How to Know If LG LT800P Is the Right Refrigerator Water Filter for Your Model

LG refrigerators are popular for their sleek design, innovative features like InstaView, and reliable water and ice systems. However, choosing the correct replacement water filter can be confusing due to multiple part numbers and model variations. If you have seen LT800P or “LG LT800P” while shopping for a new filter, this comprehensive guide will help you determine whether this is the right filter for your refrigerator.

This informational blog post explains compatibility, features, installation steps, maintenance tips, and common mistakes so you can confidently select the best filter and enjoy fresh, clean water and ice.

Why LG Water Filter Numbers Can Be Confusing

LG uses several water filter series across their refrigerator lineup:

• Older models may use LT700P or other earlier filters.
• Many premium and newer models use the LT800P.
• Some listings show cross-references with Kenmore Elite 9490 / 46-9490.
• LG French Door, Side-by-Side, and InstaView models often have different filter requirements.
• Third-party sellers frequently list multiple compatible numbers, adding to the confusion.

Using the wrong filter can cause leaks, poor water flow, or reduced filtration performance. Identifying your exact model’s filter type is important for best results.

Where to Find Your LG Water Filter Model Number

Follow these simple steps to identify the correct filter:

1. Check the old filter cartridge — Remove the current filter and look for LT800P printed on the label. This is the most accurate method.
2. Inspect the filter housing — The LT800P is typically located at the top right inside the fresh food compartment.
3. Review your refrigerator manual — Search for “water filter” or “LT800P” in the owner’s manual.
4. Locate the model plate — Found inside the refrigerator (usually on the left or right wall). Note your full LG model number.
5. Use LG’s official parts lookup — Visit the LG website and enter your refrigerator model number.

Many LG refrigerators have a water filter indicator light or notification on the display panel that alerts you when replacement is due.

What Is LG LT800P Refrigerator Water Filter?

The LG LT800P is LG’s genuine high-performance refrigerator water filter. It uses advanced activated carbon block technology to effectively reduce contaminants and deliver crisp, great-tasting water and ice.

This push-in style filter is designed for many of LG’s premium French Door and Side-by-Side refrigerators.

Key Features of the LG LT800P Water Filter

• NSF/ANSI 42, 53, and 401 certified for trusted performance.
• Reduces chlorine taste and odor, lead, mercury, cysts (Cryptosporidium and Giardia), turbidity, and select pharmaceuticals.
• High capacity — rated for up to 200 gallons.
• Maintains excellent water flow rate for dispenser and ice maker.
• Tool-free push-in installation for quick replacement.
• Compatible with many LG and select Kenmore Elite models.
• Helps reduce plastic bottle waste by providing fresh filtered water at home.
• Durable construction designed for reliable, leak-free performance.

Compatibility Checklist Before Buying

Use this checklist to confirm the LT800P is the right filter:

• Does your current filter show LT800P?
• Is your refrigerator an LG French Door or Side-by-Side model?
• Does it use a push-in filter located at the top right of the fresh food compartment?
• Does your exact model number appear on LG’s official compatibility list?

If most answers are yes, the LG LT800P is the correct water filter.

Common Mistakes When Buying LG LT800P Filters

• Purchasing based only on the LG brand without verifying the exact part number.
• Confusing LT800P with LT700P or other LG filter models.
• Buying non-certified generic filters that may not fit or perform well.
• Ignoring the push-in design difference from twist-in filters.
• Forgetting to flush the new filter after installation.
• Buying from unreliable sellers without checking NSF certification.

When Should You Replace Your LG LT800P Water Filter?

LG recommends replacing the LT800P every 6 months or after 200 gallons, whichever comes first.

Look for these signs that it is time for a new filter:

• Bad taste or odor in water or ice
• Slower water flow from the dispenser
• Cloudy or off-tasting ice cubes
• Filter replacement indicator light turns on
• More than six months have passed since the last replacement

How to Install the LG LT800P Water Filter (Step-by-Step)

The LT800P is designed for quick and easy replacement:

1. Locate the filter housing at the top right inside the fresh food compartment.
2. Open the filter cover.
3. Press the release button or gently pull down the old filter to remove it.
4. Remove protective caps from the new LT800P filter.
5. Align the new filter and push it firmly upward until it clicks securely.
6. Flush 2–3 gallons of water (about 3–5 minutes) through the dispenser and discard it.
7. Reset the filter status indicator if your model has this feature.

The entire process usually takes less than 5 minutes.

Recommended LG LT800P Replacement

If your LG refrigerator uses the LT800P system, choosing a genuine or high-quality NSF-certified compatible filter ensures the best fit, performance, and peace of mind.

View LG LT800P Water Filter from Refrigerators filters shop.

FAQs

Is LT800P the genuine LG filter?

Yes. LT800P is LG’s official replacement water filter for compatible models.

Does this fit my LG French Door refrigerator?

Yes, it fits most LG French Door and Side-by-Side models that require the LT800P.

Can I use a compatible filter instead of genuine LG LT800P?

Yes, many high-quality NSF-certified compatible filters work well, but always verify exact fit.

How long does the LG LT800P filter last?

Up to 200 gallons or 6 months under normal usage.

Is this filter easy to install?

Yes. It uses a simple push-in design. Most users replace it in under 5 minutes.

Why does the water taste bad right after changing the filter?

This is normal due to initial carbon dust. Flush 2–3 gallons of water to clear it.