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
The iSpring WGB32B-KSNC is the better whole-house water filter overall, rated 2.8 to 2.6. The iSpring WGB32B-KSNC leads on certification. The Express Water Essential Pro WH300SCGS-S wins on price. The Express Water Essential Pro WH300SCGS-S costs $170 less ($469.99 vs $639.99).
Express Water Essential Pro WH300SCGS-S
#10 in CartridgeFull review
A tidy, frame mounted three stage system for city water with some grit. Its certification claim is vague.
Amazon $469.99$469.99
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-KSNC for certification (tested to NSF/ANSI 42, not certified vs no certification in a public listing, no tested to claim).
- Choose the Express Water Essential Pro WH300SCGS-S for price ($469.99 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-KSNC | Express Water Essential Pro WH300SCGS-S |
|---|---|---|
| Overall rating | 2.8/5 | 2.6/5 |
| Running cost 25% | 50 filter cost or capacity not published (neutral score used) | 42 $0.96 per 1,000 gallons ($96.36 every 100,000 gallons) |
| Certification 25% | 30 tested to NSF/ANSI 42, not certified | 0 no certification in a public listing, no tested to claim |
| Flow 15% | 100 15 gpm service flow | 100 15 gpm service flow |
| Price 20% | 13 $639.99 | 32 $469.99 |
| Warranty 15% | 0 1-year warranty | 0 warranty not published, scored as none |
Specifications
| iSpring WGB32B-KSNC | Express Water Essential Pro WH300SCGS-S | |
|---|---|---|
| Filtration | ||
| Capacity | 100,000 gallons | 100,000 gallons |
| Replacement filters or media | - | $96.36 |
| Running cost | - | $0.96 per 1,000 gal |
| Stages | 3 | 3 |
| Tested to (not certified) | NSF/ANSI 42 | - |
| Chloramine | Yes | No |
| PFAS | No | No |
| Build | ||
| Flow | 15 gpm | 15 gpm |
| Ports | 1 in | 1 in |
| UV stage | No | No |
| Warranty | 1 year | - |