iSpring WGB21B
Score: 72/100
iSpring RCC7AK Black
Score: 88/100Rankings
The iSpring RCC7AK-BLK is a 6-stage under-sink reverse osmosis system certified by NSF/ANSI 58 to remove up to 99% of over 1,000 contaminants. It features an alkaline remineralization stage that restores minerals and pH balance, producing bottled-water quality taste without requiring electricity. It is best suited for homeowners seeking superior drinking water quality with bottled-water taste.
The iSpring WGB21B is a compact 2-stage whole house water filtration system designed to remove sediment, chlorine, and other contaminants from the entire home's water supply. It combines a 5-micron polypropylene sediment pre-filter with a coconut shell carbon block filter to deliver clean water at a high flow rate of up to 15 GPM. It is best suited for apartment dwellers and renters in smaller living spaces needing effective whole-house filtration.
| Attribute | | |
|---|---|---|
15 GPMbest | 0.052 GPM | |
12 monthsbest | 12 monthsbest | |
2 stages | 6 stagesbest | |
— | 97.9 %best | |
| ↓ lower better | 5 microns | 0 micronsbest |
1 yearsbest | 1 yearsbest | |
| ↓ lower better | 11 inchesbest | 19 inches |
| ↓ lower better | 19 inches | 16 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Health & Safety(3) | ||
Certifications | null | NSF/ANSI 58 |
Lead Reduction | false | true |
Remineralization | false | true |
Installation & Compatibility(1) | ||
Installation Type | Whole House | Under-Sink |
Filtration & Performance(5) | ||
Filtration Technology | 2-Stage | Reverse Osmosis |
Flow Rate (GPM) | 15 GPM | 0.052 GPM |
Filtration Stages (stages) | 2 stages | 6 stages |
TDS Reduction (%) | false % | 97.9 % |
Micron Rating (microns) | 5 microns | 0.0001 microns |
Dimensions & Build(3) | ||
Height (inches) | 11.0 inches | 19.00 inches |
Width (inches) | 19.0 inches | 16.0 inches |
Depth (inches) | 26.0 inches | 15.5 inches |
Products in the top-left offer the best value (high score, low price).
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