bowl or towel ready to catch any water still in the line. Set the filter on a clean surface.
Rinse the Filter Exterior
Hold the filter under cool running tap water and rinse the outside surface thoroughly. Use your fingers or a soft brush to gently rub away sediment and debris. Do not use hot water, which can damage the filter material, and do not scrub hard or use a stiff brush. You are removing loose particles, not trying to clean the interior of the filter itself.
Pay attention to the threaded end and the outlet side of the filter. These areas collect sediment that slows water flow. Rinse until the water running off the filter runs clear. This alone often restores water flow noticeably.
Flush the Filter to Remove Internal Blockages
After rinsing the exterior, you can flush the filter to dislodge particles trapped inside. Hold the filter with the outlet end (the end that connects to your refrigerator) pointing downward into a sink or bowl. Pour cool tap water slowly into the inlet end (the threaded end) and let it run through and out the outlet. This backward flow pushes trapped sediment out of the filter material.
Repeat this flushing two or three times, pouring slowly so the water has time to work through the filter. You may see sediment or discolored water come out—this is normal and means the flush is working. Stop when the water running out is clear or nearly clear.
Do not use high pressure or force water through the filter, as this can damage the internal filter material. Gentle, slow flushing is more effective and safer for the filter.
Reinstall the Filter and Restore Water Flow
Once the filter is clean and dry, screw it back into the housing by turning clockwise by hand until it is snug. Do not over-tighten—hand-tight is enough. If your filter uses a release button, push it back into place until you hear or feel it click.
Turn the water shut-off valve back on by turning counterclockwise. Listen for water flowing into the refrigerator. Run the water dispenser for 30 seconds to flush air out of the line and check for leaks around the filter housing. If water drips from the connection, turn off the water and tighten the housing slightly more.
Check that water flows normally to both the dispenser and ice maker. If flow is still slow after cleaning, the filter may be near the end of its life and need replacement rather than cleaning.
When to Clean Versus When to Replace
Clean your filter every three months or whenever you notice slower water flow, a change in taste, or cloudiness in the ice. Cleaning restores flow and removes sediment but does not restore the filter's ability to absorb chlorine and odors once it is saturated. Most filters reach the end of their useful life between six months and one year, depending on your water quality and how much you use the dispenser.
If you clean the filter and water flow does not improve, or if the water still tastes or smells off, the filter needs replacement. A new filter is inexpensive—usually between $20 and $60—and takes five minutes to install. Check your refrigerator's manual for the correct replacement filter model number, as different brands and models use different cartridges.
Keep a record of when you installed your current filter and when you last cleaned it. This helps you stay on schedule and catch problems early before they affect your water quality or ice maker performance.
Troubleshooting Slow Water Flow After Cleaning
If water still flows slowly after you have cleaned and reinstalled the filter, check the water shut-off valve behind the refrigerator. Make sure it is fully open—turn it counterclockwise until it stops. A partially closed valve restricts flow and feels like a filter problem.
Next, check the water line itself for kinks or pinches. The line can get bent when you pull the refrigerator out to clean behind it. Straighten any kinks and make sure the line is not compressed under the refrigerator's weight.
If the valve is open and the line is straight, the filter may have reached the end of its life. Cleaning can only remove sediment; it cannot restore a filter that is saturated with absorbed contaminants. Replace the filter with a new one and water flow should return to normal.
Frequently Asked Questions
Can I wash the filter in the dishwasher?
No. Dishwasher heat and pressure damage the filter material and can crack the housing. Rinse by hand under cool running water only. The filter is not designed to withstand high heat or strong water pressure.
How do I know if my filter is clogged?
Water flows more slowly from the dispenser, ice cubes take longer to make, or the water tastes flat or off. You may also notice cloudiness in the ice. These are all signs the filter needs cleaning or replacement.
What if water leaks from the filter housing after I reinstall it?
Turn off the water, remove the filter, and check that the rubber seal inside the housing is clean and not cracked. Rinse the seal and the threaded connection, then reinstall the filter and tighten slightly more. If it still leaks, the seal may need replacement—check your manual for the part number.
Can I use the refrigerator without a water filter?
Yes, but your water will taste like tap water and may have sediment or chlorine odor. Most refrigerators have a bypass plug you can install if you remove the filter. Check your manual for the bypass plug location and installation steps.
How often should I replace the filter if I clean it regularly?
Cleaning extends the filter's life but does not eliminate the need for replacement. Most filters should be replaced every six to twelve months, depending on your water quality and usage. Check your refrigerator's manual for the recommended replacement schedule.