The LG air filter ADQ73214404 is the part LG puts inside the refrigerator to help remove odors from the air in the cabinet. LG rates the cartridge for six months. Past that date the smell settles back into the box. LG sells this cartridge as the LT120F, and Water Filters FAST lists it at $3.99.

An LG refrigerator runs two filters. Owners watch the water filter and forget the air filter. The part numbers make that easy. Two LG numbers open with ADQ73, and one of them filters air while the other filters water. ADQ73214404 is the air one.

Written by the Water Filters FAST filter experts. Reviewed by Phil McNamara, owner, Water Filters FAST. Updated August 2026.

What the LG LT120F air filter does inside the refrigerator

LG's model name for this part is the LT120F. LG's part number for it is ADQ73214404. Water Filters FAST sells it under the full title Replacement L G LT120F - Kenmore ADQ73214404 - Sears 9918 - Refrigerator Air Cleaner Filter.

The product page states one job for this cartridge. It helps remove odors from your refrigerator. That is the claim on the listing, and the part does no more than that.

The cartridge measures about 3 1/4 inches square and 1/4 inch thick. It is a thin flat pad that hides behind a twist-off cover on the back wall. Nothing about it looks like a filter until you hold one. An LG water filter is a cylinder that twists into its own housing.

The air filter never touches your water. Your dispenser and your ice maker draw through a separate LG water filter in a separate housing. Replacing one leaves the other untouched.

Where LG puts the air filter inside the fridge

LG mounts the air filter on the rear wall of the fresh food compartment, just above the top shelf. Look for a round cover. The cartridge sits inside that cover. Nothing shows until you twist the cover off, which is why so many owners swear their refrigerator has no air filter at all.

LG's own installation instructions for the LT120F describe the same spot. The cover reads as a plain vent, so most eyes skip right over it.

LG puts the water filter in a different housing altogether. The two parts never share a slot. A water filter change leaves the air filter exactly as it was.

Not every LG refrigerator carries a fresh air filter. Open the fresh food compartment and scan the rear wall above the top shelf. A round twist-off cover means your model takes the LT120F. No cover means your model runs without an air filter. The check takes ten seconds either way.

Read your model number off the sticker inside the fresh food compartment if the answer stays unclear. Call 855-789-FAST and the filter experts will check it against the catalog.

ADQ73214404 decoded: which LG numbers are air and which are water

LG builds most of its refrigerator filter part numbers on an ADQ prefix. The prefix tells you nothing about what the cartridge filters. ADQ73214404 filters air, and ADQ73613401 filters water. Both numbers open with the same five characters.

These four numbers carry most of the confusion:

LG also ships this air filter under ADQ73214408. The Water Filters FAST product description prints ADQ73214404 and 4408 on the same listing.

Read the number printed on the cartridge you pull out. Trust that number over this table.

Kenmore and Sears cross-references for the same part

LG built refrigerators for Kenmore for years. The same air filter therefore carries more than one badge. The Water Filters FAST product title names all of them: Replacement L G LT120F - Kenmore ADQ73214404 - Sears 9918 - Refrigerator Air Cleaner Filter.

Kenmore uses the LG part number without changing a digit. ADQ73214404 on a Kenmore parts list points at the same cartridge LG sells as the LT120F.

Sears catalogs the filter as 9918. A Sears parts diagram that calls out 9918 points at this filter, and the LT120F drops in with no adapter needed.

If you are shopping a Kenmore parts list and you see 9918, you have found the right part. Sears part 9918 and LG part ADQ73214404 buy the same cartridge. Order whichever number your parts list shows.

How often LG says to replace the air filter

LG states the interval plainly. Change the air filter every six months, or change it when the filter indicator light comes on. The Water Filters FAST product page prints the same interval.

An air filter gives you no warning of its own. A spent water filter slows the dispenser and lets the tap taste come back. A spent air pad looks exactly like a new one. The odor creeps back a little at a time, and the filter is the last place anyone looks.

