LG ADQ747935, ADQ74793501, MDJ64844601 Replacement Refrigerator Water Filter by Glacier Fresh, 3-Pack

Yes — they are all the same filter under different LG part numbers. ADQ747935 is the original part number, ADQ74793501 is a revised suffix version (functionally identical), and MDJ64844601 is an alternate LG catalog number for the same filter. All three are also sold as the LG LT1000P at retail. The GlacierFresh GF-1000P 3-Pack replaces all of them interchangeably

The ADQ747935 is one of the most widely copied filter part numbers, which is why you'll find 30+ brands selling replacements. The key differentiators to look for are: (1) independent NSF/ANSI certification (not just "tested to" standards), (2) IAPMO or equivalent third-party lab verification, and (3) premium filter media like coconut shell carbon block vs. cheaper granular carbon. The GlacierFresh GF-1000P meets all three — NSF/ANSI and IAPMO certified, with 100% Sri Lanka coconut shell charcoal block construction.

On most LG French door and side-by-side models that use the ADQ747935 / LT1000P filter, the filter is located in the upper left corner inside the refrigerator compartment, behind a small cover. Push the tab to open the cover, then twist the old filter counterclockwise to remove it. Insert the GlacierFresh GF-1000P and twist clockwise until it clicks and locks. The whole process takes under a minute with no tools.

Not necessarily — it's a scheduled reminder, not a real-time contamination sensor. LG programs the indicator to alert you at 200 gallons or 6 months, whichever comes first, as a prompt to replace the filter. The filter may still be functioning, but its carbon capacity is approaching saturation. You should replace it promptly when the indicator appears rather than waiting for taste or odor changes, which are lagging indicators of filter exhaustion.

No — as long as they're stored properly. Unopened filters have a shelf life of 2–3 years when kept in a cool, dry location away from direct sunlight, heat, and strong odors (like cleaning products). Since each filter lasts 6 months, a 3-pack covers 18 months of use — well within the shelf life window. Store the unused filters in their original sealed packaging until needed.

The GF-1000P's coconut shell carbon block is effective at reducing chlorine, sediment, rust, bad taste, odor, and a range of organic compounds. For PFAS (forever chemicals) and microplastics specifically, under-sink reverse osmosis systems provide the most comprehensive removal. Refrigerator inline filters like the ADQ747935 replacement are primarily designed for chlorine, taste, odor, and sediment reduction — they are not certified for PFAS removal. If PFAS is a concern in your area, we recommend pairing your fridge filter with a dedicated under-sink RO system for drinking water.

Cloudy ice or off-tasting ice right after a filter replacement is caused by air and carbon fines in the new filter that haven't been flushed out yet. Run the water dispenser continuously for 2–3 gallons and discard before using the ice maker. Then discard the first 1–2 batches of ice produced after the filter change. After that, your ice should be clear and taste fresh. If cloudiness persists beyond the first few batches, it may be caused by water temperature or mineral content rather than the filter.

Yes. Under the Magnuson-Moss Warranty Act, appliance manufacturers cannot void your warranty simply because you used a compatible third-party replacement part — including water filters. LG would need to prove that the third-party filter specifically caused a malfunction to deny a warranty claim, which is extremely rare with a properly certified replacement filter. The GlacierFresh GF-1000P is precision-engineered to OEM specifications and certified by NSF/ANSI and IAPMO, making it a safe and legally protected choice for warranty-covered refrigerators.