
Frizzlife PX500-A
Score: 85/100
AquaTru Under Sink
Score: 85/100Rankings

The Frizzlife PX500-A is a 7-stage tankless RO system featuring an integrated pump and alkaline remineralization for improved taste and pH balance. It offers a highly efficient 1.5:1 wastewater ratio and 500 GPD capacity, making it a strong performer for family use. It is best suited for households with limited space and those prioritizing water efficiency and mineral restoration.

The AquaTru Under Sink is a high-capacity reverse osmosis system designed for families, featuring a patented 4-stage filtration process that removes 84 contaminants without requiring electricity. It includes a dedicated faucet, a 3-gallon storage tank for on-demand access, and optional alkaline mineral boosting capabilities. However, the high wastewater ratio and requirement for professional installation are notable trade-offs.
| Attribute | ![]() | ![]() |
|---|---|---|
7 stagesbest | 4 stages | |
500 gallons per daybest | 54 gallons per day | |
94.5 percentbest | 87.1 percent | |
0 gallons | 3 gallonsbest | |
1,000 countbest | 84 count | |
6 monthsbest | 6 monthsbest | |
| ↓ lower better | 5 inchesbest | 10.6 inches |
| ↓ lower better | 18 inches | 16.5 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | Not specified | NSF/ANSI 41, 53, 58, 401, P473 |
Storage(1) | ||
Storage Tank Capacity (gallons) | 0 gallons | 3 gallons |
Maintenance(1) | ||
Filter Lifespan (months) | 6 months | 6-24 months |
Design(2) | ||
System Width (inches) | 5.0 inches | 10.6 inches |
System Height (inches) | 18.0 inches | 16.5 inches |
Power(1) | ||
Power Requirement | true | false |
Performance(6) | ||
Filtration Stages (stages) | 7 stages | 4 stages |
Daily Production Rate (gallons per day) | 500 gallons per day | 54 gallons per day |
TDS Reduction Rate (percent) | 94.5 percent | 87.1 percent |
Wastewater Ratio | 1.5:1 | 3:1 |
Contaminants Removed (count) | 1000 count | 84 count |
Feed Water Pressure (PSI) | 20-80 PSI | 40-85 PSI |
Features(1) | ||
Automatic Shutoff | Not specified | true |

Products in the top-left offer the best value (high score, low price).

Professional reviewers rate the Frizzlife PX500-A highly among both tankless and traditional under-sink RO systems. Experts praise its 1.5:1 wastewater ratio as nearly optimal and far superior to market averages. The integrated pump is highlighted for maintaining ideal water pressure, avoiding the drops seen in tank-based systems. Front-accessible filters are commended for making maintenance quick and simple.
Specific consumer reviews or user testimonials are not available in the provided data. However, the product listing indicates multiple users have purchased and registered the device, suggesting market adoption.

“drinking water feel like a luxury”



Professional reviewers highlight the AquaTru Under Sink as a significant upgrade in convenience and hygiene due to its patented TruPure Sanitizer technology, which solves the bacterial growth issues common in traditional under-sink systems.
Users generally express high satisfaction with the improved taste and clarity of the water, appreciating the convenience of the dedicated faucet and the 3-gallon storage capacity.