Write the install date on the cover with a marker. Set a phone reminder for six months out as a backup.

Water Filters FAST sells the LT120F as a 1 Pack at $3.99 and a 3 Pack at $10.99. Three cartridges cover eighteen months at LG's stated interval.

How to change the LT120F air filter

The swap needs no tools and no water shut-off. The air filter never touches the water line. Most people finish in under two minutes.

1. Find the round filter cover. It sits on the rear wall of the fresh food compartment, just above the top shelf.
2. Twist the cover to the left. The cover detaches from the refrigerator wall.
3. Take the old filter out of the cover. The cartridge sits inside the cover. Throw the old cartridge away.
4. Put the new LT120F into the cover. Face the side marked Front outward.
5. Twist the cover to the right. That locks it back onto the refrigerator wall.
6. Reset the filter sensor. LG's instructions say to press and hold the Air Filter button on the display panel for three seconds.
7. Write the date on the cover. The next change falls six months out.

LG publishes these steps on its LT120F fresh air filter installation page. Control panels differ across LG models. Check your display for the Air Filter button before you start, and read your owner manual if the panel carries no such button.

Pairing the air filter with the right LG water filter

Both LG filters run on a six month clock. Owners who change only the water filter leave the odor side alone for years at a time.

Water Filters FAST stocks the LG water filters that pair with the LT120F:

Three of those filters carry a second LG number. The LT1000P carries only LT1000P.

Identifying your LG water filter takes the same move as the air filter. Pull the cartridge out of its housing and read the number stamped on the label. An LT800P reads LT800P or ADQ73613401. An LT500P reads LT500P or 5231JA2002A. Order the number you read.

Find all of them in the LG refrigerator water filter collection. The LG LT800P Refrigerator Water Filter ADQ73613401 draws the most confusion with the air filter. ADQ73613401 and ADQ73214404 share their first five characters.

Order both and the two clocks stay in sync. Match the number printed on each cartridge before you buy either one.

Common questions about the LG refrigerator air filter

Is the LG LT120F the same as ADQ73214404?

Yes. LT120F is LG's model name and ADQ73214404 is LG's part number for the same refrigerator air filter. LG also ships this filter under ADQ73214408.

Does the LG air filter clean the water in my dispenser?

No. The LT120F helps remove odors from the air inside the refrigerator. Your dispenser and your ice maker draw through a separate LG water filter such as the LT800P or the LT1000P.

Where is the air filter in an LG refrigerator?

On the rear wall of the fresh food compartment, just above the top shelf. Look for a round cover and twist it to the left. The cartridge sits inside the cover.

How do I reset the LG air filter light?

LG's LT120F instructions say to press and hold the Air Filter button on the display panel for three seconds. Panels differ across LG models. Check your owner manual if your display carries no Air Filter button.

Will the LT120F fit a Kenmore refrigerator?

Yes, on Kenmore models that call for ADQ73214404 or Sears part 9918. The Water Filters FAST listing names both cross-references in its title.

My LG refrigerator still smells after a new air filter. What now?

A fresh LT120F helps remove odors from the air in the cabinet. It cannot reach a spill under a crisper drawer or an open container on a shelf. Clear the source and wipe the shelves down. Then give the new filter a few days.

Order the LT120F air filter with same-day shipping

The Replacement L G LT120F - Kenmore ADQ73214404 - Sears 9918 - Refrigerator Air Cleaner Filter is in stock. A 1 Pack costs $3.99 and a 3 Pack costs $10.99. Weekday orders placed before 1pm CST ship the same day. Shipping is free over $75, and orders under that carry a $5 flat rate. A 30-day return policy and the Water Filters FAST satisfaction guarantee back every order.

Other brands sit in the refrigerator air filter collection. Read your LG model number to the team at 855-789-FAST and they will confirm the match before you buy.