How to Remove and Replace Your LG Refrigerator Water Filter

Locate and Access Your LG Water Filter

Most LG refrigerators have the water filter in one of two places: inside the refrigerator compartment in the upper right corner, or at the base of the unit behind the front grille. Open your refrigerator door and look in the upper right area first—you will see a cylindrical cartridge, usually white or black, sitting in a housing that looks like a small tower. If you do not see it there, close the door and kneel down to look at the front grille at the bottom of the fridge. The filter cartridge will be visible through the grille or accessible by removing a small plastic cover.

Check your owner's manual if you are unsure which model you have. The manual will show you the exact location with a diagram. You can find your manual on the LG website by entering your model number, which is printed on a sticker inside the refrigerator, usually on the wall behind the produce drawer or on the side wall.

Key Takeaways

• LG refrigerator filters sit either in the upper right corner inside the fridge or at the base behind the front grille, depending on your model.
• Twist the filter counterclockwise one-quarter turn to release it; do not pull straight out or you may crack the housing.
• Let water drain into a cup or bowl for a few seconds after removal, as the line will still hold water under pressure.
• Install the new filter by twisting clockwise until you feel resistance, then turn an additional one-quarter turn—do not overtighten.
• Run water through the dispenser for 30 seconds after installation to flush air from the line and remove carbon dust from the new cartridge.

Remove the Old Filter with a Quarter-Turn Twist

Stand in front of the filter and grip it firmly with one hand. Using your other hand, twist the filter housing counterclockwise—you are aiming for a one-quarter turn, which is about 90 degrees. You will feel the cartridge loosen and click or pop slightly when it reaches the release point. Stop turning at that moment. Do not continue twisting or pull the filter straight out; the housing is designed to release only when you stop at the quarter-turn mark.

Once the filter is loose, gently pull it straight toward you. Water may drip from the connection point, so have a small cup or bowl ready to catch it. The water line behind the filter stays pressurized even when the refrigerator is running, so expect a few tablespoons of water to spill. This is normal and does not mean anything is wrong.

Prepare the Housing for the New Filter

After you remove the old filter, look inside the empty housing. You will see a small rubber seal or O-ring at the base of the opening. Wipe this seal gently with a clean, damp cloth to remove any debris or mineral buildup. If the seal looks cracked or damaged, contact LG customer service—a damaged seal can cause leaks around the new filter.

Check the filter housing opening itself for any visible dirt or sediment. If you see buildup, wipe the inside gently with a soft cloth. Do not use a brush or scrub hard, as you can damage the seal or the plastic housing. Once the housing is clean, you are ready to install the replacement filter.

Install the New LG Filter Correctly

Remove the new filter from its packaging and inspect it for any damage. Look at the rubber seal at the base of the cartridge—it should be smooth and intact. If it looks compressed or cracked, do not install it; exchange it for another one.

Hold the new filter with the seal end pointing toward the housing opening. Insert it straight into the housing until you feel it seat against the rubber seal inside. The cartridge should slide in smoothly without forcing. Once it is fully inserted, twist it clockwise. You will feel resistance as the threads engage. Turn until you feel a solid click or stop—this is the one-quarter-turn release point. Then turn an additional one-quarter turn (another 90 degrees) to lock it fully in place. Stop turning when you feel firm resistance; overtightening can crack the housing or damage the seal.

Flush the New Filter Before Using Water

After installation, do not drink water or use ice from the dispenser immediately. The new filter contains carbon dust from manufacturing, and the water line contains air that needs to be pushed out. Go to the water dispenser on your refrigerator door and hold a cup under the nozzle. Press the dispenser button and let water run for 30 seconds. The water may look cloudy or slightly gray at first—this is normal and is the carbon dust flushing out. After 30 seconds, the water should run clear.

If you have an ice maker, run the dispenser for another 15 to 20 seconds to flush the line that feeds the ice maker as well. Once the water runs clear from both dispensers, your filter is ready to use. The entire flushing process takes less than a minute and ensures your water tastes clean and fresh from the first glass.

When to Replace Your LG Water Filter

LG recommends replacing the water filter every six months under normal household use. If you have hard water or high sediment in your tap water, you may need to replace it more often—every three to four months. Your refrigerator may have a filter status light on the control panel that turns red or orange when the filter is due for replacement. Check your manual to see if your model has this feature and how to reset it after you install a new filter.

If your water pressure drops noticeably, the water tastes off, or ice cubes look cloudy, the filter may be clogged before the six-month mark. Replace it immediately rather than waiting. A clogged filter reduces water flow and forces the refrigerator to work harder, which wastes energy and can damage the water pump over time.

Frequently Asked Questions

What happens if I turn the filter more than a quarter turn when removing it?

If you twist too far, you risk cracking the plastic housing or damaging the rubber seal. The quarter-turn design is intentional—it prevents over-rotation. If you have already twisted too far and the housing feels loose or cracked, stop and contact LG customer service before installing a new filter. A damaged housing will leak.

Can I use a third-party filter instead of an LG replacement?

You can, but LG filters are designed to fit the housing precisely and meet LG's water quality standards. Third-party filters may not seal properly, which can cause leaks or allow unfiltered water to bypass the cartridge. If you choose a non-LG filter, verify that it is rated for your specific model number before purchase.

Why is water still coming out after I remove the filter?

The water line stays pressurized even when the refrigerator is off. A few tablespoons of water dripping from the connection is normal. If water continues to pour out in a steady stream, the seal inside the housing may be damaged. Turn off the water supply to the refrigerator and contact LG support.

Do I need to turn off the refrigerator before removing the filter?

No, you do not need to turn off the refrigerator. The filter can be removed and replaced while the unit is running. However, if you are uncomfortable working with a pressurized water line, you can turn off the refrigerator and wait 10 minutes for the pressure to release before removal.

How do I reset the filter light after installing a new filter?

The reset method varies by LG model. Most commonly, you hold down the "Filter" or "Reset" button on the control panel for three to five seconds until the light turns off or changes color. Some models require you to press and hold two buttons at once. Check your owner's manual for the exact steps for your model, or look for a label on the control panel that shows the reset procedure.