iSpring RCC7AK
Score: 88/100
APEC Ultimate RO-90
Score: 85/100Rankings
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 RO-90 Ultimate Series is a WQA-certified, 5-stage under-sink reverse osmosis filtration system designed to produce 90 gallons of ultra-pure water per day. It features a durable metal frame, US-made filters with extended lifespan, and a 4-gallon storage tank to support households of four or more people. It is ideal for daily drinking and cooking in areas with high contaminants like lead, arsenic, or fluoride.
| Attribute | | |
|---|---|---|
6 stagesbest | 5 stages | |
75 gallons per day | 90 gallons per daybest | |
93 percent | 100 percentbest | |
— | 4 gallonsbest | |
1,000 countbest | — | |
— | 12 monthsbest | |
| ↓ lower better | 5.1 inchesbest | 5.25 inches |
| ↓ lower better | 19 inches | 17.5 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | NSF/ANSI 58 | WQA Gold Seal |
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(5) | ||
Filtration Stages (stages) | 6 stages | 5 stages |
Daily Production Rate (gallons per day) | 75 gallons per day | 90 gallons per day |
TDS Reduction Rate (percent) | 93 percent | 100 percent |
Contaminants Removed (count) | 1000 count | null count |
Feed Water Pressure (PSI) | 45 PSI | 50 PSI |
Features(2) | ||
Remineralization | true | false |
Faucet Type | Top-Mounted | Chrome |
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”
Professional reviewers from sources like Lowe's and Home Depot highlight the RO-90's premium quality, WQA certification, and superior contaminant removal capabilities. They praise the durable metal construction, eco-friendly design, and the longevity of US-made filters, positioning the system as virtually maintenance-free with a crisp taste that outperforms bottled water.
Everyday users consistently praise the excellent water quality and taste, noting significant reductions in Total Dissolved Solids (TDS). Common themes include satisfaction with the easy installation process, the long lifespan of the filters, and the overall value for obtaining pure water for growing families.
