Water Filter for the LG LMXS28626S (LMXS28626S)

LMXS28626S specifics — where the filter actually lives

On the LMXS28626S, the cartridge in the fresh-food compartment — exact spot varies by dispenser layout, so expect to clear one shelf edge before you have working room. It is a twist-lock bay: the ears on the cartridge neck are the guide — line them up, lift into the seat, and quarter-turn home.

Order-day practicalities: the line is still live when you open the bay, so keep a towel in reach, and expect the filter-status light to need a reset before it believes the new cartridge. One prefix, one chassis family: LM is LG’s own coding for 4-door Max machines, and in that format the water path is long enough that a neglected cartridge shows up as flow drop before it shows up as taste. The 6S tail marks finish variants of one chassis; the filter bay is shared across the entire finish range.

LM vs LF — what the prefix tells you

Same parts shelf, two cabinet missions — The 4-door Max/French-door split tracks the LM/LF prefixes — cartridge fit follows the water path, not the label on the door. The two digits after the letters are the cabinet size: this is a 28 cu ft refrigerator, which sets how much dispenser work the cartridge does between changes.

Swap it in 5 minutes

• Twist the old cartridge a quarter turn counterclockwise and pull it straight down — keep a towel in reach for the dribble.
• Fill the new cartridge with cold tap water so the chamber is not fighting an air pocket.
• Offer the new cartridge to the bay, push up, and twist a quarter turn clockwise until the stop catches.
• Run two gallons through the dispenser to flush carbon fines, then hold the filter-reset control until the status light clears.

What this filter takes out of your water

Coverage above lists what the standard addresses, not a performance claim for any specific cartridge — removal claims vary by certificate, so check the NSF listing for the exact part number you are buying.

LMXS28626S filter questions