GE GXWH40L
#8 in CartridgeFull review
A bare bones single filter housing for sediment and chlorine taste at the lowest price. It suits small budgets and light use.
Amazon $69.85$69.85
The GE GXWH40L is the better whole-house water filter overall, rated 2.9 to 2.6. The GE GXWH40L leads on running cost and price. The GE GXWH40L costs $161.14 less ($69.85 vs $230.99).
iSpring WGB21B-PB
#11 in CartridgeFull review
For homes worried about lead pipes or with chloramine treated water. The lead claim is not certified, so test the water if lead is the main concern.
Amazon $230.99$230.99
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 GE GXWH40L for running cost ($0.90 per 1,000 gallons ($26.94 every 30,000 gallons) vs $2.44 per 1,000 gallons ($121.99 every 50,000 gallons)) and price ($69.85 vs $230.99).
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 | GE GXWH40L | iSpring WGB21B-PB |
|---|---|---|
| Overall rating | 2.9/5 | 2.6/5 |
| Running cost 25% | 45 $0.90 per 1,000 gallons ($26.94 every 30,000 gallons) | 8 $2.44 per 1,000 gallons ($121.99 every 50,000 gallons) |
| Certification 25% | 0 no certification in a public listing, no tested to claim | 0 no certification in a public listing, no tested to claim |
| Flow 15% | 50 flow not published (neutral score used) | 100 15 gpm service flow |
| Price 20% | 100 $69.85 | 74 $230.99 |
| Warranty 15% | 0 warranty not published, scored as none | 0 1-year warranty |
Specifications
| GE GXWH40L | iSpring WGB21B-PB | |
|---|---|---|
| Filtration | ||
| Capacity | 30,000 gallons | 50,000 gallons |
| Replacement filters or media | $26.94 | $121.99 |
| Running cost | $0.90 per 1,000 gal | $2.44 per 1,000 gal |
| Stages | 1 | 2 |
| Chloramine | No | Yes |
| PFAS | No | No |
| Build | ||
| Flow | - | 15 gpm |
| Ports | 1 in | 1 in |
| UV stage | No | No |
| Warranty | - | 1 year |