Fleck 56SXT Water Softener 48k
- Color: Blue
- Weight: 150 pounds
- Dimensions: 10 × 10 × 54 inches
- Dimensions: 10 x 10 x 54 in
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A pre-loaded Fleck 5600 SXT softener tank sized for whole-house use, best suited to buyers ready for a full-size system rather than a small filter.
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ASIN: B01LZ8GF3FModel: 56SXTCategory: Water Softeners
Overview
This is a water softener built around Fleck's 5600 SXT control valve, with the title indicating it ships already loaded to a 48,000 grain capacity. The blue mineral tank measures 10 by 10 by 54 inches and weighs about 150 pounds.
The Fleck 5600 SXT is a widely used metered control valve in water treatment, and the 48k figure in the title points to resin loaded for a 48,000 grain softening capacity, though it is not broken out as its own labeled spec. At 150 pounds, this is a full system tank rather than a small cartridge unit, so buyers should plan for standard softener installation space.
- Fleck 5600 SXT valve
- 48k grain capacity per title
- Blue tank finish
- 10 x 10 x 54 in, 150 lb
Who it's for
This suits homeowners setting up or replacing whole-house water softening who want a resin tank that arrives pre-loaded rather than filled separately. It is not a compact under-sink solution, given its 54 inch height and 150 pound weight.
Pros and cons
- Fleck 5600 SXT is an established control valve
- Ships pre-loaded per the title
- Full-size tank for whole-house use
- Grain capacity not a separate labeled spec
- 150 lb weight needs solid floor space
Performance notes
The 5600 SXT valve is a metered head, meaning it regenerates based on actual water use rather than a fixed timer, the standard approach for controlling softener cycles efficiently. At 150 pounds and 54 inches tall, the tank needs a dedicated floor footprint with drain access for regeneration, typical of full-house softener installs.
Specifications
| Brand | Fleck |
|---|---|
| Model | 56SXT |
| Color | Blue |
| Weight | 150 pounds |
| Dimensions | 10 × 10 × 54 inches |
| Dimensions | 10 x 10 x 54 in |
Closest rivals on specs
AFWFilters Fleck 5600 SXT Water Softener 48K Grain- Item Weight 150 vs 130 pounds (+15%)
Aquasure Harmony Series Water Softener 48000 Grain- Item Weight 150 vs 120 pounds (+25%)
Kenmore 350 Whole House Water Softener 32000 Grain- Item Weight 150 vs 80 pounds (+88%)
Frequently asked questions
What control valve does the Fleck 56SXT water softener use?
It uses Fleck's 5600 SXT valve, a metered head common in whole-house softeners.
Does the Fleck 56SXT ship already loaded with resin?
The title indicates it ships loaded to a 48,000 grain capacity.
How much does the Fleck 56SXT water softener weigh?
About 150 pounds, in line with a full-size mineral tank.