How to Replace the Air Filter on an LG Refrigerator: A Comprehensive, Step-by-Step Guide for Homeowners​

2025-12-03

Replacing the air filter on your LG refrigerator is a simple yet critical maintenance task that directly impacts your appliance’s performance, food freshness, and energy efficiency. Over time, air filters trap dust, debris, and odors, becoming clogged and less effective. A neglected filter forces your fridge to work harder, leading to higher energy bills, uneven cooling, and even spoilage of stored food. This guide will walk you through every step of the process—from recognizing when it’s time to replace the filter to ensuring the new one functions optimally—so you can keep your LG fridge running smoothly for years. Whether you’re a first-time homeowner or a seasoned appliance owner, this step-by-step approach will make the task straightforward and stress-free.

Why Replacing Your LG Refrigerator’s Air Filter Matters

Before diving into the “how,” let’s clarify the “why.” The air filter in your LG fridge serves two primary purposes:

  1. Air Quality Control: It captures airborne particles like dust, pet dander, and cooking odors, preventing them from circulating into your fridge and contaminating food.

  2. System Efficiency: A clean filter allows air to flow freely through the fridge’s cooling system, reducing strain on the compressor and ensuring consistent temperatures.

When the filter becomes clogged, airflow is restricted. This forces the fridge to run longer to maintain cool temperatures, increasing energy consumption by up to 15% in some cases. Worse, a dirty filter can lead to uneven cooling—think warm spots in the fridge or frost buildup in the freezer—putting your food at risk of spoilage. Over time, this strain can also shorten the lifespan of your appliance, leading to costly repairs or replacements.

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

LG refrigerators typically have two types of air filters: twin filters​ (common in newer models) or a single filter​ (found in older units). Regardless of type, most manufacturers recommend replacing the filter every 6 months to 1 year, depending on usage. However, several signs indicate it’s time to act sooner:

  • Visible Dirt or Debris: If you remove the filter and it’s covered in dust, hair, or grime, it’s past due for replacement.

  • Unusual Odors: A musty or stale smell in your fridge could mean the filter is no longer trapping odors effectively.

  • Increased Energy Bills: A sudden spike in your monthly electricity costs might stem from your fridge working harder due to a clogged filter.

  • Uneven Cooling: If some shelves feel warmer than others or frost accumulates in the freezer, restricted airflow is likely the culprit.

  • Filter Indicator Light: Many LG models have a “Filter Reset” or “Replace Filter” light that illuminates when replacement is needed. Check your user manual to locate this feature on your specific model.

Tools and Materials You’ll Need

Replacing the filter is a tool-light task, but having the right items on hand will streamline the process:

  • Replacement LG Refrigerator Air Filter: Match the model number of your current filter (found on the filter itself or in your fridge’s manual). Common LG filter part numbers include ADQ73595101, ADQ73595102, and ADQ83673101—always verify compatibility with your fridge model (e.g., LRFXC2416S, LRSC24171S).

  • Clean Cloth or Paper Towels: To wipe down the filter housing after removal.

  • Gloves (Optional): For those sensitive to dust or mold.

  • Screwdriver (Rarely Needed): Some older models may require a screwdriver to access the filter, but most modern LG fridges use snap-on or twist-lock filters.

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

Step 1: Locate the Air Filter​

The filter’s location varies by LG model, but it’s almost always in one of these areas:

  • Top of the Fridge: Many French door and side-by-side models have filters in the upper grille, behind a small cover. Gently pull or pry open the cover to access the filter.

  • Bottom of the Fridge: Some bottom-freezer models place the filter in the kick plate (the panel at the base of the fridge). Remove the kick plate by unscrewing the bottom screws or sliding it out, then locate the filter.

  • Inside the Fresh Food Compartment: A few compact or counter-depth models hide the filter in a drawer or on the side wall of the fridge interior. Check for a small access panel labeled “Air Filter.”

Pro Tip: Refer to your fridge’s user manual if you’re unsure—search online for “[Your LG Model Number] air filter location” if the manual is lost.

Step 2: Remove the Old Filter​

Once located, removing the old filter is usually straightforward:

  • Twist-and-Lock Filters: Grasp the filter and twist it counterclockwise (most common). It should pop out once released.

  • Snap-On Filters: Push the filter in slightly, then pull it straight out. Some models have a release tab; press it before pulling.

