Is Sub-Zero PFAS-free?
Across 8 graded products, Sub-Zero averages A (95/100). On disclosure, the brand says nothing publicly about PFAS. 8 of its products grade C or better. Grades are model-based estimates, not lab results.
Worth buying from Sub-Zero C or better, safest first
Sub-Zero
Refrigerator Water Filter 4204490
activated carbon and ion-exchange resin filter media
Lower-concern filter type; carbon and resin are standard, but Sub-Zero makes no PFAS disclosure.
⚠Brand says nothing about PFAS
Sub-Zero
Sub zero 7042803 Ice Maker Water Filter
activated carbon filter media with polypropylene or polyethylene housing
Lower PFAS concern for typical residential ice-maker cartridge; no red flags but brand provides no assurance.
⚠Brand says nothing about PFAS
Sub-Zero
Replacement Filter DEC3650RIDR 4204490
Activated carbon cartridge filter media
Lower PFAS concern for typical carbon filters, but Sub-Zero does not publicly disclose filter composition or PFAS testing.
⚠Brand says nothing about PFAS
Sub-Zero
Swift Green Filters Replacement Water Filter Sgf-zs48
Activated carbon and ion-exchange resin filter media
Lower PFAS concern for a standard carbon-media filter, but manufacturer silence is a transparency gap.
⚠Brand says nothing about PFAS
Sub-Zero
Refrigerator Water Filter Replacement 4204490
Activated carbon, ion-exchange resin cartridge filter
Lower-concern appliance filter; activated carbon & resin are standard materials without inherent PFAS risk, but Sub-Zero offers no public PFAS transparency.
⚠Brand says nothing about PFAS
Sub-Zero
Refrigerator 4204490
Activated carbon/mechanical filtration cartridge (standard RO or carbon media)
Lower-concern choice; standard carbon filters rarely use PFAS, but Sub-Zero doesn't disclose.
⚠Brand says nothing about PFAS
Sub-Zero
Mist Refrigerator Water Filter Replacement Cartridge 4204490
activated carbon and ion-exchange resin (standard water filter media)
Lower-concern choice; standard carbon/resin filter with no public PFAS issues, but Sub-Zero offers no transparency.
⚠Brand says nothing about PFAS
Sub-Zero
Replacement 4204490 Water Filter and 7007067 Air Purification Cartridge Combo Pack, Compatible with Sub-Zero 4204490, 4290510 Water Filter, 7042798/
Activated carbon and mechanical filter media (proprietary composition unspecified)
Skip until Sub-Zero discloses filter composition and PFAS testing, third-party replacements lack material transparency.
⚠Brand says nothing about PFAS
Every grade uses the same public rubric. How grades work →