APEC Ultimate RO-90
Score: 85/100
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 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 | | |
|---|---|---|
5 stagesbest | 3 stages | |
90 gallons per day | 500 gallons per daybest | |
100 percentbest | 99 percent | |
4 gallonsbest | 0 gallons | |
— | 1,000 countbest | |
12 monthsbest | — | |
| ↓ lower better | 5.25 inches | 5.2 inchesbest |
| ↓ lower better | 17.5 inches | 16.25 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | WQA Gold Seal | NSF 58 |
Storage(1) | ||
Storage Tank Capacity (gallons) | 4 gallons | 0 gallons |
General(1) | ||
Installation Type | Under Sink | Under-sink |
Maintenance(1) | ||
Filter Lifespan (months) | 12 months | Not specified months |
Design(2) | ||
System Width (inches) | 5.25 inches | 5.2 inches |
System Height (inches) | 17.5 inches | 16.25 inches |
Power(1) | ||
Power Requirement | false | true |
Performance(5) | ||
Filtration Stages (stages) | 5 stages | 3 stages |
Daily Production Rate (gallons per day) | 90 gallons per day | 500 gallons per day |
TDS Reduction Rate (percent) | 100 percent | 99 percent |
Contaminants Removed (count) | null count | 1000 count |
Feed Water Pressure (PSI) | 50 PSI | Not specified PSI |
Features(2) | ||
Remineralization | false | true |
Faucet Type | Chrome | Brushed Nickel |
Products in the top-left offer the best value (high score, low price).
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.
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.
