LG LT1000P Refrigerator Water Filter

LG LT1000P Water Filter Replacement

The LG LT1000P refrigerator water filter is the current-generation cartridge for LG French-door and side-by-side refrigerators, and it is the filter to order when the cartridge inside your fridge is stamped LT1000P, LT1000PC or LT1000PCS — or when your manual lists the LG part numbers MDJ64844601 or ADQ74793501. It uses activated carbon filtration to strip out the chlorine taste and odour that municipal treatment leaves behind, and to trap sediment before it can reach your glass, so the water and ice your refrigerator serves taste clean and fresh instead of like the tap. The cartridge is rated for 200 gallons of water, which works out to roughly six months of everyday use for most households. When the filter indicator lights up, or the taste of your water starts drifting back toward the tap, this is the replacement that restores it — a slim twist-in cartridge that swaps by hand in about a minute, with no tools and no plumber. If your old filter has been in place so long that ice has turned cloudy and drinks have picked up a chemical smell, a fresh LT1000P is the simplest fix in the whole kitchen.

Why Choose the LG LT1000P Water Filter

The LT1000P is the filter LG designed for its current refrigerator line, and that exact fit matters more than it might seem. A refrigerator water filter has to seal perfectly against the housing: if the cartridge is even slightly the wrong shape, water can bypass the carbon media entirely and come out effectively unfiltered, while you believe it is being cleaned. Ordering the cartridge by its real part number — MDJ64844601 or ADQ74793501 — removes that guesswork completely. Inside, the activated carbon presents an enormous internal surface area to the water passing through it, and chlorine and the compounds that cause bad taste and odour bond to that surface as the water flows past. The result is water that tastes the way plain water should, coffee and tea that are not fighting a chemical background note, and ice that freezes clear instead of cloudy and does not perfume everything stored near it. Because the LT1000P is a genuine-fit cartridge for the housing it was built for, it also keeps the dispenser flowing at its proper rate for the whole of its rated life — 200 gallons, about six months — instead of clogging early the way a poorly matched cartridge can. One cartridge, fitted correctly, quietly handles every glass, jug and ice tray for half a year.

Compatible Refrigerators

The LT1000P fits LG refrigerators that were built to take the LT1000P cartridge — principally LG’s French-door and side-by-side models from the current generation of the range. It replaces the part numbers LT1000P, LT1000PC and LT1000PCS, and the LG service part numbers MDJ64844601 and ADQ74793501; these are all the same cartridge, simply labelled for different sales channels and model years.

LG French-Door Refrigerators

Most LT1000P refrigerators are French-door models, with the filter housing inside the fresh-food compartment — on most of them behind a small cover at the top-left of the interior. If your French-door LG has a filter indicator on the dispenser panel and a cartridge that twists out of a ceiling housing, the LT1000P family is almost certainly what it takes; the label check below settles it for certain.

LG Side-by-Side Refrigerators

Selected LG side-by-side refrigerators also use the LT1000P cartridge, with the housing in the same general area inside the fresh-food side. The changeover is identical: twist the old cartridge out, twist the new one in, flush, and reset the light.

Check the Cartridge You Already Have

The ten-second, never-wrong compatibility test is the label on the cartridge already in your fridge. Twist it out and read it: if it says LT1000P, LT1000PC, LT1000PCS, MDJ64844601 or ADQ74793501, this is your filter. Your refrigerator’s manual also lists the correct part number in its filter specification. Matching the number matters — the LT1000P looks similar to earlier LG cartridges such as the LT800P and LT700P, but those are different cartridges for different housings, and none of them should be forced into a housing built for another.

How the LT1000P Cleans Your Water

Inside the cartridge, the water passes through activated carbon — carbon that has been treated to be extremely porous, so a small amount of it offers a very large surface for adsorption. As water flows across that surface, chlorine is taken out, and with it the taste and smell most people describe as “like a swimming pool.” The same media traps sediment — the fine rust, sand and scale particles that city and well water both carry — before those particles can cloud your ice or leave grit in a glass. This is why a refrigerator filter makes its biggest, most noticeable difference to taste, odour and clarity, and it is also what the LT1000P is honestly for: it is a taste-and-odour filter for water that is already treated and safe at the tap. It does not soften hard water, it will not remove the minerals that cause kettle scale, and no cartridge of this type sterilises water. What it does — and does well for its full 200-gallon life — is make your refrigerator’s water and ice clean-tasting, fresh-smelling and clear, which is exactly the job most households are asking it to do.

Fresh Water for Everyday Use

A working filter changes more than the occasional glass of water. Most households run the majority of their drinking water through the fridge dispenser: morning glasses, water bottles filled for work and school, the jug on the table at dinner. Coffee and tea made with filtered water taste of coffee and tea rather than of chlorine; cooking water for pasta, rice and soups starts neutral; ice made from filtered water freezes clearer and melts without adding a freezer-and-chlorine note to drinks. Families with children filling bottles all day, and homes that simply prefer their water cold from the door, put a filter through its 200 gallons at a steady pace — which is why the six-month rhythm exists. A fresh LT1000P keeps all of that tasting the way it should, every day, without anyone having to think about it between changes.

