A premium small softener for buyers who want long warranty cover and lower salt use and will pay well above budget brands for it.
Amazon $1,159
A compact, certified demand softener for one to four people, though the same design costs less under other brands.
- 32,000 grainsCapacity
- 7.2 gpmService flow
- YesNSF/ANSI 44
Price checked November 1, 2026. As an Amazon Associate we earn from qualifying purchases.
- Certified by NSF for capacity and salt efficiency
- Learns household water use and regenerates only when needed
- Compact cabinet fits tight spaces
- Costs more than near-identical Whirlpool and Morton units from the same factory
- Low 7.2 gpm service flow suits a small home only
The Kenmore 350 and 420 family
Every Kenmore 350 and 420 model we rank, smallest first. Ratings compare each against its own size.
| Model | Capacity | Rating | Price |
|---|---|---|---|
| Kenmore 350 (this one) | 32,000 grains | 3.1/5 | $621.29 |
| Kenmore 420 | 40,000 grains | 2.8/5 | $822.77 |
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 | 625.383500 |
|---|---|
| Capacity | |
| Rated capacity | 32,000 grains |
| Service flow | 7.2 gpm |
| Control | |
| Valve | Kenmore demand valve |
| Regenerates on demand | Yes |
| App or remote monitoring | No |
| Certification and warranty | |
| NSF/ANSI 44 | Yes |
| Valve warranty | 3 years |
| Tank warranty | 10 years |
Alternatives in this size
A plain Fleck 5600SXT softener for one to three people on moderately hard water, for buyers who want a valve any local shop can service.
Amazon $785A compact, certified softener for a small home or a well with some iron, where space matters more than capacity.
Amazon $580.18Compare
Compare the Kenmore 350 with any other water softener →
More from Kenmore: every Kenmore product ranked.