Aquasana SimplySoft 60K
A certified, salt efficient softener for a large household with very hard water that does not need high flow. Homes with many bathrooms in use at once should look for more flow.
Amazon $1,049$1,049
The Aquasana SimplySoft 60K is the better water softener overall, rated 3.2 to 3.1. The Aquasana SimplySoft 60K leads on certification. The AFWFilters Fleck 5600SXT 64K wins on value. The AFWFilters Fleck 5600SXT 64K costs $154 less ($895 vs $1,049).
AFWFilters Fleck 5600SXT 64K
A low cost large capacity Fleck softener for big households or very hard water, for buyers comfortable with an uncertified, seller-built system.
Amazon $895$895
Prices were last checked November 1, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Aquasana SimplySoft 60K for certification (certified to NSF/ANSI 44 vs not certified to NSF/ANSI 44).
- Choose the AFWFilters Fleck 5600SXT 64K for value ($13.98 per 1,000 grains ($895, 64,000 grains) vs $17.48 per 1,000 grains ($1,049, 60,000 grains)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every over 48,000 grains water softener; a clear win is highlighted. How we rank explains each one.
| Factor weight | Aquasana SimplySoft 60K | AFWFilters Fleck 5600SXT 64K |
|---|---|---|
| Overall rating | 3.2/5 | 3.1/5 |
| Value 30% | 31 $17.48 per 1,000 grains ($1,049, 60,000 grains) | 51 $13.98 per 1,000 grains ($895, 64,000 grains) |
| Salt efficiency 20% | 77 4,543 grains per lb of salt | 50 salt efficiency not published (neutral score used) |
| Flow 15% | 14 11.1 gpm service flow | 50 service flow not published (neutral score used) |
| Warranty 25% | 44 5 years on the valve, 10 years on the tanks | 50 warranty not published (neutral score used) |
| Certification 10% | 100 certified to NSF/ANSI 44 | 0 not certified to NSF/ANSI 44 |
Specifications
| Aquasana SimplySoft 60K | AFWFilters Fleck 5600SXT 64K | |
|---|---|---|
| Capacity | ||
| Rated capacity | 60,000 grains | 64,000 grains |
| Resin | 1.5 cu ft | 2 cu ft |
| Service flow | 11.1 gpm | - |
| Salt efficiency | 4,543 grains per lb | - |
| Highest hardness | 200 gpg | - |
| Highest iron | 1 ppm | - |
| Control | ||
| Valve | - | Fleck 5600SXT |
| Regenerates on demand | Yes | Yes |
| App or remote monitoring | No | No |
| Bypass valve included | Yes | Yes |
| Resin tank | 12 x 35 in | - |
| Certification and warranty | ||
| NSF/ANSI 44 | Yes | No |
| Valve warranty | 5 years | - |
| Tank warranty | 10 years | - |