Easy to Replace

Changing the LT1000P is a one-minute, tool-free job:

1. Find the filter housing inside the fridge — on most French-door models it is behind a cover at the top-left of the fresh-food compartment. Open the cover.
2. Put a small towel underneath; a little trapped water may drip as the cartridge comes out.
3. Twist the old cartridge anti-clockwise and pull it down and out of the housing.
4. Read the label on the old cartridge before you bin it — that is the number you have just reordered, and it is worth noting for next time.
5. Push the new LT1000P up into the housing and twist it clockwise until it locks firmly in place. A partial seat is the usual cause of slow flow or drips, so make sure it is fully home.
6. Flush the new filter: run 2 to 2.5 gallons of water through the dispenser and discard it. This clears air and loose carbon fines from the new cartridge — the first water may look cloudy or greyish, which is normal and clears as you flush.
7. Discard the first batch of ice as well, for the same reason.
8. Reset the filter indicator: on most LG models, press and hold the Filter (or Reset) button on the dispenser panel for about three seconds until the light goes out. Your manual shows the exact button for your model.

After that, the dispenser should run at full flow and the water should taste clean immediately.

Keeping Your LT1000P on Schedule

The LT1000P is rated for 200 gallons or about six months, whichever arrives first — and the calendar is usually the one that wins. As the carbon loads up with everything it has captured, three signs appear: the dispenser stream slows, ice cubes shrink or turn hollow and cloudy, and the chlorine taste creeps back. The indicator light is deliberately the last warning, not the first. It is also worth knowing that an exhausted cartridge does not stop passing water — it just quietly stops cleaning it — so “the water still comes out” is not evidence the filter is still working. Fit the new cartridge before you reset the light (a reset tells the fridge a fresh filter is in; it does not make an old one fresh), write the change date on your calendar or the cartridge itself, and never wash and reuse an old cartridge: the carbon’s capacity is chemical, not dirt on a surface, and rinsing cannot restore it.

Pack Sizes and Value

Every LT1000P pack is the same genuine-fit cartridge — the pack size simply decides how far ahead you are covered, and every order ships free anywhere in the US, on any amount:

• 1-Pack — $38.99: one cartridge, 200 gallons, about 6 months of cover.
• 2-Pack — $78.99: two cartridges, 400 gallons, about a full year of cover.
• 3-Pack — $118.99: three cartridges, 600 gallons, about 18 months of cover.
• 4-Pack — $158.99: four cartridges, 800 gallons, about two full years of cover.

Most households change this filter twice a year, so the 2-Pack is the natural annual buy: one order, one delivery, and the spare is already in the cupboard when the light comes on — no subscription, no lock-in, and no discovering at the worst moment that the local store is out of stock. Because shipping is free on any amount, there is never a penalty for ordering a single pack either; buy the cover that suits you.

A Reliable Choice for Clean Water

If your LG refrigerator takes the LT1000P, MDJ64844601 or ADQ74793501 cartridge, this is the straightforward, correct replacement: the right shape for the housing, the right carbon for the job, and a full 200 gallons of clean-tasting water and clear ice from a change that takes about a minute. Order the number on your old cartridge’s label and you cannot go wrong.

FAQ’s

Here is the frequently asked questions about this product

What is the LT1000P?

The LT1000P is LG’s current-generation refrigerator water filter cartridge. It is an activated carbon filter rated for 200 gallons — about six months of use — and it reduces chlorine taste and odour and traps sediment in the water your refrigerator dispenses.

Is the LT1000P the same as MDJ64844601?

Yes. MDJ64844601 (and ADQ74793501) are the LG part numbers for the same cartridge that is sold as the LT1000P, LT1000PC or LT1000PCS. If any of those numbers appears on your old cartridge or in your manual, this is the filter you need.

How long does the LT1000P last?

About six months, or 200 gallons of water, whichever comes first. Change it sooner if the flow slows noticeably, ice quality drops, or the chlorine taste returns before the six months are up.

Will the LT1000P fit my LG refrigerator?

It fits LG French-door and side-by-side refrigerators built for the LT1000P cartridge. The reliable check is the label on the cartridge already in your fridge, backed by the filter specification in your manual — do not rely on the fridge’s model name alone, and do not substitute the similar-looking LT800P or LT700P, which belong to different housings.

How do I reset the filter light after changing the LT1000P?

On most LG models, press and hold the Filter or Reset button on the dispenser panel for about three seconds until the indicator goes out. Always fit the new cartridge first, then reset — and check your manual for the exact button on your model.

Why does the water look cloudy right after I fit a new LT1000P?

That is air and fine carbon particles being flushed out of the new cartridge, and it is harmless and temporary. Run 2 to 2.5 gallons through the dispenser and throw away the first batch of ice; the water will run clear and taste clean from then on.

Buy the LG LT1000P from Discounted Filter Store and it ships free anywhere in the US on any order amount — no minimum spend. Orders are processed within 1–2 business days and delivered in 3–5 business days via USPS, and every order is covered by free 30-day returns with a prepaid label, so you can order the cartridge your label calls for with complete confidence.