iSpring RCC7AK
Score: 88/100
APEC Essence ROES-PH75
Score: 82/100Rankings
The iSpring RCC7AK is a 6-stage under-sink reverse osmosis system designed to remove up to 99% of over 1,000 harmful contaminants while restoring beneficial minerals and alkalinity. It features NSF/ANSI 58 certification for the entire system and produces high-quality drinking water with a neutral pH through its dedicated remineralization stage. It is a superior choice for health-conscious consumers prioritizing pH balance and mineral content.
The APEC Water Systems ROES-PH75 Essence Series is a 6-stage under-sink reverse osmosis system rated at 75 gallons per day, designed to produce alkaline mineral-enhanced water by adding high-purity calcium carbonate. It features a solid metal frame for durability, large-capacity block filters for extended life, and an eco-friendly low waste ratio with automatic shut-off. It is ideal for families wanting 99% contaminant removal plus pH boost for taste and health preferences.
| Attribute | | |
|---|---|---|
6 stagesbest | 6 stagesbest | |
75 gallons per daybest | 75 gallons per daybest | |
93 percent | 99 percentbest | |
— | 4 gallonsbest | |
1,000 countbest | — | |
| ↓ lower better | 5.1 inchesbest | 5.25 inches |
| ↓ lower better | 19 inches | 17.5 inchesbest |
45 PSIbest | 40 PSI |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | NSF/ANSI 58 | WQA Certified |
Storage(1) | ||
Storage Tank Capacity (gallons) | null gallons | 4 gallons |
Design(2) | ||
System Width (inches) | 5.10 inches | 5.25 inches |
System Height (inches) | 19.00 inches | 17.5 inches |
Performance(3) | ||
TDS Reduction Rate (percent) | 93 percent | 99 percent |
Contaminants Removed (count) | 1000 count | null count |
Feed Water Pressure (PSI) | 45 PSI | 40 PSI |
Features(1) | ||
Faucet Type | Top-Mounted | Brushed Nickel |
Products in the top-left offer the best value (high score, low price).
Professional reviewers emphasize the iSpring RCC7AK's full-system NSF/ANSI 58 certification as a key market differentiator, noting that many competitors only certify individual components. Experts highlight the alkaline remineralization stage as a critical feature that solves the prevalent issue of standard RO systems producing slightly acidic, flat-tasting water.
Everyday users consistently praise the ease of installation, noting that color-coded tubing and step-by-step instructions make the process manageable for DIY enthusiasts. Users report significantly improved water taste due to the remineralization stage, with some calling it the best RO system available.
“the best RO system out there”
Search results lack in-depth expert reviews from major testing sites like Wirecutter or Consumer Reports. Product pages emphasize manufacturer guarantees of premium components and 2x contaminant removing capacity. A YouTube installer/review video highlights successful installation and TDS reduction testing, positioning the system as worthwhile for clean water.
Limited direct quotes are available, but Home Depot and Lowe's pages note high engagement with 246 questions and answers. Common inferred praise includes effective TDS reduction and easy DIY installation. Recurring complaints are not detailed, though potential issues from similar RO systems include initial setup plumbing challenges.
