
AFW Filters Fleck 5600SXT
Score: 86/100
Aquasure Harmony
Score: 85/100Rankings

The AFW Filters Built Fleck 5600SXT is a comprehensive whole-house water softening system that combines 48,000-grain softening capacity with an upflow carbon filter for superior water quality. It features NSF-approved components and a digital metered valve for efficient operation. It is best suited for households seeking both soft water and filtration for chlorine and organic contaminants.

The Aquasure Harmony Series 50,000 Grains is a robust whole-house water softener designed for larger households with 4-6 bathrooms, featuring a high flow rate and integrated pre-filtration. Its main trade-off is high water consumption during regeneration cycles and a reliance on external power. It is best suited for users with well water needing iron reduction and those seeking comprehensive contaminant removal alongside softening.
| Attribute | ![]() | ![]() |
|---|---|---|
48,000 grains | 50,000 grainsbest | |
12 GPM | 15 GPMbest | |
1.5 gallonsbest | — | |
6 personsbest | 6 personsbest | |
| ↓ lower better | 62 inches | 56 inchesbest |
| ↓ lower better | 10 inchesbest | 12 inches |
| ↓ lower better | 10 inchesbest | 12 inches |
10 yearsbest | 5 years |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Build & Durability(2) | ||
Tank Material | Standard | Stainless Steel |
Warranty Length (years) | 10 years | 5 years |
Power & Compliance(2) | ||
Power Source | AC | Corded Electric |
Certifications | NSF | None Listed |
Performance & Capacity(3) | ||
Grain Capacity (grains) | 48000 grains | 50000 grains |
Service Flow Rate (GPM) | 12 GPM | 15 GPM |
Resin Volume (gallons) | 1.5 gallons | Fine Mesh gallons |
System & Control(4) | ||
Regeneration Control Type | Meter Demand | Metered |
System Type | Whole-house with Carbon Filter | Single Tank with Pre-Filter |
Salt Requirement | 250 lbs | Pellet or Granular |
Display Type | LCD | Digital |
Physical & Installation(5) | ||
Height (inches) | 62 inches | 56 inches |
Width (inches) | 10 inches | 12 inches |
Depth (inches) | 10 inches | 12 inches |
Installation Type | DIY | Professional Recommended |
Weight (lbs) | lbs | 117 lbs |

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Users generally praise the system for making laundry and cleaning easier, noting brighter laundry and cleaner dishes, with long-term benefits like smoother skin.