
PRO+AQUA Elite
Score: 82/100
NU Aqua 4 Stage
Score: 65/100Rankings

The PRO+AQUA Elite 5-Stage Whole House Water Softener and Filter Bundle is a comprehensive, commercial-grade water treatment system designed for households with 3-4 bathrooms, particularly those relying on well water. It integrates a 3-stage filtration system, a well water iron/odor filtration system, and an 80,000-grain salt-based softener to address sediment, heavy metals, iron, sulfur, and hardness minerals simultaneously. Best suited for rural homeowners with private wells experiencing iron, sulfur, or sediment contamination.

The NU Aqua 4-Stage Salt-Free Water Softener is a whole-home water treatment system that conditions water without using salt, electricity, or producing wastewater. It utilizes a four-stage filtration process to remove contaminants while preventing scale buildup. While it offers low maintenance and high flow rates, it lacks independent expert reviews and does not remove hardness ions entirely.
| Attribute | ![]() | ![]() |
|---|---|---|
80,000 grainsbest | — | |
20 GPMbest | 15 GPM | |
5 personsbest | — | |
| ↓ lower better | 62 inches | 31 inchesbest |
| ↓ lower better | 16 inches | 7 inchesbest |
| ↓ lower better | 16 inchesbest | 31 inches |
5 yearsbest | 1 years | |
— | 40 PSIbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Build & Durability(2) | ||
Tank Material | N/A | Steel |
Warranty Length (years) | 5 years | 1 years |
Power & Compliance(2) | ||
Power Source | Electricity | None |
Certifications | N/A | None Listed |
Performance & Capacity(5) | ||
Grain Capacity (grains) | 80000 grains | grains |
Service Flow Rate (GPM) | 20 GPM | 15 GPM |
Resin Volume (gallons) | N/A gallons | gallons |
Recommended Household Size (persons) | 5 persons | persons |
Operating Pressure (PSI) | N/A PSI | 40-80 PSI |
System & Control(4) | ||
Regeneration Control Type | Automatic | None |
System Type | Ion Exchange Bundle | Salt-Free |
Salt Requirement | Salt Required | None |
Display Type | Digital | None |
Physical & Installation(5) | ||
Height (inches) | 62.0 inches | 31 inches |
Width (inches) | 16.0 inches | 7 inches |
Depth (inches) | 16.0 inches | 31 inches |
Installation Type | Whole House | Whole-Home DIY |
Weight (lbs) | 322 lbs | 53 lbs |


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

Professional reviewers position the PRO+AQUA Elite Bundle as an essential, purpose-built solution for well water treatment in medium-sized households. They praise its commercial-grade durability, effective removal of well-specific contaminants like iron and sulfur, and the convenience of its automated digital control valve. However, experts note that its inability to reduce TDS or remove bacteria, along with its high complexity and space requirements, make it a specialized choice rather than a universal solution.
Users generally report high satisfaction with the system's performance on well water, particularly noting the elimination of bad odors and taste caused by iron and sulfur. The automatic regeneration and long filter life are frequently cited as major convenience benefits. Recurring complaints focus on logistical challenges, including the difficulty of DIY installation, the large physical footprint, and the ongoing costs associated with salt replenishment and expensive filter replacements.

The search results do not include professional expert reviews, user feedback, or documented complaints about this system. Available information is limited to product descriptions from the manufacturer and retail listings, which do not provide critical analysis or independent testing data.
The search results do not include professional expert reviews, user feedback, or documented complaints about this system. Available information is limited to product descriptions from the manufacturer and retail listings, which do not provide critical analysis or independent testing data.
