Express Water Alkaline RO
Score: 78/100
iSpring RO500AK
Score: 92/100Rankings
The iSpring RO500AK-BN is an NSF 58 certified tankless reverse osmosis system designed for under-sink installation, producing 500 gallons of filtered water per day. It features a three-stage filtration process with alkaline remineralization and a high-efficiency 2:1 pure-to-wastewater ratio to reduce water waste. Recommended for families, offices, and commercial settings due to its fast flow rate and high daily capacity.
The Express Water 10-Stage RO System is a comprehensive under-sink filtration solution with alkaline remineralization and NSF 58 certification. It includes a 4-gallon tank to compensate for its slow flow rate, making it suitable for families. However, it requires adequate cabinet space and sufficient water pressure to operate effectively.
| Attribute | | |
|---|---|---|
10 stagesbest | 3 stages | |
100 gallons per day | 500 gallons per daybest | |
— | 99 percentbest | |
4 gallonsbest | 0 gallons | |
7 count | 1,000 countbest | |
6 monthsbest | — | |
| ↓ lower better | 5 inchesbest | 5.2 inches |
| ↓ lower better | 17 inches | 16.25 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Storage Tank Capacity (gallons) | 4 gallons | 0 gallons |
General(1) | ||
Installation Type | Under Sink | Under-sink |
Maintenance(1) | ||
Filter Lifespan (months) | 6 months | Not specified months |
Design(2) | ||
System Width (inches) | 5 inches | 5.2 inches |
System Height (inches) | 17 inches | 16.25 inches |
Power(1) | ||
Power Requirement | false | true |
Performance(5) | ||
Filtration Stages (stages) | 10 stages | 3 stages |
Daily Production Rate (gallons per day) | 100 gallons per day | 500 gallons per day |
Wastewater Ratio | 2:1 | |
Contaminants Removed (count) | 7 count | 1000 count |
Feed Water Pressure (PSI) | 40-80 PSI | Not specified PSI |
Features(1) | ||
Faucet Type | Chrome | Brushed Nickel |
Products in the top-left offer the best value (high score, low price).
Professional assessment highlights the Express Water system as a certified, comprehensive solution for residential drinking water, emphasizing the NSF 58 certification.
The product is marketed as a practical solution for families and well water users, with the 4-gallon tank specifically noted as addressing the slow flow rate.
Professional sources highlight the iSpring RO500AK-BN's NSF 58 certification as a key differentiator, noting that it covers the entire system's performance rather than just individual components. The system is recommended for families, offices, and commercial settings due to its fast flow rate and high daily capacity.
The available search results do not contain specific user reviews, testimonials, or detailed consumer feedback regarding praise or complaints.
