How to Replace Your LG Refrigerator Water Filter in 5 Minutes

Where Your LG Filter Sits and How to Access It

Most LG refrigerators keep the water filter in one of two places: inside the fridge compartment in the upper right corner, or at the base behind a kick panel at the bottom front. Open your fridge and look for a cylindrical cartridge about the size of a soda can, usually white or blue, with a release button or twist collar. If you do not see it there, crouch down and look for a small panel at the bottom of the refrigerator — it will have a slot or opening for the filter.

The model number on your refrigerator's serial plate (usually on the back wall inside the fridge) tells you which style you have. LG uses the same basic replacement method for both locations, but the access point matters for knowing which direction to turn or pull.

Key Takeaways

LG filters are located either in the upper right corner inside the fridge or behind the bottom front kick panel, and you can identify which by checking your model number.
Most filters twist counterclockwise to release, though some pull straight out — your owner's manual or the filter cartridge itself will show which motion applies to yours.
Before installing the new filter, run water through it for 5 to 10 seconds to flush out carbon dust and air from the manufacturing process.
The filter should click or seat firmly into place; if it does not, you may have the wrong replacement part or the cartridge is not fully inserted.
LG recommends replacing the filter every six months or when the water flow slows noticeably, whichever comes first.

Removing the Old Filter

Locate the release mechanism on your current filter. If it has a blue or white button on the side, press it firmly and pull the cartridge straight toward you. If it has a collar or ring around the base, grip that collar and turn it counterclockwise — usually a quarter turn is enough to unlock it, then pull it out. Some models require you to push in slightly while turning.

Water may drip from the opening or the old filter itself, so have a small towel or cup ready. Do not worry about a small amount of water — the refrigerator's internal lines hold only a few ounces. If water pours out continuously, the shut-off valve may not have closed properly; turn off the water supply to the refrigerator at the wall or under the sink, wait a minute, and try again.

Preparing the New Filter Before Installation

Remove the new filter from its packaging and inspect it for any visible damage or cracks. Check the model number on the box against your refrigerator's manual or the old filter to confirm it is the correct replacement — LG makes several sizes and connection types, and installing the wrong one will cause leaks or poor water pressure.

Before you insert it into the refrigerator, hold the filter over a sink or cup and run cold water through the inlet side (the end that connects to the water line) for 5 to 10 seconds. This flushes out carbon dust and air pockets that can affect water taste and flow. Let any excess water drain, then wipe the connection point with a clean cloth.

Installing the New Filter

Align the new filter with the opening in your refrigerator. If the old filter twisted out, the new one twists in — insert it straight into the slot and turn the collar clockwise until you feel resistance, then turn it a quarter turn more. If the old filter pulled straight out, push the new cartridge in until you hear a click or feel it seat firmly against the housing.

Do not force it. If the filter does not slide in smoothly or the twist feels stuck after a quarter turn, remove it and check that the connection points are clean and aligned. Debris or a misaligned cartridge will cause a poor seal and leaks.

Running Water and Checking for Leaks

After installation, dispense water from the refrigerator's water line or ice maker for 30 seconds. The first water may look cloudy or taste slightly off — this is normal and clears within a few minutes as the new filter settles. If the water does not flow at all, the filter may be installed backward or not fully seated; remove it and reinstall it.

Check the area around the filter opening for drips. A small amount of moisture is normal during the first few minutes, but steady dripping means the filter is not sealed correctly. Turn off the water supply, remove the filter, and reinstall it, making sure the collar or button clicks fully into place.

Resetting the Filter Light (If Your Model Has One)

Many LG refrigerators display a filter indicator light on the control panel or inside the fridge. After you install the new filter, this light should turn off automatically within a few minutes as the refrigerator detects the fresh cartridge. If the light stays on after 10 minutes, hold the filter reset button (usually labeled "Filter Reset" or "Water Filter") for 3 to 5 seconds until the light blinks or changes color.

The reset button location varies by model — check your owner's manual or the refrigerator's control panel for its exact position. Some models reset through the touchscreen; if you have a digital display, look for a "Settings" or "Service" menu and select "Filter Reset" from there.

Choosing the Right Replacement Filter

LG sells genuine filters under part numbers like LT500P, LT600P, and LT700P, depending on your refrigerator model. Third-party filters from brands like Waterdrop, Aqua Fresh, and EveryDrop are cheaper and work in most LG models, but they do not carry LG's warranty. If your refrigerator is still under warranty and you use a non-LG filter, the manufacturer may deny claims related to water quality or flow.

Check your owner's manual or the old filter cartridge for the correct part number before ordering. Buying the wrong size wastes money and may not fit your refrigerator's housing. Online retailers and appliance stores stock most common LG filters, and many offer same-day or next-day shipping.

Frequently Asked Questions

How often should I replace my LG refrigerator filter?

LG recommends replacing the filter every six months or when water flow slows noticeably, whichever comes first. If you have hard water or use the ice maker frequently, you may need to replace it more often. Some models have a filter indicator light that alerts you when replacement is due.

What if water leaks after I install the new filter?

Turn off the water supply when ready and remove the filter. Check that the connection points are clean and free of debris, then reinstall the filter, making sure the collar twists fully or the button clicks into place. If leaking continues, the filter housing may be cracked — contact LG support or a repair technician.

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

Yes, third-party filters work in most LG models and cost less, but they do not carry LG's warranty. Make sure the part number matches your refrigerator model before purchasing. Using an incorrect filter size or type can cause leaks or poor water pressure.

Why does my water taste different after I install a new filter?

New filters contain carbon dust from manufacturing. Run water through the dispenser for 30 seconds to a minute after installation to flush it out. The taste should return to normal within a few minutes. If the taste does not improve after flushing, the filter may be defective or installed backward.

Do I need to turn off the water supply before replacing the filter?

No, most LG filters have an internal shut-off valve that closes when you remove the cartridge. However, if water continues to drip after removal, turn off the water supply at the wall or under the sink and wait a minute before reinstalling the new filter.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.