How to Replace Your LG Refrigerator Air Filter: A Step-by-Step Guide for Homeowners​

2025-10-23

If you own an LG refrigerator, regular air filter replacement is critical to maintaining fresh food, optimal cooling performance, and energy efficiency. Over time, the filter traps dust, allergens, food odors, and mold spores—eventually becoming clogged and less effective. Ignoring this task can lead to funky smells, reduced cooling power, higher energy bills, and even bacterial growth. This guide walks you through everything you need to know to replace your LG fridge’s air filter correctly, whether you’re a first-time homeowner or a seasoned pro.

Why Replacing Your LG Refrigerator Air Filter Matters More Than You Think

The air filter in your LG refrigerator isn’t just a “nice-to-have”—it’s a workhorse that impacts both food safety and your wallet. Here’s why it deserves your attention:

1. It Keeps Your Food Fresh and Safe

Your fridge’s air filter works like a silent guardian, capturing airborne particles that can spoil food or spread germs. As it clogs, airflow slows, allowing odors from spoiled produce, raw meat, or strong cheeses to linger. Worse, trapped moisture and organic matter can foster mold and bacteria, which may contaminate your groceries. A fresh filter ensures clean, odor-free air circulates, keeping fruits, vegetables, and leftovers fresher longer.

2. It Protects Your Fridge’s Cooling Efficiency

A clogged filter forces your refrigerator’s compressor to work harder to push air through the system. This extra strain increases energy consumption—by up to 15% in some cases—and shortens the lifespan of your appliance. Over months or years, this translates to higher utility bills and costly repairs.

3. It Prevents Moisture Buildup

When airflow is restricted, condensation can accumulate inside the fridge, leading to frost buildup in the freezer or water pooling on shelves. A new filter restores proper airflow, reducing these issues and making cleanup a breeze.

How to Tell When It’s Time to Replace Your LG Refrigerator Air Filter

LG recommends replacing the air filter every 6 months under normal use. But life isn’t always “normal,” so watch for these signs that it’s time:

1. The Replacement Indicator Light Turns On

Most modern LG fridges have a smart indicator light (often labeled “Filter” or “Air Filter”) that blinks or turns red when the filter needs changing. Check your model’s manual to locate this feature—it’s the easiest way to stay on schedule.

2. You Notice Unpleasant Odors

If your fridge suddenly smells musty, sour, or like last week’s leftovers (even after wiping down shelves), a clogged filter is likely trapping odors instead of neutralizing them.

3. Cooling Performance Drops

Are some shelves warmer than others? Or does it take longer for ice to form in the freezer? A struggling filter forces the fridge to overwork, leading to uneven cooling.

4. Water Dispenser Flow Slows (If Applicable)

Many LG fridges integrate the air filter with the water filtration system. If your water dispenser trickles instead of flows, a clogged filter might be blocking water flow—even if you just replaced the water filter.

Tools and Materials You’ll Need for the Replacement

Before you start, gather these items to ensure a smooth process:

  • ​Replacement LG air filter: Match the model number. You can find this on the old filter (look for a sticker with letters/numbers like “LRFXC2416S” or “ADQ36006101”) or in your fridge’s manual. If unsure, check LG’s website using your fridge’s serial number.

  • ​Gloves: Optional but recommended to avoid touching dirty filters.

  • ​Soft cloth or paper towel: To wipe away dust or condensation.

  • ​Flashlight: Helpful for spotting hidden release buttons or clips.

Step-by-Step Guide to Replacing Your LG Refrigerator Air Filter

LG refrigerators come in dozens of models, but most filters install similarly. We’ll break down the process by common filter locations: top-mounted, bottom-drawer, and side-panel designs.

​Step 1: Turn Off Power (Optional but Safer)​​

While many LG fridges don’t require unplugging, it’s wise to turn off the ice maker and water dispenser (if applicable) or unplug the fridge briefly. This prevents accidental water leaks or electrical issues.

​Step 2: Locate the Filter Compartment​

  • ​Top-Mounted Filters: Common in larger French-door models. Look for a small cover or button near the top of the fridge interior, often above the top shelf.

