How to Change Your LG Refrigerator Air Filter: A Comprehensive, Step-by-Step Guide for Homeowners

Changing the air filter in your LG refrigerator is one of the simplest yet most impactful maintenance tasks you can perform to keep your appliance running efficiently, your food fresh, and your kitchen smelling clean. Over time, filters trap dust, debris, food odors, and even mold spores, and failing to replace them can lead to reduced cooling performance, lingering smells, and even bacterial growth. This guide will walk you through everything you need to know—from why replacement matters to selecting the right filter, locating it on your model, and completing the swap safely—so you can tackle this task with confidence.

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

Your LG fridge’s air filter isn’t just a convenience; it’s a critical component of its functionality. Here’s why regular replacement is non-negotiable:

1. It Keeps Your Food Fresh Longer

The filter works by trapping airborne particles that can settle on fruits, vegetables, meats, and dairy. Without a clean filter, these particles circulate, accelerating spoilage and causing food to lose flavor or texture faster. For families who stock up on groceries weekly, a fresh filter means less waste and more reliable storage.

2. It Eliminates Unpleasant Odors

From spilled milk to strong-smelling leftovers, odors can linger in your fridge and transfer to other foods. The activated carbon in most LG filters absorbs these odors, preventing “fridge smell” from taking over. A clogged filter loses this ability, leaving you with a space that smells stale or sour.

3. It Improves Energy Efficiency

A dirty filter forces your refrigerator’s compressor to work harder to circulate air. This extra strain increases energy consumption—an average dirty filter can raise your bill by 5–10% annually—and shortens the lifespan of your appliance by putting stress on its components.

4. It Prevents Moisture and Mold Buildup

Trapped particles in a saturated filter create a breeding ground for mold and mildew. Not only does this affect air quality, but mold spores can spread to shelves, drawers, and even your food. Regular replacement stops this cycle before it starts.

How Do You Know When It’s Time to Replace Your LG Fridge Air Filter?

LG recommends replacing most refrigerator air filters every 6–12 months, but several factors can adjust this timeline. Here’s how to tell if yours needs changing now:

Check the Filter’s Appearance

Pull out the old filter (we’ll cover how later) and hold it up to the light. If it’s covered in dark dust, grime, or discoloration, it’s past its prime. Even if it looks “okay,” if it’s been 12 months, replace it—debris can clog microscopic pores you can’t see.

Listen for Changes in Your Fridge’s Performance

A struggling filter may cause your fridge to run louder than usual as it works harder to pull air through the clogged media. You might also notice warm spots on shelves or slower cooling after adding new items.

Look for Indicator Lights

Many LG models have a “Filter Reset” or “Replace Filter” light on the control panel. This usually turns on after 6–12 months of use, though it can be reset manually—don’t rely on it alone; pair it with visual checks.

Consider Your Usage Habits

If you open the fridge door frequently, store pungent foods (like garlic or fish), or live in a humid climate, your filter will fill up faster. In these cases, aim to replace it every 4–6 months.

Step 1: Gather Your Supplies and Locate the Filter

Before you start, you’ll need:

• A replacement LG refrigerator air filter (more on selecting the right one below).

• A soft, damp cloth (to wipe the filter housing).

• A dry paper towel (to handle the old filter).

Finding the Filter on Your LG Refrigerator

Filter locations vary by model, but they’re typically in one of three places:

Top-Mounted Filters (Common in French Door Models)

Look inside the fridge, near the top shelf, behind a small panel or louvered cover. Some models have a button or tab to press for easy access.

Bottom-Mounted Filters (Found in Side-by-Side or Bottom-Freezer Models)

Check the base of the fridge, often behind a kick plate (a removable panel at the bottom front). You may need to unscrew the kick plate or slide it out to access the filter.

Drawer-Mounted Filters (Less Common, Used in Some Compact Models)

These are built into a drawer, often labeled “Air Filter” or “Fresh Flow.” Pull the drawer out to reach the filter slot.

Pro Tip:If you’re unsure, check your fridge’s user manual (available online via LG’s support site if you’ve lost the physical copy) or search for “[Your Model Number] air filter location” on LG’s official website.

