Express Water WH300SCKS 3-Stage Heavy Metal Whole House Filter (Sediment, KDF, Carbon) review
Whole-house carbon filter. Plumber recommended if you are not comfortable with this install. Skill and code, not a preference. No third-party certification on record. Claims below are manufacturer-reported.
What it removes
| Contaminant | Evidence | Stated reduction | Scope |
|---|---|---|---|
| Lead | Manufacturer-reported | not stated | |
| Chlorine (residual) | Manufacturer-reported | not stated | |
| Iron | Manufacturer-reported | not stated |
Certified is an NSF, WQA, or IAPMO listing for that claim. Manufacturer-reported reduction for iron. Not NSF-certified for iron.
Chlorine taste at every tap. Does not soften.
Install upstream of a softener; KDF stage is not a hardness treatment.
Stainless steel freestanding frame with pressure gauges and release buttons, 1 in connections, 20 x 4.5 in cartridges. Stage 1 5-micron sediment, stage 2 KDF-85 + catalytic carbon, stage 3 CTO carbon block. Manufacturer: 0.25 gal/sec (15 GPM), up to 100,000 gal or 6-12 months, 40-80 psi. Replacement set FLTWH2045CKS1 $149.99 on Amazon -> annual est. $150 at 12-month changes. Amazon title says NSF certified filters but the manufacturer product page lists no certification and Express Water is not in NSF's database; none recorded. Manufacturer lists lead, chlorine, chloramine, iron, heavy metals without percentages; does not reduce TDS.