How to Replace Air Filter in LG Refrigerator​

2025-11-28

Replacing the air filter in your LG refrigerator is a simple, essential maintenance task that typically takes less than five minutes to complete. The process involves locating the filter compartment, removing the old filter, unpacking the new one, inserting it, and finally, resetting the filter indicator light to ensure accurate tracking for the next change. Performing this task every six months is crucial for maintaining optimal food freshness and ensuring the efficient operation of your appliance.

Understanding the Importance of Your LG Refrigerator's Air Filter

Modern LG refrigerators, especially French door and side-by-side models, are equipped with an air filtration system. The primary role of the ​air filter​ is to circulate clean air inside the fresh food compartment. It works to neutralize odors that can transfer between different foods, preventing your strawberries from tasting like last night's onion. This is not just about odor control; a clean filter ensures proper air circulation, which helps maintain consistent temperatures and humidity levels throughout the refrigerator. This consistency is key to preserving the quality and extending the shelf life of your fruits, vegetables, and other perishables.

Neglecting to replace the filter leads to a decline in performance. A clogged, old filter cannot circulate air effectively. You might notice that odors become more pronounced, or that some areas of the fridge feel warmer than others. Furthermore, a struggling filtration system can cause the refrigerator's compressor to work harder, potentially leading to higher energy bills. Therefore, replacing the air filter is a small investment in the health of your food and the efficiency of your appliance.

Identifying the Correct Air Filter for Your LG Refrigerator

Before you begin, you must purchase the correct replacement filter. Using an incompatible filter can result in poor performance or even damage. LG refrigerators use a few different filter models, so it is vital to find the one designed specifically for your unit.

The most reliable way to find the correct part number is to check the existing filter you are about to replace. The part number is printed directly on the filter housing. Common LG air filter models include ​LT1000P, ​LT800P, and ​LT700P. If the old filter is not available for reference, you can find the model number of your refrigerator itself. The refrigerator's model number is usually located on a sticker inside the main refrigerator compartment, often on the side wall or on the ceiling. Once you have the refrigerator's model number, you can enter it on the LG website or any reputable appliance parts retailer's website to find the compatible air filter.

It is strongly recommended to use ​genuine LG replacement filters. While third-party or generic filters might be less expensive, they may not meet the same performance standards. Genuine LG filters are certified to fit perfectly and provide the level of odor filtration promised by the manufacturer. Using non-genuine parts could also affect your refrigerator's warranty.

Step-by-Step Guide to Replacing the Air Filter

The process is straightforward and requires no tools. The filter compartment is typically located at the top rear of the fresh food compartment.

  1. Locate the Filter Compartment:​​ Open the refrigerator door and look at the back ceiling of the main compartment. You will see a small rectangular cover or a section that looks like it can be pressed or pivoted. This is the filter compartment.

  2. Remove the Old Filter:​​ Press the button or gently push on the compartment cover to release it. The cover will either swing down or come off entirely. Behind it, you will see the end of the air filter. Simply grasp the filter and pull it straight out. Some models might have a filter that is inserted sideways; in this case, you may need to turn it slightly before pulling it out.

  3. Prepare the New Filter:​​ Unpack your new, genuine LG air filter. Remove any plastic packaging. You may notice a protective cover or a tag on the filter; be sure to remove it as instructed in the filter's manual.

  4. Insert the New Filter:​​ Align the new filter with the slot. There are usually arrows or markings on the filter indicating the correct orientation. Slide the filter completely into the compartment until it stops and is seated firmly.

  5. Close the Compartment:​​ Swing the cover back into place or snap it shut until you hear a click, ensuring it is secure.

Resetting the Air Filter Indicator Light

After replacing the physical filter, you must reset the indicator light on your refrigerator's control panel. This light is not automatically connected to the filter; it is a timer that alerts you every six months. If you do not reset it, it will continue to remind you even though you have already installed a new filter. The reset procedure varies slightly by model but generally follows one of these patterns:

  • For models with a "Filter" button:​​ Press and hold the "Filter" button on the control panel for approximately 3 to 5 seconds. You will see the indicator light turn off or change color, confirming the reset is complete.
  • For models with a multi-function button:​​ If your refrigerator does not have a dedicated "Filter" button, look for a button labeled "Light," "Temp," or "Lock." Press this button repeatedly until the filter indicator light is selected or begins to flash. Then, press and hold the same button for about 3 seconds to clear the alert.

If you cannot locate the correct button sequence, refer to your refrigerator's user manual for model-specific instructions. Resetting this light is a critical final step to ensure the system accurately tracks the next recommended replacement date.

When and How Often to Replace the Filter

LG recommends replacing the air filter every six months. However, this is a general guideline. If you store particularly strong-smelling foods frequently, you may need to replace it more often. The filter indicator light on the control panel is your best guide. It will typically illuminate when six months have passed, signaling that it is time for a replacement. Some advanced models may even have a two-stage alert, where the light changes color as the filter gets closer to the end of its life.

It is a good practice to write the installation date on the side of the new filter with a permanent marker. This provides a physical backup reminder in case the indicator light is accidentally not reset.

Troubleshooting Common Issues

Even with a simple task, minor issues can arise. Here are solutions to common problems:

  • The filter is stuck and won't come out:​​ Do not force it. Double-check that you have fully released the compartment cover. Sometimes, the filter can get wedged. Try wiggling it gently from side to side while pulling. Forcing it could break the compartment housing.
  • The new filter won't go in all the way:​​ Ensure the filter is oriented correctly. The arrows on the filter should point in the direction of insertion. Also, verify that you have the correct filter model for your refrigerator, as an incompatible filter will not fit properly.
  • The indicator light won't reset after replacing the filter:​​ First, confirm that you are following the correct procedure for your specific model by checking the user manual. Ensure that the refrigerator door is completely closed when you attempt the reset. If the light still will not turn off, try unplugging the refrigerator for one minute and then plugging it back in. This can sometimes reset the control board. If the problem persists, there may be an issue with the control panel itself.

Conclusion: A Five-Minute Task for Long-Term Benefits

Replacing the air filter in your LG refrigerator is one of the easiest and most effective ways to maintain the appliance. This quick, biannual task ensures your food stays fresher longer by controlling odors and maintaining proper temperature and humidity. By using a ​genuine LG air filter​ and faithfully resetting the indicator light, you are investing in the performance, efficiency, and longevity of your refrigerator. Keeping a spare filter on hand means you will never have to delay this important maintenance, ensuring your refrigerator continues to operate at its best.