For a household that wants to fit a filter and forget it for a decade on chlorinated city water.
Amazon $999
A certified, maintenance light tank for a small or medium home on chlorinated city water.
- $0.67 per 1,000 galRunning cost
- 600,000 gallonsCapacity
- 7 gpmFlow
- NSF/ANSI 42Certified
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
- NSF certified for chlorine taste and odor, rare among tank filters
- Rated for 600,000 gallons, years of use in most homes
- No drain or power needed; it never backwashes
- The lowest priced tank system here
- Rated 7 gpm through 3/4 in ports, tight for a big house
- Needs a separate sediment pre-filter, sold separately
- No price published for the replacement element
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its build. How we rank explains each one.
Specifications
| Model number | AO-WH-FILTER |
|---|---|
| Filtration | |
| Capacity | 600,000 gallons |
| Replacement filters or media | $399 |
| Running cost | $0.67 per 1,000 gal |
| Stages | 1 |
| Certified | NSF/ANSI 42 |
| Chloramine | No |
| PFAS | No |
| Build | |
| Flow | 7 gpm |
| Ports | 0.8 in |
| Backwashing | No |
| UV stage | No |
| Warranty | 6 years |
Alternatives in this build
A backwashing carbon tank for owners who want a long life system with a long warranty and have a drain nearby.
Amazon $1,673.70For a large house that needs high flow and wants UV added. Most city homes can skip the UV and pay less.
Amazon $2,246.99Compare
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