Refrigerators · parts
LG LSFD2591ST refrigerator water filter: LT700P
LG’s manufacturer model source for exact LSFD2591ST lists LT700P as the compact replacement water filter. LG Studio 24.5-cu.-ft. counter-depth three-door French-door refrigerator with Door-in-Door and integrated tall dispenser. The model support page identifies exact SKU LSFD2591ST.ASTCNA0 and links an LT700P compatibility item; this record is limited to that exact SKU. LG rates LT700P for up to six months or 200 gallons and says to use the exact model manual and filter finder when uncertain.
Safety boundary
- Use the exact product code’s owner manual before replacing the filter. LG says the valve, filter location, and removal procedure differ among models; follow the unit manual if its instructions differ.
- Place a towel or cup under the filter to catch drips. Use the specified LT700P alignment and do not force a misaligned cartridge.
- LG’s general filter guide says to flush about 2.5 gallons after replacement and reset the indicator; check the exact manual for the model’s control/reset procedure.
- Check for leaks after installation. Replace at the service interval or sooner if the indicator turns on/flow drops, and do not use the filter as a disinfection treatment.
Compatibility requires a direct model listing, explicit supersession, or equivalent manufacturer evidence.
Models explicitly covered
These model identities have the source evidence listed below. Read the part decision and suffix limits before ordering.
Required identifiers
- Exact refrigerator model from rating plate: LSFD2591ST.
- Full model/SKU on LG support: LSFD2591ST.ASTCNA0.
- Water-filter cartridge marking: LT700P. LG’s LT120F Fresh Air Filter is a separate air/odor filter.
Compatibility rules
- LG’s exact manufacturer specification and support page map LSFD2591ST.ASTCNA0 to LT700P.
- This page applies only to exact SKU LSFD2591ST.ASTCNA0; do not transfer it to another suffix, finish, model revision or nearby LG refrigerator.
- The water cartridge LT700P is not the separate LT120F interior air filter.
Never assume
- LT700P fits every LG refrigerator or any model that shares a broad family name.
- The water cartridge is interchangeable with the interior air/odor filter or another LG water filter series such as LT800P/LT1000P.
- A similar cartridge appearance or package claims establish model-specific fit.
- A contaminant-reduction certification means the filter disinfects water or makes microbiologically unsafe or unknown-quality water safe.
- The generic replacement article’s location, valve or reset details match the exact unit manual.
Exact model-to-cartridge receipt
- Exact model in LG’s manufacturer source: LSFD2591ST.
- Full product SKU: LSFD2591ST.ASTCNA0.
- LG’s exact LSFD2591ST Studio specification lists LT700P as the compact replacement water filter and describes a 24.5-cu.-ft. counter-depth 3-door French-door model with Door-in-Door and an integrated tall dispenser. LG support identifies exact SKU LSFD2591ST.ASTCNA0 and explicitly links to a compatible LT700P water filter.
- Listed water-filter cartridge: LT700P.
Filter identity and limits
LG identifies LT700P as a genuine refrigerator water filter rated for six months or up to 200 gallons. Check the exact code against LG’s model-filter finder if the rating plate differs.
This entry covers the water cartridge only. The interior air/odor filter is separate, and filtration does not disinfect water.
Safe replacement next step
Before ordering, compare the full appliance label and current cartridge marking with the exact model and LT700P above. Use the exact owner manual for valve, location, installation and reset details.
LG’s general guide says to place a towel/cup under the filter, flush approximately 2.5 gallons after installation, and reset the indicator; follow the exact model instructions where different. Check for leaks before normal use.