iSpring WGB32B
#7 in CartridgeFull review
For a larger house on city water that wants more carbon than a two stage system. The three filter set costs more to replace.
Amazon $420$420
The iSpring WGB32B and the iSpring WGB32B-KSNC are evenly matched, rated 2.9 and 2.8. The iSpring WGB32B leads on price. The iSpring WGB32B costs $219.99 less ($420 vs $639.99).
iSpring WGB32B-KSNC
#9 in CartridgeFull review
For homes on chloramine treated city water that want cartridges rather than a tank. Check replacement filter prices before buying.
Amazon $639.99$639.99
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the iSpring WGB32B for price ($420 vs $639.99).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every cartridge whole-house water filter; a clear win is highlighted. How we rank explains each one.
| Factor weight | iSpring WGB32B | iSpring WGB32B-KSNC |
|---|---|---|
| Overall rating | 2.9/5 | 2.8/5 |
| Running cost 25% | 35 $1.15 per 1,000 gallons ($114.99 every 100,000 gallons) | 50 filter cost or capacity not published (neutral score used) |
| Certification 25% | 30 tested to NSF/ANSI 42, not certified | 30 tested to NSF/ANSI 42, not certified |
| Flow 15% | 100 15 gpm service flow | 100 15 gpm service flow |
| Price 20% | 38 $420 | 13 $639.99 |
| Warranty 15% | 0 1-year warranty | 0 1-year warranty |
Specifications
| iSpring WGB32B | iSpring WGB32B-KSNC | |
|---|---|---|
| Filtration | ||
| Capacity | 100,000 gallons | 100,000 gallons |
| Replacement filters or media | $114.99 | - |
| Running cost | $1.15 per 1,000 gal | - |
| Stages | 3 | 3 |
| Tested to (not certified) | NSF/ANSI 42 | NSF/ANSI 42 |
| Chloramine | No | Yes |
| PFAS | No | No |
| Build | ||
| Flow | 15 gpm | 15 gpm |
| Ports | 1 in | 1 in |
| UV stage | No | No |
| Warranty | 1 year | 1 year |