
AFW Filters Iron Pro 2
Score: 85/100
NU Aqua 4 Stage
Score: 65/100Rankings

The AFWFilters Iron Pro 2 is a combination water softener and iron filter designed for whole-house treatment of hard water and ferrous iron. It utilizes fine mesh resin and a Fleck 5600SXT digital metered control valve to remove hardness minerals, iron, and manganese while regenerating on-demand based on actual water usage. It is best suited for homes with 2-5 people dealing with both hard water and ferrous iron 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 | ![]() | ![]() |
|---|---|---|
64,000 grainsbest | — | |
16 GPMbest | 15 GPM | |
2 gallonsbest | — | |
5 personsbest | — | |
| ↓ lower better | 62 inches | 31 inchesbest |
| ↓ lower better | 13 inches | 7 inchesbest |
| ↓ lower better | 14 inchesbest | 31 inches |
10 yearsbest | 1 years |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Build & Durability(2) | ||
Tank Material | Unknown | Steel |
Warranty Length (years) | 10 years | 1 years |
Power & Compliance(1) | ||
Power Source | Electric | None |
Performance & Capacity(5) | ||
Grain Capacity (grains) | 64000 grains | grains |
Service Flow Rate (GPM) | 16 GPM | 15 GPM |
Resin Volume (gallons) | 2 gallons | gallons |
Recommended Household Size (persons) | 5 persons | persons |
Operating Pressure (PSI) | Unknown PSI | 40-80 PSI |
System & Control(4) | ||
Regeneration Control Type | Digital Metered | None |
System Type | Combination Softener/Iron Filter | Salt-Free |
Salt Requirement | Standard Salt | None |
Display Type | Digital | None |
Physical & Installation(5) | ||
Height (inches) | 62 inches | 31 inches |
Width (inches) | 13 inches | 7 inches |
Depth (inches) | 14 inches | 31 inches |
Installation Type | DIY | Whole-Home DIY |
Weight (lbs) | Unknown lbs | 53 lbs |


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

Professional analysis highlights the system's efficiency in combining softening and iron removal with metered regeneration to reduce resource consumption. The fine mesh resin is noted for its durability in iron-rich conditions, though experts caution that it is strictly for ferrous iron and requires separate solutions for ferric iron issues.
Data indicates that users value the all-in-one nature of the system and the convenience of DIY installation. However, there is limited consumer feedback available, making it difficult to assess long-term user satisfaction or recurring maintenance complaints beyond the standard salt refill requirements.

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.
