Liebherr · Refrigerator Filters
Liebherr Water Filter for refrigerator 7440002
Lower concern. Carbon filters rarely contain PFAS by design.
Liebherr 7440002 is an activated carbon replacement filter with no known PFAS content or brand claims either way. Carbon filtration media is inherently PFAS-free, though cartridge housing materials are undisclosed.
Shop Liebherr on Amazon →Material
activated carbon filter cartridge
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
The Liebherr 7440002 is an activated carbon cartridge filter designed for chlorine, taste, and odor reduction in refrigerator water dispensers. Activated carbon itself is inert and food-contact safe when sourced responsibly; it works by adsorption rather than chemical reaction, so leaching risk is minimal compared to ion-exchange resins. The filter housing material and any post-carbon stages (if present) determine secondary leaching potential, which Liebherr does not publicly detail for this model.
The brand's record and disclosure
Liebherr is a reputable German appliance manufacturer with no documented recalls or safety controversies tied to water filters. However, the company provides minimal public disclosure of filter material sourcing, certifications, or third-party testing for this specific cartridge. NSF or WQA certification status for the 7440002 is not clearly stated in available sources, limiting independent verification of contaminant removal claims.
How it compares in its category
Refrigerator water filters are generally low-risk compared to pitcher filters or under-sink systems because flow rates are lower and contact time is brief. The 7440002 is proprietary to Liebherr machines, so direct comparison is difficult; third-party equivalents exist but may vary in carbon quality and housing materials. Activated carbon filters in this class typically perform well for chlorine removal but have limited effectiveness on minerals, nitrates, or bacteria without additional stages.
If you buy it
Replace the filter every 6 months or per manufacturer guidance; stagnant water in unused dispensers can promote bacterial biofilm growth even with a fresh filter. Do not attempt to extend cartridge life beyond recommended intervals. Store unopened filters in cool, dry conditions away from strong odors (carbon is absorbent). Flush the dispenser line for 2 to 3 minutes after installing a new filter to remove any loose particles or carbon dust.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Bacterial growth and biofilm formation
If filter is not replaced on schedule or dispenser sits unused, stagnant water can harbor bacteria and mold behind the filter housing. Liebherr does not publish antimicrobial additives in this cartridge, so maintenance discipline is the primary control.
Filter housing material leachables
Liebherr has not disclosed the polymer or composite material used for the cartridge casing. No leaching incidents are on record, but housing chemistry is not independently verified.
Activated carbon dust and loose particles
New cartridges can shed fine carbon particles into water if not flushed before use. This is cosmetic rather than toxic but can affect taste and clarity initially.
Improper installation leading to bypass
Incorrect seating of the cartridge can allow unfiltered water to pass around the media. This is a user-error hazard rather than product defect, but affects filter safety function.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Refrigerator Filters
Kenmore
9690 Refrigerator Water Filter 1-Pack, Nsf/wqa/iapmo Certified, Reduces 99% Chlorine & Odor, BPA-Free, Replacement for 46-9690 469690 Lt700p
activated carbon filter cartridge
Lower-concern water filter; carbon-based design unlikely to contain PFAS, but Kenmore makes no explicit PFAS disclosure.
✓Verified PFAS-free by a third party
Kenmore
Pureline Filter Compatible with Whirlpool Everydrop Filter 1
Activated carbon and fiberglass filter media
Lower concern for PFAS; standard cartridge filter with no known PFAS-bearing materials, but brand offers no transparency.
✓Bare metal or glass, no coating at all
Clearly Filtered
Water Pitcher Replacement Filter 3-Pack
Activated carbon and ion-exchange resin filter media
Lower-concern option; activated carbon filters are standard PFAS-reduction media, but verify pitcher durability and actual tested removal rates independently.
✓Brand claims PFAS-free (unverified)
More refrigerator filters grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.