Water Filter for the LG LSXS22423W (LT800P)

LSXS22423W specifics — where the filter actually lives

Finding the bay is the easy part — this chassis puts it low on the fresh-food side or behind the base grille in most side-by-side layouts, a deliberate placement that keeps the swap away from the door seals and drawer rails. Mechanically it is a push-and-twist seat: the short locking turn after the press is what keeps the seal honest between changes.

Field notes: expect the first swap to take longer than the box suggests — aged o-rings grip — so budget ten minutes, not five. LS is not a trim code, it is a chassis statement: it places the machine in LG’s side-by-side family, which pins down the cartridge line, the reset behavior, and the service documentation worth consulting. The 3W tail marks finish variants of one chassis; the filter bay is shared across the entire finish range.

LS vs LF — what the prefix tells you

LS versus LF is the first fork in the parts catalog: split by cabinet mission (side-by-side versus French-door), joined by cartridge line — that is the LS/LF story. the 22 cubic feet in the code is the size class; households that size move enough water that the six-month interval is worth honoring.

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.

LSXS22423W filter questions