Water Filter for the LG LMXS27626S (LT700P)

LMXS27626S specifics — where the filter actually lives

The LMXS27626S carries its water filter inside the fresh-food cavity, position varying with dispenser spec, the same estate every 4-door Max refrigerator in this family uses. Mechanically it is a push-and-twist seat: seat first, rotate second — reversing the order is the only way to fight this bay, and it will not let you.

Owners of the LMXS27626S report the same friction points: carbon fines in the first pours are normal for a fresh bed, and the filter timer only restarts when you hold the reset. Prefix literacy pays here: 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 ending is a finish code — color and handle options, not mechanical ones. Every finish of this chassis takes the same cartridge.

LM vs LF — what the prefix tells you

LM versus LF is the first fork in the parts catalog: Ordering by prefix works because LM means 4-door Max and LF means French-door in this catalog — and the cartridge pool overlaps both. The digits in the model number read as cabinet capacity (27 cu ft), a decent proxy for how hard the filter works in daily service.

Swap it in 5 minutes

• Press the release (if fitted), twist the old cartridge free, and pull it from the header.
• Wet the new cartridge’s o-ring with cold tap water so it seats without dragging.
• Push the cartridge square onto the header, then give it the locking quarter turn.
• 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.

LMXS27626S filter questions