Aquasure Harmony 48K
A budget metered softener sized for a typical family with hard water. It costs little per grain, but its capacity and salt use are not independently verified.
Amazon $629.99$629.99
3.1/5
A straightforward Fleck 5600SXT softener for a family of three to five, for buyers who value a widely serviced valve over certification.
- 48,000 grainsCapacity
- NoNSF/ANSI 44
Check price at Amazon$804.99
Price checked November 1, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Metered regeneration uses salt only after the resin has done its work
- 250 lb brine tank means fewer trips with salt bags
- Chlorine resistant 10% crosslink resin lasts longer on city water
Cons
- No published salt efficiency, service flow or NSF/ANSI 44 certification
- Listing does not spell out the warranty term
The AFWFilters Fleck 5600SXT family
Every AFWFilters Fleck 5600SXT model we rank, smallest first. Ratings compare each against its own size.
| Model | Capacity | Rating | Price |
|---|---|---|---|
| AFWFilters Fleck 5600SXT 32K | 32,000 grains | 3.1/5 | $785 |
| AFWFilters Fleck 5600SXT 48K (this one) | 48,000 grains | 3.1/5 | $804.99 |
| AFWFilters Fleck 5600SXT 64K | 64,000 grains | 3.1/5 | $895 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | WS48-56SXT-10 |
|---|---|
| Capacity | |
| Rated capacity | 48,000 grains |
| Resin | 1.5 cu ft |
| Control | |
| Valve | Fleck 5600SXT |
| Regenerates on demand | Yes |
| App or remote monitoring | No |
| Bypass valve included | Yes |
| Resin tank | 10 x 54 in |
| Certification and warranty | |
| NSF/ANSI 44 | No |
Alternatives in this size
SoftPro Elite 48,000 Grain
A premium family size softener for buyers who want long warranty cover and lower salt use and will pay for it.
Amazon $1,289$1,289
DuraWater Fleck 5600SXT 48K
A standard Fleck 5600SXT softener for a typical family, best for buyers who already trust the Fleck valve and the seller.
Amazon $825$825
Compare
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