Your LG refrigerator works harder than most people realise to keep food fresh and the interior smelling clean. A big part of that is the air filter tucked inside the fresh food compartment. If you are looking at the LT120F and are not completely sure it is the correct replacement for your unit, this guide will walk you through exactly how to check compatibility before buying so you can order with confidence and avoid ending up with the wrong filter.
Why LG Refrigerator Air Filter Part Numbers Can Be Confusing
LG refrigerators use an internal air filter that needs replacing every 6 months, but finding the right replacement code is not always straightforward. Here is why buyers frequently run into confusion:
- Three different part numbers refer to the same filter — LT120F, ADQ73214404, and ADQ73214402 all describe the same physical filter, so buyers searching any one of those codes may land on different listings without realising they are looking at the same product
- ADQ73214402 is an older code that still appears on installed filters in earlier LG models, leading buyers to search for a filter that is no longer listed under that number in current catalogues
- Air filters and water filters both sit inside the refrigerator and are both replaced on a schedule, making it easy to confuse the two when searching for a replacement
- LG uses different air filter formats across its lineup and not all LG refrigerators use the LT120F, so confirming the part number before ordering is essential
- Some product listings group all three codes together making it unclear which is the primary code for a specific refrigerator model
Where to Find Your LG Refrigerator Air Filter Part Number Before Buying
- Check the label on your current filter — the part number is printed directly on it. This is the fastest and most reliable confirmation
- Look inside the filter housing slot — some LG models print the required part number on a label inside the housing slot on the rear wall of the fresh food compartment
- Find the model plate inside the fridge — typically located along the upper door frame or side wall of the fresh food compartment. Use the model number to cross-reference the correct filter code
- Check your user guide — the maintenance section lists the exact replacement filter code for your specific LG refrigerator model
- Search by model number on the retailer page — if the label is worn or unreadable this is the quickest way to confirm the right filter before you buy
What Is the LG LT120F Refrigerator Air Filter?
The LG LT120F is a replacement air filter designed for select LG refrigerator models. It uses activated carbon filtration to continuously reduce food odors and ethylene gas that accelerates produce spoilage inside the refrigerator compartment. The LT120F uses a push-in installation design, requires no tools to replace, and carries a recommended replacement interval of 6 months. It is an air filter only and has no connection to the refrigerator water filter or water supply system. LT120F is the current standard part number and replaces the older ADQ73214404 and ADQ73214402 codes.
What Are ADQ73214404 and ADQ73214402?
ADQ73214404 and ADQ73214402 are earlier part numbers that refer to the same LT120F filter format. They are not separate or different filters. If your existing installed filter shows ADQ73214404 or ADQ73214402 on the label, the LT120F is the correct current replacement to order. There is no need to search specifically for either of those older codes as the LT120F covers both.
Is the LT120F the Same as the LG LT1000P Water Filter?
No. This is a common point of confusion for buyers replacing both filters at the same time. The LT120F is an air filter that reduces odors and ethylene gas inside the refrigerator compartment. The LT1000P is a water filter that reduces contaminants in dispensed water and ice. They serve completely different functions, use different housing designs, and are not interchangeable. Some LG refrigerator models require both and each has its own replacement schedule.
Compatibility Checklist Before You Buy the LG LT120F
- Your current filter label shows LT120F, ADQ73214404, or ADQ73214402 — any of these confirms the LT120F is the correct replacement
- Your refrigerator model is on the LT120F compatibility list — cross-check your model number before ordering
- Your refrigerator is an LG French door, InstaView, or side-by-side model — the LT120F covers select models across these configurations
- The filter housing on your refrigerator is on the rear wall of the fresh food compartment — this is the standard location for LT120F compatible models
- Your current filter does not show a different LG air filter code — if it does confirm the correct replacement for that code before ordering
- It has been 6 months since your last replacement — if yes it is time to order regardless of whether odors are currently noticeable inside the refrigerator
Common Mistakes When Buying the LG LT120F Air Filter
- Searching ADQ73214402 specifically — this older code may return limited or outdated results. The LT120F is the current replacement that covers this code and is easier to find and order
- Confusing the air filter with the water filter — both are replaced on a schedule and both sit inside the refrigerator, but they are completely different products with different part numbers and functions
- Assuming all LG refrigerators use the LT120F — not all LG models include an air filter or use the LT120F format. Always confirm the part number on the existing filter before ordering
- Waiting until odors appear before replacing — activated carbon reaches adsorption capacity based on time and exposure. A filter past its 6 month service life may no longer be reducing ethylene gas effectively even if the refrigerator smells acceptable
- Not noting the installation date — the LT120F does not always trigger an indicator light on every LG model. Writing down the installation date at the time of replacement is the most reliable way to track the 6 month schedule
- Ordering based on appearance — LG air filters from different model generations can look similar. Always confirm by part number not by how the filter looks
When Should You Order a Replacement LG LT120F Air Filter?
- 6 months have passed since the last replacement — this is the primary trigger regardless of other factors
- Persistent food odors are noticeable inside the refrigerator between cleanings and after removing strongly scented food
- Stored produce is spoiling faster than expected — ethylene gas buildup from an exhausted filter accelerates ripening in nearby fruits and vegetables
- A stale or musty smell is present when opening the refrigerator door even after wiping down interior surfaces
- The air filter indicator light has activated on models that include one — order a replacement promptly
Ready to Order the LG LT120F Refrigerator Air Filter?
If your LG refrigerator uses the LT120F air filter you can view the compatible replacement and confirm availability here. Replacing on the 6 month schedule keeps odors under control and ethylene gas levels low so your stored food stays fresher for longer.
Shop LG LT120F Refrigerator Air Filter from purefridgewater.
FAQs
How do I know if my LG refrigerator uses the LT120F or a different air filter?
Check the part number printed on the existing filter currently installed in your refrigerator. If it shows LT120F, ADQ73214404, or ADQ73214402 the LT120F is the confirmed replacement. If it shows a different code confirm the correct replacement for that code before ordering.
Can I keep using my LG refrigerator if the air filter is overdue for replacement?
Yes but the filter will no longer be reducing odors and ethylene gas at full capacity. Produce will spoil faster and food odors will build up inside the compartment more noticeably. Replacing on schedule is the most practical way to maintain consistent freshness.
Does replacing the LT120F require turning off the refrigerator?
No. The air filter replacement does not involve the water supply or any electrical components and can be completed with the refrigerator running normally. Press the release tab, pull out the old filter, and push the new one into place.
Is there a filter indicator light for the LT120F on all LG refrigerators?
Not all LG models include a dedicated air filter indicator light. On models that do not include one, writing down the installation date at the time of replacement and setting a 6 month calendar reminder is the most reliable tracking method.
Where is the LT120F air filter housing located in my LG refrigerator?
On most compatible LG refrigerator models the LT120F housing sits on the rear wall of the fresh food compartment. The exact position varies slightly by model so consulting the user guide for your specific LG refrigerator confirms the precise location if it is not immediately visible.
Where can I find more detail on the LT120F before I buy?
The LG LT120F landing page includes a full compatibility reference table, specifications, and installation steps to help you confirm the correct filter and complete the replacement correctly.