
Pentair Fleck 5600SXT
Score: 88/100
AFW Filters Fleck 5600SXT
Score: 86/100Rankings

The Pentair 64k Fleck 5600SXT is a robust whole-home water softener designed for larger households with high water consumption. It features a high-capacity resin tank and a reliable digital metered valve that optimizes regeneration based on actual usage. While it requires significant space and a 24V power source, its durability and efficiency make it a top choice for demanding applications.

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.
| Attribute | ![]() | ![]() |
|---|---|---|
64,000 grainsbest | 48,000 grains | |
10 GPM | 12 GPMbest | |
2 gallonsbest | 1.5 gallons | |
6 personsbest | 6 personsbest | |
| ↓ lower better | 48 inchesbest | 62 inches |
| ↓ lower better | 12 inches | 10 inchesbest |
| ↓ lower better | 48 inches | 10 inchesbest |
10 yearsbest | 10 yearsbest |
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| Attribute | ![]() | ![]() |
|---|---|---|
Build & Durability(1) | ||
Tank Material | Fiberglass | Standard |
Power & Compliance(2) | ||
Power Source | 24V Transformer | AC |
Certifications | None Listed | NSF |
Performance & Capacity(4) | ||
Grain Capacity (grains) | 64000 grains | 48000 grains |
Service Flow Rate (GPM) | 10 GPM | 12 GPM |
Resin Volume (gallons) | 2 gallons | 1.5 gallons |
Recommended Household Size (persons) | 6+ persons | 6 persons |
System & Control(4) | ||
Regeneration Control Type | Digital Metered | Meter Demand |
System Type | Whole-Home | Whole-house with Carbon Filter |
Salt Requirement | Standard Salt | 250 lbs |
Display Type | Digital | LCD |
Physical & Installation(5) | ||
Height (inches) | 48 inches | 62 inches |
Width (inches) | 12 inches | 10 inches |
Depth (inches) | 48 inches | 10 inches |
Installation Type | Whole-Home DIY | DIY |
Weight (lbs) | 200 lbs | lbs |

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

Professional assessments highlight the Fleck 5600SXT valve as the most popular water softener control valve on the planet, noting its reliability due to having only one internal moving part in the water stream and its double backwash engineering.
User feedback emphasizes the ease of DIY installation, supported by detailed instructions and video access, as well as the convenience of pre-programming options that simplify setup. Consumers value the reliability and durability of the proven 5600 valve design.




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