  • Screw-On Filters (Older Models): Use a screwdriver to loosen the screws securing the filter, then gently pull it free.

Note: Handle the old filter carefully—it may be dusty or contain mold spores. Dispose of it in a sealed trash bag to avoid spreading debris.

Step 3: Prepare the New Filter​

Before installing the new filter, take a moment to inspect it:

  • Ensure the packaging is intact (no tears or water damage).

  • Remove any protective plastic wrapping from the new filter.

  • Check the filter’s orientation—most have an arrow indicating airflow direction (usually pointing toward the back of the fridge). Misinstalling it backward will reduce efficiency.

Step 4: Install the New Filter​

With the old filter out and the new one ready, installation is the reverse of removal:

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

  • Snap-On: Slide the filter into the slot until you hear a snap, confirming it’s secure.

  • Screw-On: Position the filter and tighten the screws with a screwdriver (don’t overtighten—this can crack the housing).

After installation, wipe down the filter housing with a clean cloth to remove any leftover dust or fingerprints.

Step 5: Reset the Filter Indicator (If Applicable)​

Many LG fridges have a “Replace Filter” light that stays on even after installation. To reset it:

  • Open the fridge door and locate the control panel (usually on the top or front).

  • Press and hold the “Filter Reset” or “Replace Filter” button for 3–5 seconds. The light should turn off, confirming the reset.

  • If the light remains on, double-check that the filter is properly installed—sometimes a loose fit prevents the reset from registering.

Testing Your New Filter: How to Confirm It’s Working

After installation, run a quick test to ensure the new filter is functioning:

  1. Check Airflow: Stand near the filter housing and feel for steady airflow. A strong, consistent breeze means the filter isn’t blocked.

  2. Smell Test: Place a small piece of fruit or bread in the fridge overnight. If it smells fresh the next day, the odor-trapping function is working.

  3. Temperature Check: Use a fridge thermometer to verify all zones (fridge, freezer, crisper drawers) are maintaining their set temperatures (typically 35–40°F for the fridge, 0°F for the freezer).

Common Issues and Troubleshooting

Even with careful installation, you might encounter a few hiccups. Here’s how to address them:

  • Filter Leaks: If you notice water or cold air leaking around the filter, it’s likely not seated properly. Remove it, check for debris in the housing, and reinstall, ensuring a tight seal.

  • Indicator Light Still On: As mentioned, this often means the filter isn’t fully locked. Try twisting or pushing it in more securely. If the problem persists, contact LG support—there may be a sensor issue.

  • Reduced Cooling After Replacement: Wait 24 hours—sometimes the fridge needs time to adjust to the new filter. If the issue continues, check if the filter was installed backward (arrows should face the back).

Maintaining Your LG Refrigerator’s Air Filter Long-Term

Replacing the filter is just one part of upkeep. To maximize its effectiveness:

  • Vacuum Around the Filter Monthly: Use a soft brush attachment to remove dust from the housing, preventing debris from entering the system.

  • Avoid Blocking Vents: Keep food and containers away from the filter area to maintain unobstructed airflow.

  • Monitor Humidity: High humidity can cause mold growth on the filter. Wipe the housing with a mild vinegar solution (1:1 water-to-vinegar) every 3 months to prevent this.

Why Professional Help Isn’t Usually Necessary

While some homeowners hesitate to tackle appliance maintenance, replacing an LG fridge filter is a safe, DIY-friendly task. LG designs its filters for easy access, and the steps above apply to most models. However, if you’re uncomfortable working with appliances or notice complex issues (e.g., a cracked filter housing or persistent error codes), contacting a certified LG technician is always an option.

Final Thoughts: Protect Your Fridge, Protect Your Food

Replacing your LG refrigerator’s air filter is a small investment that pays off in fresher food, lower energy bills, and a longer-lasting appliance. By following this guide—whether you’re replacing it for the first time or adding it to your regular maintenance routine—you’ll ensure your fridge runs efficiently and keeps your groceries in peak condition. Remember: a clean filter isn’t just about convenience; it’s about safeguarding the food your family relies on.

Now that you know how to replace the air filter on your LG refrigerator, mark your calendar for the next replacement (every 6–12 months) and enjoy the peace of mind that comes with a well-maintained appliance.

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