Water Filter for the LG LFX31925SB-01 (LT700P)

LFX31925SB/01 specifics — where the filter actually lives

Where the filter actually lives: upper rear of the fresh-food section in most French-door builds with interior dispensers, the same estate every French-door refrigerator in this family uses. It is a push-twist bay — a push to register, a turn to lock; the sequence is printed on most cartridges for a reason.

Owners of the LFX31925SB/01 report the same friction points: the reset control is the step everyone skips; the light will not acknowledge a new cartridge on its own. Decode the plate and the parts question answers itself: LG built these as French-door machines, and the filter bay inherits the geometry that implies, including where the dispenser feed runs. That trailing 01 is the revision counter: LF chassis revisions share one water path, so the cartridge order never changes with it.

LF vs LS — what the prefix tells you

The LF/LS pair divides this family by layout — Chassis first: French-door (LF) versus side-by-side (LS). The shared cartridge line covers both without adaptation. 31 cu ft of cabinet — the dispenser sees heavy traffic at that size, and heavy traffic ages cartridges faster.

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.

LFX31925SB/01 filter questions