Apr 22 , 2026

LG LT1000P Water Filter: Full Replacement Guide

If you own an LG French-door refrigerator made in the last several years, there is a good chance you are looking at an LT1000P when the filter indicator light comes on. This is the filter LG ships in most of their current mainstream and premium French-door models. It is different from the older LT700P and not cross-compatible.

This guide covers which refrigerators take the LT1000P, how to install it, when to replace, what it filters, and where to buy.

What the LT1000P Is

The LT1000P (full part number LT1000P, sometimes written LT-1000P or LT1000PC depending on packaging) is a cartridge-style water filter for LG and Kenmore French-door refrigerators. It uses activated carbon and a particulate filtration layer to reduce chlorine, lead, mercury, cysts, and a range of other contaminants.

NSF certifications: - NSF/ANSI Standard 42 (aesthetic effects: chlorine taste and odor, particulates) - NSF/ANSI Standard 53 (health effects: lead, cysts, mercury, asbestos) - NSF/ANSI Standard 401 (emerging contaminants: pharmaceuticals, pesticides)

Capacity: 200 gallons or 6 months, whichever comes first Flow rate: approximately 0.5 gallons per minute Filter media: activated carbon block

Which Refrigerators Use the LT1000P

The LT1000P is compatible with a specific range of LG and Kenmore (LG-made) refrigerators. The short answer: most LG French-door refrigerators manufactured from roughly 2017 forward use the LT1000P.

LG models known to use LT1000P (partial list; confirm against your manual): - LFXS26973 series - LFXS28968 series - LFXC22526 series - LFXC24796 series - LMXC23796 series - LRFVS3006 series - LRMDS3006 series - LRMXS2806 series

Kenmore models (many Kenmore Elite refrigerators are LG-built): - 795.74025 series - 795.74033 series - 795.74059 series

If your refrigerator is not on this list but takes a filter that threads in through the top-left corner of the main refrigerator compartment (not a front-grille filter), the LT1000P is likely the right one. The fastest way to confirm is to pull the existing filter and check the printed part number. If it reads LT1000P or ADQ747935, you are in the right place.

What the LT1000P Is NOT Compatible With

The LT1000P does not fit: - LG models using LT700P (older LG French-door, pre-2017) - LG models using LT500P (even older) - Side-by-side LG refrigerators (use LT800P in many cases) - GE, Whirlpool, Samsung, Bosch refrigerators (different filter specs)

Installation: How to Replace the LT1000P

Replacement takes about 90 seconds. The filter housing is typically in the top-left area of the main refrigerator compartment.

  1. Open the refrigerator door. Locate the filter housing at the top-left inside the refrigerator. There is a round cap or cover.
  2. Push the release button or pull the handle to unlock the filter. Some LG models have a small button beside the filter; others have a twist cap.
  3. Rotate the old filter counter-clockwise approximately a quarter turn.
  4. Pull the old filter straight down and out.
  5. Remove the protective caps from the new LT1000P filter.
  6. Push the new filter up into the housing and rotate clockwise approximately a quarter turn until it locks.
  7. Close the filter compartment door or cover.
  8. Reset the filter indicator light if your model has one. Consult your owner's manual for the specific button combination. On many LG models, press and hold the "Filter" or "Reset Filter" button for 3 to 5 seconds.
  9. Dispense and discard approximately 2 gallons of water through the refrigerator dispenser to flush carbon fines from the new filter media. Discard the first batch of ice made after installation.

When to Replace the LT1000P

LG specifies replacement every 6 months or 200 gallons, whichever comes first. Several signals can indicate it is time:

  • The refrigerator's filter indicator light comes on (most LG models track gallons dispensed)
  • Water flow from the dispenser slows noticeably
  • Taste or odor returns to the water
  • Ice cubes develop an off-taste

The filter indicator is usage-based (gallons dispensed), not time-based. If you are a heavy user, the light will come on before 6 months. If you are a light user, 6 months is still the recommended interval because bacterial growth in the media can reduce performance over time.

OEM vs Aftermarket LT1000P Filters

The LT1000P is a popular filter, which means it is one of the most knocked-off filter models on the market. Aftermarket alternatives exist in every price range.

The honest read:

Genuine LG LT1000P. Certified to NSF 42, 53, and 401. Consistent fit and flow rate. Manufacturer warranty on refrigerator water components preserved. Price: approximately $45 to $55.

Certified aftermarket (brands like Waterdrop, ClearChoice, with NSF 42 and 53 certifications). Performance comparable to OEM for the specific contaminants certified. Fit is usually good. Price: approximately $15 to $30.

Generic uncertified aftermarket. Often $10 to $15. Performance claims are unverified. Fit quality varies. Some work fine; others leak or produce inconsistent flow. Typically not worth the $30 savings.

For most buyers, genuine LG LT1000P or a well-known certified aftermarket is the right call. Budget uncertified filters are a gamble.

Where to Buy the LT1000P

Water Filters FAST stocks genuine LG LT1000P filters with same-day shipping on weekday orders placed before 1pm CST. Free shipping on orders over $75, $5 flat-rate on smaller orders, 30-day returns.

For households with an LT1000P-compatible refrigerator, ordering two at a time is efficient. Two filters cover a full year of use, exceed the free-shipping threshold on most days, and save the effort of ordering again in six months.

Frequently Asked Questions

How often do I need to replace the LG LT1000P? Every 6 months or 200 gallons, whichever comes first. LG's specification is based on the NSF certification limits of the filter media.

Will the LT1000P work in my Kenmore refrigerator? If your Kenmore refrigerator is LG-built (many Kenmore Elite models are), yes. Check your owner's manual or the existing filter's printed part number to confirm. If it says LT1000P or ADQ747935, it is the right fit.

Can I use an LT700P in place of an LT1000P? No. The LT700P and LT1000P have different physical form factors and are not interchangeable. Using the wrong filter can cause leaks or fail to seat in the housing.

Does the LT1000P remove fluoride? No. Activated carbon filters like the LT1000P do not significantly reduce fluoride. For fluoride reduction, reverse osmosis systems are the right answer.

Why does my new LT1000P produce black water at first? The black particles are carbon fines from the new filter media. This is normal and expected. Dispense approximately 2 gallons through the refrigerator water dispenser to flush the fines before using the water. Discard the first batch of ice as well.

My refrigerator filter indicator keeps showing red even after I replaced the filter. Most LG refrigerators require a manual reset after filter replacement. Press and hold the "Filter" or "Reset Filter" button for 3 to 5 seconds. If the indicator does not reset, consult your specific model's manual for the exact reset procedure.

Is same-day shipping really same-day? On weekday orders placed before 1pm Central time, yes. Orders get packed and handed to the shipping carrier the same afternoon. From Hot Springs, AR, standard ground shipping reaches most of the continental US in 2 to 3 business days.