May 20 , 2026
LG LT1000P Refrigerator Water Filter (ADQ74793501): 2026 Replacement Guide
LG LT1000P Refrigerator Water Filter (ADQ74793501): 2026 Replacement Guide
The LG LT1000P is the standard replacement water filter for most LG French-door refrigerators sold since 2017. If you own an LG fridge with an interior water and ice dispenser, there is a strong chance this is the cartridge you need. The hard part is verifying compatibility, finding an authentic LT1000P at a fair price, and getting it shipped before you run out of filtered water.
This guide covers exactly which LG refrigerators use the LT1000P, the OEM part numbers it ships under, how to install it in under two minutes, when to replace it, and how to spot a counterfeit before you order.
What Is the LG LT1000P?
The LT1000P is LG's standard 6-month, 200-gallon residential refrigerator water filter. It uses a twist-on, twist-off connection inside the fridge interior. No tools required.
The OEM part numbers you may see for the same cartridge:
- LT1000P (LG's primary marketing part number)
- ADQ74793501 (LG's internal manufacturing part number)
- ADQ75795105 (production variant, same cartridge)
- AGF80300704 or AGF80300705 (regional packaging codes)
- LT1000PC (LT1000P with a carbon air filter combo pack)
- LT1000PCS (LT1000P with a carbon air filter and 6-month subscription pack)
All of the above are the same physical cartridge. The variations are packaging configurations and regional distribution codes.
Quick Specs
| Spec | Value |
|---|---|
| OEM part number | LT1000P / ADQ74793501 |
| Capacity | 200 gallons |
| Replacement interval | 6 months or 200 gallons |
| Connection | Twist-on quick-change |
| Certifications | NSF/ANSI 42, 53, and 401 |
| Reduction targets | Lead, chlorine, mercury, cysts, pesticides, pharmaceuticals |
What the LT1000P Filters
The LT1000P is NSF-certified to three different standards covering 22 contaminants. The cartridge reduces:
- Lead (NSF 53)
- Mercury (NSF 53)
- Chlorine taste and odor (NSF 42)
- Cysts including Cryptosporidium and Giardia (NSF 53)
- Asbestos
- Particulates (NSF 42 Class I, the highest particulate class)
- Pharmaceuticals and pesticides (NSF 401: atenolol, ibuprofen, naproxen, estrone, BPA, and others)
- Industrial chemicals
The NSF 401 certification is the differentiator on this cartridge. Most refrigerator water filters cover chlorine and basic particulates. NSF 401 adds the "emerging contaminants" category, which matters more in municipal water supplies with treatment plant outflow from large urban areas.
Compatible LG Refrigerator Models
The LT1000P fits most LG French-door refrigerators manufactured from 2017 forward. The specific models include but are not limited to:
- LFXS28968S, LFXS28968D, LFXS28968W
- LFXS26566S, LFXS26566D
- LFXS26973S, LFXS26973D
- LMXS28626S, LMXS28626D
- LMXC23796S, LMXC23796D
- LMXS30796S, LMXS30796D
- LRMVS3006S
- LMWS27626S
- And approximately 80 additional LG French-door models
If your LG refrigerator was manufactured between 2017 and 2024, the LT1000P is almost certainly the right filter. The most reliable verification is to remove your current filter and read the part number on the label. If it says LT1000P, ADQ74793501, ADQ75795105, or any of the other variants listed above, you have a match.
What the LT1000P Does Not Fit
The LT1000P does not fit older LG refrigerators that use the LT800P (the prior-generation cartridge) or the LT500P (an even older model). LG changed the connection geometry between the LT800P and LT1000P, so they are not interchangeable.
The LT1000P also does not fit Kenmore refrigerators that share LG componentry but use a slightly different cartridge keying.
If you are unsure which filter your refrigerator uses, the most reliable check is the part number printed on the side of your current filter, or the model number on the inside-door sticker of the refrigerator itself.
How to Replace the LT1000P
The LT1000P uses LG's quick-change design. The cartridge sits in either the upper-left corner of the fresh-food compartment or behind the bottom grille, depending on your refrigerator model.
- Locate the filter housing in the upper-left corner of the fresh food section. Some models have the filter behind a small swing-out door. Other models have it in the bottom grille at floor level.
- Turn the old filter counter-clockwise about a quarter turn. You will feel it release.
- Pull the old filter straight out. Expect a small amount of water to drip out as the seal breaks. Have a paper towel ready.
- Remove the new filter from packaging. Pull off the protective cap on the cartridge stem. Do not touch the O-ring with bare hands as oils from your skin can affect the seal.
- Insert the new filter with the stem oriented to match the housing slot. Push it in gently and rotate clockwise a quarter turn until it locks.
- Press and hold the filter reset button on the refrigerator control panel for 3 to 5 seconds. The "Replace Filter" indicator should turn off. On some models the reset is automatic and no button press is needed.
- Flush the new filter. Dispense about 2.5 gallons of water through the dispenser before drinking. This clears any carbon fines from the new cartridge. The first cup or two may come out cloudy. That is normal and clears within a minute.
