iSpring RCC7AK
#5 in With tankFull review
For buyers who want certified RO water with minerals added back for taste, at a low price. Choose a tankless system instead if cabinet space or wasted water matters more.
Amazon $199.99$199.99
3.6/5
For a small household that wants a certified tank RO system at a low price. Larger families should look at the ROES-100.
- 50 gallons a dayOutput
- $85 a yearFilters
- YesNSF/ANSI 58
Check price at Amazon$179.99
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Certified to NSF/ANSI 58 by WQA
- Filters cost under $90 a year
- Needs no outlet under the sink
Cons
- Lowest rated output here at 50 gallons a day, so the tank refills slowly
- APEC does not publish a drain ratio; its own NSF test data shows about three gallons to drain per gallon made
- The tank takes up much of the cabinet
The APEC ROES family
Every APEC ROES model we rank, smallest first. Ratings compare each against its own type.
| Model | Output | Rating | Price |
|---|---|---|---|
| APEC ROES-50 (this one) | 50 gallons a day | 3.6/5 | $179.99 |
| APEC ROES-PH75 | 75 gallons a day | 3.5/5 | $189.99 |
| APEC ROES-100 | 100 gallons a day | 4.0/5 | $199.99 |
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 | ROES-50 |
|---|---|
| Filtration | |
| Output | 50 gallons a day |
| Stages | 5 |
| Remineralization | No |
| NSF/ANSI 58 | Yes |
| Other certifications | NSF/ANSI 372 |
| Replacement filters | $85 a year |
| Build | |
| Tank | 4 gal |
| Booster pump | No |
| Smart faucet | No |
| Warranty | 1 year |
Alternatives in this type
Express Water RO5DX
#6 in With tankFull review
For a budget buyer who wants a certified system with cheap filters. Anyone paying for water or on a septic system should pick a lower waste design.
Amazon $179.99$179.99
APEC ROES-PH75
#8 in With tankFull review
For buyers who want a certified tank RO system with remineralization at a low price and can accept high water waste.
Amazon $189.99$189.99
Compare
Compare the APEC ROES-50 with any other under-sink reverse osmosis system →
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