Step 2: Select the Right Replacement Filter

Not all LG fridge filters are created equal. Using the wrong model can lead to poor filtration, leaks, or even damage to your appliance. Here’s how to choose:

Match the Filter Number

Every LG filter has a part number, usually printed on the side of the old filter (e.g., “LRFXC2416S” or “AO Smith LA500”). This number is your best bet—search for it directly on LG’s site, Amazon, or appliance retailers like Best Buy.

Understand Filter Types

LG offers two main types:

• Standard Disposable Filters:​ These are pre-treated with activated carbon and last 6–12 months. They’re affordable and widely available.

• Washable Reusable Filters:​ A few high-end models use these. They have a foam or mesh core you can rinse with water every 3–6 months. Note: They still require periodic replacement of the carbon layer, so they’re not truly “lifetime.”

Avoid Third-Party “Universal” Filters:While some generic filters claim compatibility, they often don’t meet LG’s filtration standards. Stick to OEM (Original Equipment Manufacturer) parts for guaranteed performance.

Step 3: Replace the Filter—Detailed, Model-Agnostic Instructions

Once you have the right filter, follow these steps to swap it safely:

1. Power Down (Optional but Recommended)

While most LG fridges don’t require unplugging to change the filter, turning off the ice maker or switching the fridge to “Demo Mode” (if available) prevents air from rushing out during the swap.

2. Open the Filter Housing

For top-mounted filters: Press the release tab or button on the cover and lift it off. For bottom-mounted filters: Remove the kick plate (use a screwdriver if needed) to expose the filter slot.

3. Remove the Old Filter

Grasp the filter firmly and pull straight out. It may be attached to a hose or wiring—don’t yank; twist gently if it’s snug. Place the old filter in a plastic bag to dispose of later (wrap it to contain dust).

4. Prepare the New Filter

Remove any packaging from the new filter. Most have a directional arrow (labeled “FLOW” or “IN”) indicating which way to insert it—align this with the housing to ensure proper airflow.

5. Insert the New Filter

Push the filter into the housing until it clicks or sits flush. If it’s hose-connected, make sure the seal is tight to prevent leaks.

6. Close the Housing and Reset the Indicator

Snap the cover back into place (or reattach the kick plate). Locate the “Replace Filter” light on your control panel and press the “Reset” button—this tells your fridge the filter is new and resets the 6–12 month timer.

Step 4: Test Your Fridge and Address Common Issues

After replacement, let your fridge run for 2–3 hours to circulate air through the new filter. Here’s what to check:

No Cold Air?

If your fridge feels warm, double-check that the filter is fully seated—air leaks around a loose filter can disrupt cooling. Also, ensure the condenser coils (located at the back or bottom of the fridge) are clean; dusty coils make the compressor work harder.

Still Smelling Odd?

A new filter should reduce odors within a day. If smells persist, check other sources: wipe down shelves with vinegar, clean the drain pan under the fridge, or inspect for spoiled food hidden in crisper drawers.

Filter Leaking?

If water or air is leaking around the filter, the seal may be damaged. Remove the filter, check for debris in the housing, and reinsert it at a slight angle to ensure a tight fit. If leaks continue, contact LG support—your model may have a defective housing.

Maintenance Tips to Extend Your Filter’s Life (and Your Fridge’s)

While replacement is key, these habits will keep your filter—and fridge—performing better:

• Wipe the Housing Monthly:​ Use a damp cloth to remove dust from the filter area. This prevents debris from entering the system when you change the filter.

• Keep the Fridge Full (But Not Overcrowded):​ A full fridge maintains cold air better, reducing the workload on the filter. Leave space for air to circulate, though—overpacking traps odors.

• Clean Spills Immediately:​ Liquids or food particles that seep into the fridge can clog the filter faster. Wipe up messes with a mild detergent to prevent buildup.

Final Thoughts: Why This Task Is Worth Your Time

Changing your LG refrigerator air filter takes 10–15 minutes, costs $20–$50 annually, and prevents far costlier issues like compressor failure or food waste. By following this guide—whether you’re a first-time DIYer or a seasoned homeowner—you’ll keep your fridge running smoothly, your food fresh, and your kitchen smelling great. Remember: when in doubt, consult your model’s manual or reach out to LG’s customer support for model-specific advice. Your future self (and your groceries) will thank you.