Express Water RO5DX
Score: 88/100
Home Master Artesian TMAFC-ERP
Score: 88/100Rankings
The Express Water RO5DX is a compact 5-stage under-sink reverse osmosis system featuring NSF/ANSI 58 certification and alkaline remineralization for improved taste. It offers a 50 GPD production rate and includes a leak detection shutoff for added safety. While it lacks the high capacity of larger systems, its pre-assembled design and remineralization feature make it a strong contender for standard households.
The Home Master TMAFC-ERP Artesian is a 7-stage under-sink reverse osmosis system that removes up to 99% of contaminants while adding calcium and magnesium for improved taste and alkaline pH. It features a patented 2-pass remineralization process and an optional permeate pump that reduces wastewater to a 1:1 ratio. Ideal for households seeking high-purity, remineralized drinking water with minimal maintenance.
| Attribute | | |
|---|---|---|
5 stages | 7 stagesbest | |
50 gallons per daybest | 50 gallons per daybest | |
96 percent | 99 percentbest | |
4 gallonsbest | 2.2 gallons | |
1,000 countbest | 99 count | |
12 monthsbest | 12 monthsbest | |
| ↓ lower better | 5 inchesbest | 16 inches |
| ↓ lower better | 15 inches | 12 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | NSF/ANSI 58 | NSF Certified |
Storage(1) | ||
Storage Tank Capacity (gallons) | 4 gallons | 2.2 gallons |
Design(2) | ||
System Width (inches) | 5.0 inches | 16.0 inches |
System Height (inches) | 15.0 inches | 12.0 inches |
Performance(4) | ||
Filtration Stages (stages) | 5 stages | 7 stages |
TDS Reduction Rate (percent) | 96 percent | 99 percent |
Wastewater Ratio | Standard | 1:1 to 4:1 |
Contaminants Removed (count) | 1000 count | 99 count |
Products in the top-left offer the best value (high score, low price).
Professional reviewers highlight the RO5DX's NSF/ANSI 58 certification as a key strength, validating its TDS reduction capabilities and material safety.
Users generally praise the system for its reliable performance, compact size, and the peace of mind provided by NSF certification.
Professional reviewers and editors praise the TMAFC-ERP for its innovative Full Contact remineralization, which addresses common issues like acidity and tank degradation found in traditional RO systems. Experts highlight the 98% contaminant removal rate, the hygienic modular design, and the extended 2,000-gallon filter life as key advantages over competitors.
Everyday consumers commonly praise the great-tasting alkaline water, the ease of tool-free filter swaps, and the significantly faster flow speed compared to standard systems. Recurring complaints focus on the high wastewater volume when the ERP pump is not used and occasional leaks during the initial setup phase.