- Write the install date on the cartridge body with a permanent marker if you want to track the next replacement date manually.
Total time: under two minutes once you have the new cartridge in hand, plus the 2.5-gallon flush.
When to Replace the LT1000P
The replacement interval is 6 months from install or 200 gallons of filtered water, whichever comes first. Most households hit the 6-month mark before the 200-gallon mark.
Your LG refrigerator has a "Replace Filter" indicator on the control panel that turns on after the recommended interval. The indicator is calendar-based, not flow-based, so it triggers at 6 months regardless of actual usage. If your household uses heavy filtered water (large family, frequent ice dispensing), you may need to replace before the indicator triggers.
Signs the LT1000P is past due:
- Replace Filter indicator is on
- Reduced flow from the water dispenser
- Returning chlorine taste in filtered water
- Slower ice production (the ice maker draws through the same filter)
- Cloudy water that does not clear after a minute of dispensing
Counterfeit LT1000P Cartridges: How to Spot Them
The LT1000P is one of the most counterfeited refrigerator cartridges on the market. Counterfeit cartridges look nearly identical to the genuine LG version but use lower-grade carbon and unverified materials. A few ways to verify you have a genuine LT1000P:
- NSF certification mark on the packaging. Genuine LT1000P boxes carry the NSF certification numbers (42, 53, and 401) printed on the packaging.
- LG hologram seal on the side of the box. Counterfeit packaging often skips the hologram or uses a low-resolution copy.
- Part number consistency. The cartridge body, the box, and the packaging insert should all show the same part numbers. Mismatches are a counterfeit signal.
- Buy from authorized retailers. Authorized LG retailers carry traceable inventory direct from LG's distribution network. Marketplace sellers and unfamiliar retailers are where the counterfeit risk concentrates.
A counterfeit LT1000P fits the housing and produces water, but the carbon block is not NSF-tested. You lose the lead, mercury, pharmaceutical, and pesticide reduction certifications that make the LT1000P worth its price.
How the LT1000P Compares to Other LG Cartridges
If you are not sure which LG cartridge your refrigerator uses, this table covers the active LG residential filter lineup:
| Cartridge | Capacity | Fits |
|---|---|---|
| LT1000P (ADQ74793501) | 200 gal | 2017+ LG French-door models |
| LT800P (ADQ73613401) | 200 gal | 2014-2017 LG French-door models |
| LT500P (5231JA2002A) | 200 gal | Older LG side-by-side models |
| LT700P (ADQ36006101) | 200 gal | 2010-2014 LG models |
Verify with your refrigerator model number before ordering. The connection geometry changes between cartridge generations and they are not cross-compatible.
Where to Buy Authentic LT1000P Filters
The genuine LG LT1000P (ADQ74793501) is available at Water Filters FAST with same-day shipping on weekday orders placed before 1pm CST. Orders over $75 ship free. Smaller orders ship for a flat $5.
We carry the LT1000P as a single cartridge, in 2-packs, and in 3-packs for households that want to keep a year's supply on hand. Every cartridge is genuine LG manufacture, NSF-certified to 42, 53, and 401, and backed by our 30-day satisfaction guarantee.
If you are unsure whether the LT1000P is the right cartridge for your LG refrigerator, our support team can verify by model number before you order. Call 855-789-FAST (855-789-3278) or email support@waterfiltersfast.com.
Frequently Asked Questions
How long does an LT1000P last?
Six months or 200 gallons, whichever comes first. Most LG refrigerators trigger the replacement indicator at the 6-month mark on a calendar basis.
Is the LT1000P the same as the ADQ74793501?
Yes. LT1000P is the marketing part number and ADQ74793501 is LG's internal manufacturing part number. Same cartridge.
Will the LT1000P fit my older LG refrigerator?
The LT1000P fits LG French-door refrigerators manufactured from 2017 forward. Older models use the LT800P, LT500P, or LT700P. Check the part number on your current filter to be sure.
Does the LT1000P remove fluoride?
No. The LT1000P removes lead, mercury, chlorine, cysts, pharmaceuticals, and pesticides. Fluoride removal requires a reverse osmosis system.
Why is the LT1000P more expensive than other refrigerator filters?
The NSF 401 certification adds testing for pharmaceuticals and emerging contaminants that most other refrigerator filters do not address. The LT1000P also has a denser carbon block to support the broader reduction profile.
Can I install the LT1000P myself?
Yes. The cartridge is a quick-change design that takes under two minutes. No tools required.
My fridge says "Replace Filter" but my LT1000P is only 3 months old. What is going on?
The Replace Filter indicator is calendar-based on most LG models, not flow-based. If you installed a filter and the indicator was already on, it may not have been reset. Hold the filter reset button for 3 to 5 seconds to reset.
Ready to replace your LG LT1000P? Order the genuine LG LT1000P (ADQ74793501) with same-day shipping on weekday orders before 1pm CST. Free shipping over $75. Questions on compatibility, call 855-789-FAST.
