Where to Find Your LG Refrigerator Air Filter

The air filter in an LG refrigerator sits inside the fridge compartment, usually in the upper back corner or along the top wall near the ceiling. Open your refrigerator door and look for a small cylindrical or rectangular cartridge, often white or black, sometimes with a plastic housing around it. If you cannot spot it when ready, check your model's manual — the exact location varies between LG models, and some have the filter tucked behind a removable panel or grille.

Before you start, note the filter model number printed on the cartridge itself or on the housing. You will need this number to order a replacement. LG filters are model-specific, so buying the wrong one wastes money. The model number typically starts with "LT" or "ADQ" and appears on a label on the filter body.

Key Takeaways

  • LG refrigerator air filters are located in the upper back or top corner of the fridge compartment and should be replaced every six months or when the indicator light turns on.
  • Write down your filter's model number before ordering a replacement, because LG filters are not interchangeable across different refrigerator models.
  • Replacing the filter takes less than five minutes and requires no tools — you straightforward twist or slide the old one out and push the new one in.
  • After installing a new filter, reset the filter indicator light by pressing and holding the designated button for three to five seconds until the light goes off.

How to Remove the Old Filter

Turn off the ice maker before you begin. This prevents water from flowing through the filter while you are working. Most LG models have an ice maker switch on the control panel or inside the freezer — flip it to the off position.

Locate the filter and check whether it twists or slides. Most LG filters twist counterclockwise to release. Grip the filter firmly with both hands and turn it slowly to the left. You may feel resistance — this is normal. Keep turning until the filter stops and pulls free from its housing. If your model has a slide-out filter, look for a release button or tab on the side of the cartridge, press it, and slide the filter straight out toward you.

Water may drip from the filter or the housing when you remove it. Have a small bowl or towel ready to catch any spillage. Do not panic if water comes out — this means the system was working. Wipe the inside of the filter housing with a clean, dry cloth to remove any debris or sediment before you install the new filter.

Installing the New Filter

Unpack the new filter and remove any protective caps or plastic wrapping. Some LG filters come with a rubber gasket or O-ring already attached; others require you to transfer the gasket from the old filter. Check the old filter for a rubber ring around the threaded end or the sides. If one is present and the new filter does not have one, carefully remove the gasket from the old filter and slide it onto the new one. This gasket creates a watertight seal.

For twist-in filters, align the filter with the housing opening and push it in gently. Then twist it clockwise by hand until it stops — you should feel it seat firmly, but do not force it. Twisting too hard can crack the housing or damage the gasket. For slide-in filters, line up the cartridge with the slot and push it straight in until you hear or feel a click, indicating it has locked into place.

Turn the ice maker back on. Water should flow normally through the new filter within a few seconds. If no water comes out of the dispenser or ice maker after one minute, the filter may not be seated correctly. Remove it, check that the gasket is in place, and reinstall it.

Resetting the Filter Indicator Light

Most LG refrigerators have a filter indicator light on the control panel that turns on when the filter needs replacement. After you install a new filter, this light will not turn off automatically — you must reset it manually. The reset button is usually labeled "Filter Reset," "Water Filter," or has a water droplet icon.

Press and hold the reset button for three to five seconds until the light blinks or changes color. On some models, the light will turn off when ready; on others, it may blink once or twice before going dark. Release the button and check that the light has cleared. If the light remains on after holding the button for ten seconds, try pressing it again or consult your model's manual for the exact reset procedure.

When to Replace Your Filter

LG recommends replacing the air filter every six months under normal use. If you use the ice maker and water dispenser frequently, or if you have hard water, replace it every three to four months. The filter indicator light is your best guide — when it turns on, a replacement is due soon, even if you have not reached six months yet.

Do not ignore the indicator light. A clogged filter reduces water pressure, makes ice cubes smaller, and allows sediment and odors to pass into your drinking water. Replacing the filter on schedule keeps your water tasting fresh and your ice maker running smoothly.

Common Mistakes to Avoid

The most frequent error is buying the wrong filter model. Always check the model number on your old filter or in your refrigerator manual before ordering. Buying a generic "universal" filter often results in a poor fit, leaks, or water that bypasses the filter entirely.

Another common mistake is forgetting to reset the indicator light. The light will stay on even though you have installed a new filter, which makes it impossible to know when the next replacement is due. Set a phone reminder to reset the light when ready after installing the new filter.

Do not overtighten a twist-in filter. Hand-tightening is sufficient — using a wrench or pliers can crack the plastic housing or damage the internal seal. If water leaks from around the filter after installation, the gasket is probably not seated correctly. Remove the filter, check the gasket position, and reinstall it gently.

Frequently Asked Questions

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

Third-party filters designed for your specific LG model number may work, but LG brand filters are engineered to fit precisely and seal properly. If you choose an aftermarket filter, verify it is rated for your exact refrigerator model. A poor fit can cause leaks or allow unfiltered water to reach your dispenser.

What should I do if water leaks from the filter after I install it?

Turn off the ice maker when ready and remove the filter. Check that the rubber gasket is seated evenly around the entire filter. Wipe the inside of the housing clean and reinstall the filter, twisting or pushing it in slowly until it stops. If leaking continues, the gasket may be damaged — try installing a new filter.

How long does it take to replace an LG refrigerator air filter?

The entire process takes three to five minutes. Removing the old filter takes one minute, installing the new one takes two minutes, and resetting the indicator light takes one minute. No tools are required.

What if I cannot find the filter indicator light on my control panel?

Not all LG models have a light on the front panel. Some refrigerators display a filter status message on the digital display, or the indicator may be inside the refrigerator compartment near the filter itself. Check your model's manual for the exact location and how to reset it.

Can I clean and reuse my old air filter instead of replacing it?

No. LG air filters are designed to be replaced, not cleaned. Rinsing or vacuuming a used filter does not restore its filtering ability and may damage the media inside. Always install a new filter when the old one is due for replacement.