What water filter does a LFX28991ST refrigerator use?
The LFX28991ST uses the LT700P water filter and the LT120F air filter.
Key takeaways
- Water filter part number: LT700P (LG).
- NSF certified to reduce 2,4-D, Asbestos, Atrazine, Benzene, and more.
- Replace on your fridge's filter-change indicator, or every ~6 months as a default.
- A cheaper NSF-certified aftermarket filter can fit the same slot - just confirm its own certification before buying.
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What the LT700P removes
The LT700P is NSF/ANSI certified to reduce the following, grouped by the standard it was tested to:
NSF/ANSI 42 - Taste & odor (aesthetic)
Chlorine, Nominal Particulate, Taste and Odor
NSF/ANSI 53 - Health contaminants
2,4-D, Asbestos, Atrazine, Benzene, Carbofuran, Cyst, Endrin, Lead, Lindane, Mercury, P-Dichlorobenzene
NSF/ANSI 401 - Emerging compounds
Bisphenol A, Estrone, Ibuprofen, Microplastics, Naproxen, Nonylphenol, Phenytoin
Also known as
The LT700P replaces (and is cross-referenced under) these part numbers: 048231783705, 176272, 2790072, 46-9690, 4609690000, 469690, 6523393, 7364289S, 795.7205, 79572032110, 9690, ADQ36006101, ADQ36006101-S, ADQ36006101S, ADQ36006102, ADQ36006102-S, ADQ36006102S, ADQ36006106, ADQ36006114, AGF80300801, AQF-LT700P, AWF1700, BCF70, BRITA-WFBRFLG2, C700P, CLCH106, CW-L3, EBL7700, ECOAQUA-EFF-6032A, EFF-6032A, EP-LT700P, EWRF1014, FF21410, FML-3, FML-3DP, FML3, GS-L3, HDX-FML-3, KENMORE 46-9690, KENMORE 9690, KENMORE CLEAR, KENMORE CLEAR!, KENMORE-46-9690, KENMORE-469690, KENMORECLEAR!, LFX25978ST, LFX25991ST, LFX28978ST, LFX31925, LFX31925ST, LFX31925SW, LFX31945ST, LFX33975ST, LGEADQ36006101, LMX31985ST, LP-1400P, NVW-145, PD00001835, PF01, PG-700P, PH21410, R-9690, RB-L3, RFC1200A, RWF-1052, RWF1052, SGF-LA07, SGFLA07, SW-L3, TIER1-RWF1052, TIER1-RWF1052P, USWF_4052_2_PACK, WD-LT700P, WF700, WFBRFLG2, WFC2401, WLF-01, WSL-3, WSL3.
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Frequently asked
What water filter does a LFX28991ST refrigerator use?
The LFX28991ST uses the LT700P water filter, and the LT120F air filter.
Does the LT700P remove lead?
Yes - the LT700P is NSF/ANSI 53 certified to reduce lead.
Should I buy the OEM filter or an aftermarket one?
The OEM LT700P is the safe, exact-fit choice. A cheaper aftermarket filter can fit the same slot too - just confirm it carries its own independent NSF certification for the contaminants you care about, since a generic aftermarket filter without certification isn't proven to remove anything.
How often should I replace the LT700P?
Most refrigerator filters are replaced every 6 months regardless of the exact model - use your fridge's filter-change indicator as the trigger if it has one.
Where is the water filter on a LFX28991ST?
Location varies by fridge design - commonly inside the fridge compartment (upper right or lower kickplate/grille) or in the water line behind the unit. Check your owner's manual for the exact spot on this model.