For a buyer who wants mineralized tankless RO with low running costs and accepts maker test claims instead of NSF 58 certification.
Amazon $399.49
For a buyer who wants a two-filter tankless system with a longer warranty and lower water waste, and can live without NSF 58 certification.
- 600 gallons a dayOutput
- 2.3:1Pure to drain
- NoNSF/ANSI 58
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
- 2-year warranty, longer than most tankless rivals
- Wastes less water than most 2:1 systems
- Self-flushing membrane helps keep output clean
- Not certified to NSF/ANSI 58
- RO membrane replacement price not published
- Needs a power outlet under the sink
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | AUT9360/37 |
|---|---|
| Filtration | |
| Output | 600 gallons a day |
| Pure to drain | 2.3:1 |
| Remineralization | No |
| NSF/ANSI 58 | No |
| Build | |
| Tank | Tankless |
| Booster pump | Yes |
| Warranty | 2 years |
Alternatives in this type
For a household that wants fast mineralized RO water with low filter costs and does not need NSF 58 certification.
Amazon $509.98For big households that want fast tankless RO with low waste and cheap filters. It lacks the third-party certification of pricier rivals.
Amazon $458.99Compare
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