LT1000P vs LT800P
Both are LG refrigerator cartridges, and they are the pair most often mixed up.
Short answer
Different housings — not interchangeable.
The head collars differ by about 2 mm despite similar body lengths. They are separate cartridges for separate builds.
| Specification | LT1000P | LT800P |
|---|---|---|
| Brand | LG | LG |
| Housing | LG LT1000 vertical twist-lock | LG LT800 twist-lock |
| Rated life | 200 gal · 6 mo | 200 gal · 6 mo |
| Filtration | 0.5 µm nominal | 0.5 µm nominal |
| Certification | NSF/ANSI 42, NSF/ANSI 53, NSF/ANSI 401 | NSF/ANSI 42, NSF/ANSI 53, NSF/ANSI 401 |
| Installation | Twist-in, 90° quarter turn, no tools | Twist-in, quarter turn, no tools |
| Refrigerator models listed | 40 | 0 |
| Also sold as | LT1000PC, LT1000PCS, ADQ74793501, ADQ74793502 | ADQ73613401, ADQ73613402 |
What they share
Both are certified to NSF/ANSI 42 and NSF/ANSI 53 and NSF/ANSI 401. That covers the same basic contaminant set, so filtration performance is not the deciding factor between them.
Where they differ
- Fit. LT1000P does not replace LT700P, LT800P or LT600P. They share the LT name but use different housings. Check the number printed on the cartridge you are removing.
Which one do you need
This is not a choice — it is a lookup. The refrigerator decides. Check the number printed on the cartridge in the housing, or look up your refrigerator model. If both numbers appear on your old cartridge, the housing accepts the newer of the two.