iSpring WGB32B 3-Stage Whole House Filter (Sediment + 2 Carbon Block) 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 |
|---|---|---|---|
| Chlorine (residual) | Manufacturer-reported | 99% | |
| Turbidity | Manufacturer-reported | not stated |
Certified is an NSF, WQA, or IAPMO listing for that claim.
Chlorine taste at every tap. Does not soften.
Install before a softener if both are used; the carbon stages do not reduce hardness.
20 x 4.5 in Big Blue housings, 1 in NPT. Stage 1 5-micron PP sediment, stages 2-3 coconut-shell CTO carbon block. Manufacturer: up to 15 GPM, 100,000 gal or 12 months, up to 99% chlorine. Replacement set F3WGB32B $125.99 (manufacturer) -> annual est. $126. Manufacturer says filters are third-party tested to NSF/ANSI standards but the system is not in NSF's listing database (iSpring certifies via other bodies); no certification recorded. Not an RO system; does not reduce TDS.