LG LT120F Air Filter Replacement Guide

Does your refrigerator smell like last night's leftovers — or a mix of everything inside? Stale air and strong food odors are common problems in modern fridges. The LG LT120F air filter replacement is a simple fix that helps remove those unwanted smells and keeps the air inside your refrigerator clean and fresh. If your fridge smells off or your filter light is on, this guide is for you.

What Is the LG LT120F Air Filter?

The LG LT120F is a fresh air filter for LG refrigerators. It helps reduce unwanted food odors inside the refrigerator compartment. Unlike a water filter, it purifies air only.

LG LT120F air filter replacement with original package and charcoal filter for LG refrigerators on a white background.

When food sits in your fridge, strong smells can spread from one item to another. The LT120F helps slow that process by keeping the air inside cleaner. The result is a fresher-smelling refrigerator and food that is less likely to absorb odors from nearby items.

LG LT120F air filter reducing refrigerator food odors and airborne impurities to keep fruits, vegetables, and fresh food cleaner.
🌬️

Odor Reduction

Helps remove unwanted food smells from inside your fridge

📅

6-Month Replacement

Replace every 6 months or when the filter alert light turns on

🔄

Easy Twist Installation

No tools needed, just twist and replace in seconds

🥦

Helps Keep Food Fresh

Helps protect food from absorbing strong odors from other items

When Should You Replace It?

Replace the LT120F air filter every 6 months. A used filter absorbs less odor, resulting in faster odor buildup in your fridge.LG LT120F air filter replacement every 6 months inside refrigerator with filter cover and cartridge.

You should replace the filter if:
  • The air filter indicator light on your refrigerator turns on.
  • Your refrigerator has a noticeable odor even after cleaning.
  • Replace the filter if 6 months have passed since the last change.
  • If food in the fridge absorbs smells from other items, replace the filter.

What happens if you don't change the air filter in your refrigerator?

If you don't replace the air filter, food odors can linger and mix, reducing air circulation and causing food to spoil faster.Refrigerator air filter neglect infographic showing lingering food odors, reduced air circulation, and ethylene buildup causing produce to spoil faster.

Before you order, always check the model number of your refrigerator. You can usually find it:
  • On a label inside the refrigerator compartment (often on the side wall or ceiling)
  • On the original purchase receipt or owner's manual
  • On the back of the refrigerator

⚠️ Important Note

Always verify compatibility using your refrigerator model number before purchasing. Some LG refrigerators use a different air filter, or none at all.

How to Replace LG LT120F — Step-by-Step Guide

Replacing the LG LT120F is quick and easy. You do not need any tools. The whole process takes less than a minute. Here is how to replace the LG LT120F in six simple steps:


1

Turn the cover counterclockwise

Rotate the filter cover counterclockwise to release the tabs and remove the cover.
Line art showing how to open and close an LG LT120F refrigerator air filter cover during replacement.
2

Remove the old LT120F filter

Remove the filter from the inside of the cover by pressing the side of the filter in and pulling the center out.
Line art showing how to insert and lock the LG LT120F refrigerator air filter cartridge into the filter cover.
3

Place the new filter inside the cover

Place the new filter inside the cover with the side that says FRONT facing outward.

LG LT120F refrigerator air filter cartridge placed inside the open filter cover during replacement installation.

4

Align cover tabs with wall hooks

Align tabs 1 on the filter cover with hooks 2 on the refrigerator wall.

Line art showing how to align and attach the LG LT120F air filter cover inside a refrigerator during replacement installation.

5

Reinstall the cover and turn it clockwise

Rotate the air filter cover clockwise until the hooks engage and the cover locks in place.

Line art showing how to close and lock the LG LT120F refrigerator air filter cover after installing the replacement cartridge.

6

Reset the air filter indicator if needed

Press and hold the Fresh Air Filter button on the control panel for 3 seconds to reset the filter sensor.

LG refrigerator display showing Fresh Air Filter reset after replacing the LT120F air filter.

⏱ Total Time: 3–5 minutes

How to Reset the Air Filter Light

After you replace the filter, the indicator light on your refrigerator may still show that a replacement is needed. You need to reset it manually.

Most LG refrigerators have an Air Filter Reset button on the control panel, either inside the fridge or on the door display. To reset it:

  • Locate the Air Filter or Filter Reset button on your control panel
  • Press and hold the button for 3 to 5 seconds until the light resets
  • The indicator should turn off or change color to confirm the reset

The exact button name and location can vary by model. Check your refrigerator's owner's manual if you are not sure which button to press.

LG refrigerator air filter reset instructions showing how to press and hold the Air Filter button for 3–5 seconds after replacing the LT120F filter.

Common Replacement Mistakes to Avoid

Most people replace the LT120F without any problems. But a few common mistakes can cause issues. Here is what to watch out for:

  • Buying without checking your refrigerator model. Not all LG fridges use the LT120F. Always confirm your model number first.
  • Forgetting to reset the filter light. The light will not turn off on its own. You need to reset it after installing the new filter.
  • Install the filter cover loosely. Make sure the cover is fully locked in place. A loose cover means the filter is not seated correctly.
  • Waiting too long to replace the old filter. A worn-out filter cannot do its job. Replace it on schedule every 6 months, even if the light has not turned on yet.
  • Confusing an air filter with a water filter. These are two different parts. The LT120F is an air filter. It does not filter water. Your water filter is a separate component.
LG LT120F air filter replacement mistakes infographic showing model check, filter light reset, cover lock, 6-month schedule, and air filter vs water filter warning.

Ready for a Fresher Fridge?

Need a fresh replacement? Shop the LG LT120F air filter replacement today and keep your refrigerator smelling clean.

Shop LG LT120F Filter →

Where to Buy Replacement Air Filters


⭐ Fits Your Fridge (Best Value)

Competitive pricing, expert guidance, fast shipping, and quality assurance.

🧰 Manufacturer Direct

Guaranteed compatibility, higher price point, official warranty.

🏪 Big Box Stores

Immediate availability, limited selection, higher prices.

🛒 Online Marketplaces

Wide selection, variable quality — check certifications carefully.

What to Look For: Exact model number match · NSF certification · Customer reviews · Return policy · Expiration date

Browse All Refrigerator Air Filters →

Frequently Asked Questions

What are you looking for?
∨

How often should I replace the LG LT120F air filter?

Replace your LG LT120F refrigerator air filter every six months, or whenever the “Filter” alert light turns on your refrigerator’s control panel.

∨

How do I know if my LG LT120F air filter needs replacing?

You will know it is time when the filter indicator light begins flashing or displays a “Replace Filter” warning. Lingering odors inside your fridge are also a clear sign the filter is saturated.

∨

Can I replace the LG LT120F myself?

Yes. It is a quick, tool-free process that takes only a few minutes.

∨

Does the LT120F filter water?

No. The LG LT120F is an air filter only. It does not filter water. Your water filter is a separate component.

∨

What happens if I do not replace the air filter?

A clogged filter restricts airflow, causing food odors to linger and mix, and food to spoil faster.

∨

Where is the LG refrigerator air filter located?

In most LG refrigerators, the air filter is inside the fresh food compartment at the top-back center, usually inside a circular plastic housing.

∨

How do I reset the LG air filter light?

Press and hold the Air Filter or Fresh Air Filter button on the control panel for 3 seconds until the light resets.

∨

Is LT120F the same as an LG fresh air filter?

Yes. The LT120F is a specific model of the LG Fresh Air Filter.

0 comments

Leave a comment