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 2.0. The GE GXWH40L leads on running cost and price. The GE GXWH40L costs $188.15 less ($69.85 vs $258).
Pentair Pentek FloPlus Protect 20BB
#13 in CartridgeFull review
For a smaller home where PFAS in the water is the main worry. Its low flow rating suits one or two bathrooms.
Amazon $258$258
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 $4.69 per 1,000 gallons ($187.46 every 40,000 gallons)) and price ($69.85 vs $258).
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 | Pentair Pentek FloPlus Protect 20BB |
|---|---|---|
| Overall rating | 2.9/5 | 2.0/5 |
| Running cost 25% | 45 $0.90 per 1,000 gallons ($26.94 every 30,000 gallons) | 0 $4.69 per 1,000 gallons ($187.46 every 40,000 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) | 0 5 gpm service flow |
| Price 20% | 100 $69.85 | 68 $258 |
| Warranty 15% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| GE GXWH40L | Pentair Pentek FloPlus Protect 20BB | |
|---|---|---|
| Filtration | ||
| Capacity | 30,000 gallons | 40,000 gallons |
| Replacement filters or media | $26.94 | $187.46 |
| Running cost | $0.90 per 1,000 gal | $4.69 per 1,000 gal |
| Stages | 1 | 1 |
| Chloramine | No | No |
| PFAS | No | Yes |
| Build | ||
| Flow | - | 5 gpm |
| Ports | 1 in | 1 in |
| UV stage | No | No |