LG Fridge Water Filter Replacement: LT1000P, LT700P, LT800P and Older Numbers
LG owners looking for a replacement water filter usually arrive with a number half-remembered — LT-something — and a housing they have never opened. This guide sorts it out: LG’s main cartridge families explained, where the housing usually hides, how the replacement generally goes, and how the indicator reset works. And the honesty note belongs right here at the top, because it shapes the advice: Discounted Filter Store now stocks LG filters. What follows is an identification and replacement guide that is also a sales page: our LG range covers the LT1000P, LT800P, LT700P, LT600P and LT500P water filters and the LT120F air filter, each $1 under our sister store, with free US shipping on any order — our range covers other brands, and the closing section explains the one situation (an LG-built Kenmore) where LG owners most often end up reading this site.
LG’s Cartridge Families: The Numbers You Will Meet
LG has standardised its refrigerator filtration around the LT-prefixed cartridge line, with an older generation of ADQ numbers before it. As general guidance — always confirmed against your manual and the label on the cartridge you remove — the families look like this:
| LG filter family | Where you will generally find it | The thing to know |
|---|---|---|
| LT1000P | The current cartridge across many newer LG French door and side-by-side models | The number most current LG owners need; also sold under LG’s Pure N Fresh / water filter line-up for recent models |
| LT800P | An earlier generation in many French door models | Common in mid-generation LG fridges; not the same cartridge as the LT1000P |
| LT700P | Older French door and side-by-side models | The long-serving cartridge of an earlier LG generation |
| ADQ36006101 and similar ADQ numbers | The oldest of these generations | The pre-LT numbering style; manuals for these models usually list the LT successor to order today |
The families are not interchangeable: each fits its own housing generation, and LG has revised the cartridge design as the line-up evolved. That is why the LT number alone, half-remembered, is not enough — the label on the old cartridge or the filter page of your manual gives the exact part, and manuals for older models normally name the current successor number where the original has been superseded.
Identify Yours First: The Label Test
The method that never fails, for LG as for every brand: pull the current cartridge and read it. LG cartridges carry the part number on the label, and that number — LT1000P, LT700P, an ADQ number, or the successor your manual lists — is what you reorder. Our general guide to which water filter you need walks through label-first identification step by step, and it is worth the two minutes before any order anywhere.
If the label is worn, the manual is the backup: LG manuals carry a filter specification naming the exact cartridge for the model.
Where LG Housings Live
LG has been more consistent than most brands about placement. On many French door models, the filter housing is inside the fresh food compartment, toward the top-left, behind a small cover or door that lifts or swings open; the cartridge sits horizontally or at a slight angle depending on the generation. Some side-by-side and earlier models place the housing in an upper corner of the interior or in the grille area instead. As always, that is general guidance: check your manual for your model before you start pulling at covers, because the cover release style varies and the plastic is not forgiving.
How to Replace an LG Filter: The General Pattern
LG replacements are tool-free and quick once the housing is open. The general pattern, with your manual’s version always taking precedence:
- Open the housing cover — on many French door models it lifts up or swings out from the top-left interior.
- Remove the old cartridge. Many LG housings have you swing the cartridge down or out and then twist it to release; a small amount of residual water is normal, so keep a towel handy.
- Read the label on the old cartridge before it goes in the bin — that is your reorder number.
- Fit the new cartridge by reversing the motion: align it as the housing guides show, push or swing it into place and twist until it locks. It should seat firmly with no wobble; a partial seat causes slow flow and drips.
- Flush. Run several minutes of water through the dispenser and discard it, along with the first batch of ice, to clear air and loose carbon.
- Reset the indicator (below) and note the date. LG cartridges are generally on a roughly six-month cycle.
The universal guidance in our general refrigerator water filter replacement walkthrough — seating fully, flushing properly, and reading slow flow as a seating problem first — applies to LG housings exactly as it does to the brands we sell.
Resetting the LG Filter Indicator
The common pattern across many LG models is a press-and-hold of the filter reset control — often the “reset filter” or a combined button on the dispenser panel — for around 3 seconds until the indicator clears. Treat that as the general shape rather than a guarantee: LG’s control layouts differ across generations, some models reset through the display menu, and your manual states the method for yours. Fit the new cartridge before resetting — the light tracks the filter’s life, and resetting without changing the cartridge just hides a finished filter for another six months.
The Kenmore Bridge: When an “LG Problem” Lands on This Site
One group of LG filter owners regularly finds us, and it is worth addressing directly: Kenmore owners whose fridges were built by LG. Kenmore is a badge, not a manufacturer — Kenmore refrigerators were built by several companies, and the LG-built ones take genuine LG cartridges, not the EveryDrop range most Kenmore models use. Our Kenmore refrigerator water filter guide untangles the whole Kenmore map by builder, and it gives LG-built owners the same answer this page does: your cartridge is an LG part, identified by its label, and it should be bought as a genuine LG part. If your Kenmore’s old cartridge carries an LG-style LT or ADQ number, that is the situation you are in.
What We Sell — LG Included, and Why Genuine Matters
Discounted Filter Store’s range now includes genuine LG cartridges — LT1000P (from $38.99), LT800P (from $41.50), LT700P and LT600P (from $41.99), LT500P (from $38.99) and the LT120F air filter ($18.99) — alongside genuine EveryDrop cartridges for Whirlpool-family fridges, Samsung cartridges, and Frigidaire water and air filters. One warning stays exactly as it was: EveryDrop and Samsung cartridges do NOT fit an LG housing — the cartridge families are physically different, and forcing a near-fit risks leaks and unfiltered water bypassing the media. Order the LG cartridge that matches the number on your old filter’s label.
Why say “genuine” about a part we cannot sell you? Because the reasoning is identical on both sides of the counter. A fridge water filter is a certified filtration device, not a shaped sponge: the genuine cartridge is the one whose reductions are tested and certified for that part number, whose seals are moulded for your exact housing, and whose flow rate the fridge was designed around. Copies compete on shape and price, with filtration claims that are typically unverifiable. For the LT or ADQ number on your label, buy the genuine LG cartridge from our LG range.
Frequently Asked Questions
Which LG filter does my fridge take? Most likely one of the LT family — LT1000P on many current models, LT800P or LT700P on earlier generations, or an older ADQ number with an LT successor. The label on the cartridge you remove, backed by your manual, is the only certain answer; the families are not interchangeable.
Where is the water filter in an LG French door fridge? On many models it is inside the fresh food compartment toward the top-left, behind a small cover that lifts or swings open. Some generations use an upper interior corner or grille housing instead — your manual names the spot for your model.
How do I reset the filter light on an LG fridge? The common pattern is to press and hold the filter reset control on the dispenser panel for around 3 seconds, but layouts vary and some models reset through the display menu. Follow your manual’s method, and fit the new cartridge before you reset.
Can I use an EveryDrop or Samsung filter in my LG fridge? No. Each brand’s cartridges are shaped for their own housings, and a forced fit risks leaks and water bypassing the filter media entirely. Order the genuine LG part number shown on your old cartridge’s label — the main LT models are in our LG range, linked in this guide.
My fridge is a Kenmore but the filter looks like an LG. What do I order? Probably an LG-built Kenmore: the filter follows the builder, not the badge. If the label carries an LT or ADQ number, buy the genuine LG cartridge with that number. Our Kenmore guide maps the brand by builder if you want the full picture.
How often should an LG filter be changed? Generally about every six months. Change sooner if the dispenser stream thins, ice shrinks or turns hollow, or taste and odour return — a saturated cartridge keeps passing water long after it has stopped capturing contaminants.