APEC RO-90
#3 in With tankFull review
For buyers who want a certified, low-maintenance tank RO system with long-lasting filters.
Amazon $209.99$209.99
3.6/5
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.
- 75 gallons a dayOutput
- $95 a yearFilters
- YesNSF/ANSI 58
Check price at Amazon$199.99
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Adds minerals back, so the water tastes less flat than plain RO
- Independently certified to NSF/ANSI 58
- Standard 10 inch filters keep yearly upkeep under $100
- Needs no outlet under the sink
Cons
- The tank takes up much of the cabinet
- Made well under half its rated output in independent testing without a pump
- Sends about two gallons to drain per gallon made in independent testing
The iSpring RCC7 family
Every iSpring RCC7 model we rank, smallest first. Ratings compare each against its own type.
| Model | Output | Rating | Price |
|---|---|---|---|
| iSpring RCC7 | 75 gallons a day | 3.8/5 | $188.09 |
| iSpring RCC7AK (this one) | 75 gallons a day | 3.6/5 | $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.
Independent measurements
Dissolved solids reduction, output and drain ratio measured by independent testers.
| Tested by | TDS reduction | Output | Pure to drain | Conditions |
|---|---|---|---|---|
| Water Filter Guru | 93 % | 35.3 gpd | 0.5 :1 | RCC7-AK tested without a booster pump on 635 ppm feed water: 44 ppm after 2 minutes of flow (114 ppm on first draw after 10 hours idle). 12 oz filled in 230.18 s; 64 oz of pure water sent 137 oz to drain (1:2.14). Date is the review update date. |
Specifications
| Model number | RCC7AK |
|---|---|
| Filtration | |
| Output | 75 gallons a day |
| Stages | 6 |
| Remineralization | Yes |
| NSF/ANSI 58 | Yes |
| Other certifications | NSF/ANSI 372 |
| Replacement filters | $95 a year |
| Build | |
| Tank | 3.2 gal |
| Booster pump | No |
| Smart faucet | No |
| Warranty | 1 year |
Alternatives in this type
APEC RO-Hi
#4 in With tankFull review
For cooks and families who fill pots and pitchers often and want a faster pour from a certified tank system.
Amazon $299.94$299.94
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
Compare
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