iSpring WGB21B 2-stage whole-house vs iSpring WGB21B-PF PFAS whole-house
The iSpring WGB21B 2-stage whole-house and iSpring WGB21B-PF PFAS whole-house are certified for the same contaminants we track. Replacement filters and water for 2 people cost about $116 a year on the iSpring WGB21B 2-stage whole-house and $280 on the iSpring WGB21B-PF PFAS whole-house; they cost $183 and $326 to buy.
| iSpring WGB21B 2-stage whole-house | iSpring WGB21B-PF PFAS whole-house | |
|---|---|---|
| Type | Whole-house | Whole-house |
| Price | $183 | $326 |
| Filters + water a year (2 people) | $116 | $280 |
| Filter cost per gallon (rated life) | 0.1¢ | 0.3¢ |
| Gallons per day | — | — |
| Pure to drain | — | — |
| Installation | plumber | plumber |
| PFAS | — | Brand test only |
| Chlorine | Brand test only | Brand test only |
| VOCs | — | Brand test only |