Frizzlife PD800-TAM4
#12 in TanklessFull review
For a household that wants fast mineralized RO water with low filter costs and does not need NSF 58 certification.
Amazon $509.98$509.98
3.0/5
For big households that want fast tankless RO with low waste and cheap filters. It lacks the third-party certification of pricier rivals.
- 800 gallons a dayOutput
- 2.5:1Pure to drain
- $85 a yearFilters
- NoNSF/ANSI 58
Check price at Amazon$458.99
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Highest output in iSpring’s under-sink range, enough for large families or a small office
- Only one gallon to drain for every two and a half made
- Just two twist-off filters, at under $90 a year
Cons
- Not certified to NSF/ANSI 58
- Needs an outlet under the sink
- iSpring advises against connecting it to a fridge or ice maker
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 | RO800G |
|---|---|
| Filtration | |
| Output | 800 gallons a day |
| Pure to drain | 2.5:1 |
| Stages | 2 |
| Remineralization | No |
| NSF/ANSI 58 | No |
| Replacement filters | $85 a year |
| Build | |
| Tank | Tankless |
| Booster pump | Yes |
| Smart faucet | No |
| Warranty | 1 year |
Alternatives in this type
Philips AUT9360
#13 in TanklessFull review
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.
Amazon $349.98$349.98
iSpring RO600
#15 in TanklessFull review
For buyers who want fast tankless RO with little wasted water and cheap filters. Pick a certified model if third-party proof of performance matters.
Amazon $429.99$429.99
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