Pureline PL-1100 Water Filter
- Water Filter
- 1
- WQA
- LG LFX25974ST
A direct-fit replacement filter for the LG LFX25974ST refrigerator, built around WQA-certified coconut carbon block filtration media.
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How it ranks among the 76 water filters we track
4.7★ across 295 Amazon ratings, Bayesian-smoothed toward the category average.
295 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 76 water filters we track - how the scorecard works · full water filters data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Pureline PL-1100 is a replacement refrigerator water filter built to fit the LG LFX25974ST, WQA certified and sold as a single cartridge. It uses an advanced active coconut carbon block filtration media.
Coconut-shell carbon block media is a denser format than granular carbon, generally associated with more contact time between water and filter as it passes through. The stated compatibility narrows this to the LG LFX25974ST specifically rather than a universal fit across LG's lineup.
- WQA certified
- Coconut carbon block media
- LG LFX25974ST compatible
- Single-unit pack
Who it's for
Owners of the LG LFX25974ST refrigerator needing a replacement filter cartridge.
Strengths and trade-offs
Drawn from this product's published specifications.
- Confirmed fit for LG LFX25974ST
- Coconut carbon block media
- Single pack only
- Compatibility limited to the one listed LG model
Performance notes
Coconut carbon block filtration compresses the carbon into a solid block rather than loose granules, generally slowing flow slightly in exchange for more thorough contact between water and media.
Specifications
| Brand | Pureline |
|---|---|
| Model | PL-1100 |
| Pack Count | 1 |
| Material | Advanced Active Coconut Carbon Block |
| Certification | WQA |
| Compatible | LG LFX25974ST |
Other Pureline water filters
How it compares
This product against the closest alternatives we track in water filters.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Pureline PL-1100 Water FilterThis product | 4.7 / 5 | 295 | 3.8 / 5 |
| Filterlogic FL-RF46 Water FilterFilterlogic | 4.5 / 5 | 6,368 | 4.4 / 5 |
| Golden Icepure GP-RWF0600A Water FilterGolden Icepure | 4.7 / 5 | 3,800 | 4.4 / 5 |
| Glacier Fresh GF-700P Water FilterGlacier Fresh | 4.7 / 5 | 1,500 | 4.3 / 5 |
| Waterdrop WDS-F27 Water FilterWaterdrop | 4.7 / 5 | 39,300 | 4.1 / 5 |
Similar water filters from other brands
Questions about the Pureline PL-1100
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Which refrigerator does the Pureline PL-1100 fit?
The LG LFX25974ST.
What certification does it carry?
WQA.
What is the filter media made from?
Advanced active coconut carbon block.