
APEC RO-PH90
Score: 88/100
Aquasana SmartFlow RO
Score: 92/100Rankings

The Aquasana SmartFlow® Reverse Osmosis System is a high-efficiency under-sink unit that removes 99.99% of 90 contaminants while restoring beneficial minerals. Its SmartFlow technology addresses common RO drawbacks like water waste and short filter life. It is best for homeowners prioritizing water quality and health who want remineralized, alkaline water.

The APEC RO-PH90 is a 6-stage alkaline reverse osmosis system designed to remove up to 99% of contaminants while remineralizing water to improve taste. It features a pH+ remineralization stage that adds minerals back into the filtered water, addressing the flat taste common in standard RO systems. Best suited for households seeking to eliminate bottled water consumption while improving tap water quality with better-tasting water for beverages.
| Attribute | ![]() | ![]() |
|---|---|---|
0.9 GPMbest | 0.75 GPM | |
12 monthsbest | 12 monthsbest | |
6 stagesbest | 4 stages | |
99 %best | 96.4 % | |
| ↓ lower better | 0 PSIbest | 40 PSI |
| ↓ lower better | 3 ratio | 1.5 ratiobest |
2 yearsbest | 2 yearsbest | |
| ↓ lower better | 18 inches | 12.93 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Health & Safety(1) | ||
Certifications | WQA Certified | NSF/ANSI 42, 53, 58, 401; WQA |
Installation & Compatibility(1) | ||
Operating Pressure (PSI) | 0 PSI | 40 PSI |
Filtration & Performance(4) | ||
Flow Rate (GPM) | 0.9 GPM | 0.75 GPM |
Filtration Stages (stages) | 6 stages | 4 stages |
TDS Reduction (%) | 99 % | 96.4 % |
Pure to Drain Ratio (ratio) | 3 ratio | 1.5 ratio |
Dimensions & Build(2) | ||
Height (inches) | 18.0 inches | 12.93 inches |
Width (inches) | 7.0 inches | 4.5 inches |



Professional reviewers highlight the APEC RO-PH90 as a robust, professional-grade solution for households seeking high-quality water purification. The six-stage system is praised for its ability to remove over 1,000 impurities while the pH+ remineralization stage successfully addresses the common complaint of flat-tasting RO water.
Everyday users generally express high satisfaction with the taste and clarity of the water produced by the APEC system. Common praise includes the improvement in flavor for beverages like coffee and tea, as well as the cost savings from eliminating bottled water purchases.

Professional reviewers highlight the Aquasana SmartFlow® as a top-tier reverse osmosis system due to its exceptional contaminant removal capabilities and patented SmartFlow® technology. Experts emphasize that the system effectively mitigates common RO drawbacks like water waste and short filter life.
Users consistently praise the system for its high contaminant removal effectiveness, specifically noting the reduction of PFAS, lead, and fluoride. The compact design and easy, tool-free maintenance are frequently cited as major advantages for everyday use.
“strips out over 1,000 impurities”

“keeps up with family needs effortlessly”

“installation as straightforward with minimal maintenance”