  • ​Bottom-Drawer Filters: Found in bottom-freezer models. Open the crisper drawers or look for a dedicated “filter” access panel in the bottom kick plate.

  • ​Side-Panel Filters: Less common but used in some compact or counter-depth models. Check the right or left side of the fridge interior, near the back wall.

​Step 3: Remove the Old Filter​

  • ​Twist-and-Release Models: Grip the filter firmly and twist counterclockwise (usually ¼ to ½ turn) until it loosens. Pull straight out.

  • ​Push-and-Release Models: Press the release tab or button (often red or blue) while pulling the filter straight out. Some models click when released.

  • ​Snap-On Models: Wiggle the filter to dislodge it from its housing—no twisting required.

Pro Tip: If the filter feels stuck, don’t force it. Check for hidden clips or use a flashlight to spot any locking mechanisms. Forcing it could break the housing.

​Step 4: Prepare the New Filter​

Remove the plastic packaging from the new filter. Most LG filters have a directional arrow or “FLOW” label—align this with the airflow direction (usually toward the back of the fridge).

​Step 5: Install the New Filter​

  • ​Twist-and-Lock: Insert the new filter into the housing and twist clockwise until it clicks into place.

  • ​Push-and-Snap: Slide the filter in until you hear a loud click—this confirms it’s secure.

  • ​Slide-On: Push the filter firmly into the housing until it sits flush with the surrounding trim.

​Step 6: Test and Reset​

Close the filter compartment cover (if applicable) and plug the fridge back in (if you unplugged it). Run the ice maker for 10–15 minutes to clear any air bubbles. Finally, reset the replacement indicator light: press and hold the “Filter” button for 3–5 seconds until it turns off.

What to Do After Replacing Your LG Refrigerator Air Filter

Even with a new filter, take these steps to ensure optimal performance:

1. Check for Leaks

If your fridge has an ice maker or water dispenser, run water for a few minutes to confirm steady flow. A sudden gush or drip could mean the filter isn’t seated properly—remove and reinstall it.

2. Monitor Odors and Cooling

For the next 24–48 hours, keep an eye (and nose) on your fridge. If odors persist, wipe down shelves with a mild vinegar-water solution (1:1 ratio) to remove lingering smells. If cooling issues continue, double-check the filter installation or contact LG support.

3. Set a Replacement Reminder

Mark your calendar or set a phone alert for 6 months from now. Consistency is key—missing a replacement negates all the benefits.

Common Questions About LG Refrigerator Air Filter Replacement

Q: Can I use a non-LG filter?

A: Some third-party filters claim compatibility, but LG designs its filters to match exact airflow and filtration specs. Using off-brand filters may reduce efficiency, allow odors to pass through, or damage the fridge’s internal components. Stick with genuine LG filters for best results.

Q: My filter won’t budge—what now?

A: First, confirm you’re pulling in the right direction (some twist, others push). If it’s still stuck, try gently rocking the filter back and forth. If all else fails, unplug the fridge and let it sit for 10 minutes—sometimes temperature changes loosen the seal.

Q: Why does my fridge still smell after replacing the filter?

A: The filter traps odors, but it doesn’t eliminate existing ones. Wipe down all interior surfaces, including door seals, with a baking soda-water solution (1 tbsp baking soda per cup of water) to neutralize lingering smells. Also, check if expired food is hiding in a back corner.

Q: How do I dispose of the old filter?

A: Most LG filters are made of plastic and activated carbon. Seal the old filter in a plastic bag and toss it in the trash. Avoid recycling unless your local program explicitly accepts appliance filters—many don’t due to contamination risks.

Final Thoughts: Keep Your LG Fridge Running Smoothly, One Filter at a Time

Replacing your LG refrigerator’s air filter is a quick, low-cost task that pays off in fresher food, lower energy bills, and a longer-lasting appliance. By following this guide—whether your model has a top-mounted, bottom-drawer, or side-panel filter—you’ll avoid common pitfalls and keep your fridge performing at its best.

Remember: set reminders, stick to the 6-month schedule, and never ignore warning signs like odors or slow cooling. Your fridge (and your groceries) will thank you.

Now grab that new filter, roll up your sleeves, and get to work—your future self (and your milk, veggies, and ice cream) will be glad you did.

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