Tier1 Essential 64,000 Grain
A cheap large capacity softener for big households on city water, for buyers who want capacity on a budget and accept a short valve warranty.
Amazon $749$749
64,000
2.1/5
A twin tank Fleck system for large households or businesses that cannot tolerate hard water during regeneration, at a steep premium over a single tank.
- 64,000 grainsCapacity
- NoNSF/ANSI 44
Check price at Amazon$1,985
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Soft water around the clock, since one tank regenerates while the other serves the house
- Two large resin tanks suit very hard water or heavy daily use
- Fleck valve is widely serviced
Cons
- Costs more than twice a single tank 64K system
- Needs floor space and drain access for three tanks
- No published flow, efficiency, warranty term or certification
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 | SF91S22P84 |
|---|---|
| Capacity | |
| Rated capacity | 64,000 grains |
| Resin | 2 cu ft |
| Control | |
| Valve | Fleck 9100SXT |
| Regenerates on demand | Yes |
| App or remote monitoring | No |
| Bypass valve included | Yes |
| Resin tank | 12 x 48 in or 12 x 52 in, two tanks |
| Certification and warranty | |
| NSF/ANSI 44 | No |
Alternatives in this size
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
64,00010 gpm
SpringWell SS+
A high flow, high capacity softener for very large homes, for buyers who want direct support and a long warranty more than the lowest price.
SpringWell $2,520$2,520
80,00020 gpm
Compare
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