LG water filter with packaging on a white background

LG Refrigerator LFX25991ST Water Filter

1 Pack
$33.89 USD $49.99 USD
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LG water filter with packaging on a white background
  • LG water filter with packaging on a white background
  • LG LFX25991ST refrigerator with water filter on a light blue background
  • LG water filter cartridge on a white background
  • White water filter cartridge with text on a white background
  • Comparison of an old and new LG refrigerator water filter packaging on a blue and green background.
LG Refrigerator LFX25991ST Water Filter

LG Refrigerator LFX25991ST Water Filter

Your LG 24.6 cu.ft. 3-door French Door Refrigerator Model LFX25991ST 02, 05, 06 uses the LT700P replacement filter.
$49.99 USD $33.89 USD
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Your LG LFX25991ST refrigerator water filter is the LT700P. It keeps your water clearer, your ice cleaner, and the taste… just better. You might not notice it every day, but when it’s off, you really do.

It reduces chlorine taste, sediment, and common contaminants and fits models like LFX25991ST/02, /05, and /06 without any issue. Installation is quick. Just twist, lock, and run water for a few minutes.

NSF 42 and 53 certified. Replace it every 6 months. Simple, but important.
LG LFX25991ST refrigerator with water filter on a light blue background

Key Features

  • Perfect Fit : Built specifically for LFX25991ST 02, LFX25991ST 05, and LFX25991ST 06 refrigerator revisions.
  • OEM Part Reference Included: Uses the known part reference lg cartridge ADQ36006101 for easy matching.
  • Cleaner Taste: Helps reduce chlorine taste and odor for better water and ice.
  • Filters Common Impurities: Designed to trap typical sediment and particles found in household water.
  • Quick Twist-In Install: Water filter for LG LFX25991ST series steps fast and tool-free.
  • Supports Steady Flow: Helps prevent slow dispensing caused by an old, clogged filter.
  • 6-Month Replacement Cycle: Recommended replacement interval is about 6 months (varies by usage and water quality).

Specifications

  • Brand: LG
  • Filter Model: LG LT700P
  • Part No.: ADQ36006101, ADQ36006113, ADQ75795103, or AGF80300702
  • Compatible refrigerator models: LFX25991ST 02, LFX25991ST 05, LFX25991ST 06
  • Filter Type: Refrigerator Water Filter Cartridge
  • Dimensions: 1.9"D x 1.9"W x 7.1"H
  • Material: BPA-free, high-quality filtration media
  • Cartridge Weight: 0.3 Pounds
  • Flow Rate: 0.5 gallons per minute
  • Pressure Range: 20 – 120 psi
  • Temperature Range: 33 – 100°F
  • Filter Life: 6 months or 200 gallons
  • Certifications: NSF 42 and 53

Our Replacement Water Filters Are NSF Certified To Reduce 99% Contaminants

Hg
Chlorine
Cl
Mercury
Pb
Lead
Pesticides
Herbicides
Pharmaceuticals

See which water and air filters are compatible with your refrigerator.

Find Compatible Models

When to Replace Your Water Filter

Person marking calendar in kitchen

Every 6 Months or 200 Gallons

Most refrigerator water filters are designed to last approximately 6 months or filter up to 200 gallons of water — whichever comes first.

Fridge control panel

When Your Fridge Displays a Filter Alert

Modern LG, Samsung, Whirlpool, and Frigidaire refrigerators have built-in filter indicators that notify you when it's time for a replacement.

Person sniffing water with concern

Changes in Taste, Odor, or Flow

A drop in water pressure, an unusual taste, or an off smell from your dispenser are clear signs your filter is overdue for a change.

Compatible Model Numbers

Compatible with LFX25978ST Series

Designed for:

  • LFX25978ST
  • LFX25978SB
  • LFX25978SW
  • 00 & 01 revisions

Frequently Asked Questions

Q: How do I know what filter I need for my LG refrigerator?
Open the filter compartment and look at the label on the cartridge. It will usually say LT1000P / LT700P / LT800P (or another LT code).✅ If it says LT700P, buy LT700P. Same logic for LT800P and LT1000P.

Q: Is ADQ36006101 the same as LT700P?
Yes. LG cartridge ADQ36006101 is commonly used as the part reference for the LT700P filter.

Q: Which filter does LG refrigerator LFX25991ST use?
Models LFX25991ST, LFX25991ST 02, LFX25991ST 05 and LFX25991ST 06 use the LT700P replacement filter.

Q: How to replace LG LFX25991ST water filter

  • Locate the filter compartment inside the refrigerator.
  • Twist the old cartridge counterclockwise and remove it.
  • Insert the new LT700P filter.
  • Twist clockwise until it locks securely.
  • Flush water for several minutes.
  • Reset the filter indicator (varies by model).

Q: Is this the correct lfx25991st 05 water filter?
Yes, it is designed to fit the filter housing used by the LFX25991ST 05 revision.

Q: Will it fit the lfx25991st 06 water filter slot?
Yes, it fits the same style housing used on LFX25991ST 06 units.

Q: I have lfx25991st 02, will this work?
Yes, this is made for the LFX25991ST 02 revision.

Q: How often should I replace the filter?
Replace every 6 months or when water flow decreases.

Q: Does this improve ice quality?
Yes. Regular replacement helps maintain clearer, fresher ice.

Q: How do I confirm my revision number?
Check the model label inside the refrigerator. It will show 02, 05, or 06 at the end.

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