How to Open and Clean the Fresh Air Filter on Your LG Refrigerator

Where the Fresh Air Filter Is Located

The fresh air filter on an LG refrigerator sits inside the fridge compartment, usually on the back wall or side wall near the top. On most models, you'll see a small cylindrical or rectangular cartridge that looks like it's recessed into the wall. The exact location varies by model — some LG refrigerators have it on the left side, others on the right, and a few place it higher up near the ceiling of the fridge section.

Before you start, check your model number (it's on a sticker inside the fridge, usually on the side wall or ceiling) and look it up in your manual or on LG's website. This takes two minutes and tells you exactly where yours sits. If you can't find the manual, LG's support site lets you search by model number and download the PDF for free.

Key Takeaways

• The fresh air filter cartridge is usually a small cylinder or rectangle on the back or side wall of your fridge compartment, often near the top.
• Most LG models let you twist or pull the filter straight out by hand — no tools needed.
• Clean the filter every three to six months by rinsing it under cool running water or vacuuming it gently; do not soak it.
• If the filter is cracked, discolored, or no longer holds its shape after cleaning, replace it with an LG-brand cartridge for your specific model.
• A clogged or dirty filter reduces airflow and makes your fridge work harder, so regular cleaning keeps it running efficiently.

How to Remove the Filter Cartridge

Most LG refrigerators use one of two removal methods. The first is a simple twist-out: grasp the filter cartridge firmly and turn it counterclockwise (left) until it comes free. The second is a straight pull: grip the cartridge and pull it straight toward you. Neither method requires force — if you're straining, you may have the wrong grip or the wrong part.

If your model has a plastic collar or ring around the filter, that collar may need to turn first. Twist the collar counterclockwise, then the cartridge should come free. Some newer LG models have a small tab or button on the filter housing; press or slide that tab while you pull the cartridge out.

Once the cartridge is out, you'll see the filter chamber — a small cavity in the fridge wall. This is where dust and particles collect, so wipe the inside of the chamber with a dry cloth before you put the filter back in.

Cleaning vs. Replacing the Filter

Fresh air filters in LG refrigerators are designed to be cleaned and reused, not thrown away after one use. Every three to six months, remove the cartridge and rinse it under cool running water. Hold it under the tap and let water flow through the filter material — do not soak it, and do not use hot water, which can damage the filter media.

If the filter is very dusty, you can also vacuum it gently with a soft brush attachment. Hold the cartridge upright and move the brush lightly across the surface. This removes surface dust without forcing particles deeper into the filter material.

After cleaning, let the filter air-dry completely before putting it back in. This usually takes 30 minutes to an hour. A wet filter can harbor mold and won't work as well as a dry one.

Replace the filter with a new LG cartridge if it's cracked, has visible holes, is permanently discolored, or no longer holds its shape after cleaning. Replacement cartridges are model-specific, so order by your refrigerator's model number. They typically cost between $20 and $50 depending on the model.

Reinserting the Filter Correctly

Once the filter is clean and dry, push it back into the chamber. If your model uses a twist-in cartridge, align it with the slot and turn it clockwise (right) until it stops. You should feel a slight resistance, but it should not require force. If it's a pull-out style, simply push it straight in until it seats fully in the chamber.

Some LG models have a small indicator light or mark on the filter housing that shows when the cartridge is seated correctly. Line up any marks or arrows before you finish. After reinsertion, close the fridge door and listen — you should hear normal operation, not grinding or unusual sounds.

Why the Fresh Air Filter Matters

The fresh air filter pulls odors and ethylene gas (which speeds up food spoilage) out of your fridge and replaces them with fresh air from outside the unit. When the filter gets clogged with dust and particles, airflow drops. Your compressor has to work harder to maintain temperature, which uses more energy and can shorten the life of the refrigerator.

A clean filter also keeps your food fresher longer. Ethylene gas is what makes produce ripen and decay faster; removing it slows that process. If you notice your vegetables wilting faster than they should, or if your fridge smells stale even after cleaning, a dirty filter is often the culprit.

Troubleshooting Common Problems

If the filter won't come out, you may be turning it the wrong direction. Try the opposite way — if counterclockwise didn't work, try clockwise. If it still won't budge, stop and check your manual; some models have a release button or tab you need to press first. Forcing a stuck filter can crack it or damage the housing.

If you put the filter back in and it won't seat properly, remove it and check the chamber for debris. A small piece of plastic or a speck of dust can prevent the cartridge from sliding all the way in. Wipe the chamber again and try reinserting the filter.

If your fridge still smells bad after cleaning the filter, the odor may be coming from spilled food or a clogged drain. Check the drain hole at the bottom of the fridge (usually on the back wall) and flush it with warm water using a turkey baster or small syringe. Trapped water and food particles in the drain create strong smells that a fresh air filter alone cannot fix.

Frequently Asked Questions

How often should I clean the fresh air filter?

Clean it every three to six months, depending on how much dust is in your kitchen. If you have pets, live in a dusty area, or keep the fridge in a garage, clean it every three months. In a clean kitchen, every six months is usually enough. A quick visual check when you open the fridge can tell you if it looks clogged.

Can I wash the filter with soap?

No. Use only cool running water. Soap residue can clog the filter material and reduce airflow. If the filter is very dirty, rinse it longer under the tap or use a soft brush to loosen the dust, then rinse again.

What if my LG refrigerator doesn't have a fresh air filter?

Older LG models and some compact or French-door models do not have a fresh air filter. Check your manual or look inside the fridge compartment near the top and back walls. If you don't see a small cartridge, your model likely uses a different air circulation system.

Where do I buy a replacement filter for my LG refrigerator?

LG replacement filters are sold on LG's official website, Amazon, and major appliance retailers like Best Buy and Lowe's. Always order by your refrigerator's model number to ensure you get the correct cartridge. Third-party filters are cheaper but may not fit as well or perform as well as LG-brand cartridges.

Does a dirty filter cause the fridge to freeze food?

Not directly, but a clogged filter can affect airflow distribution, which may cause cold spots in some areas of the fridge. If you notice food freezing in one spot, clean the filter first, then check that the vents inside the fridge are not blocked by food or containers.