Kenmore 420
A certified 40,000 grain demand softener for well or city water, but the price is hard to justify against similar models.
Amazon $822.77$822.77
2.4/5
A space saving one tank softener for a mid size home, but it costs more and is backed for less time than better documented rivals.
- 45,000 grainsCapacity
- NoNSF/ANSI 44
Check price at Amazon$966.40
Price checked November 1, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Single tank design takes less floor space than a separate resin and brine tank pair
- 1 in NPT connections suit most whole house plumbing
- Low salt alarm warns you before the brine runs out
Cons
- Only a 1 year warranty, short for a softener at this price
- iSpring publishes no resin volume, service flow or salt efficiency
- Costs more per grain than most metered softeners of similar size
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 | WCS45KG |
|---|---|
| Capacity | |
| Rated capacity | 45,000 grains |
| Control | |
| App or remote monitoring | No |
| Certification and warranty | |
| NSF/ANSI 44 | No |
| Valve warranty | 1 year |
| Tank warranty | 1 year |
Alternatives in this size
SpringWell SS4
A mid size softener for four to six bathrooms, for buyers who want a long warranty and will pay well above budget brands for it.
SpringWell $1,680$1,680
GE Smart GXSH45W Discontinued
A connected, certified softener for a larger family on city water that wants app alerts, while stock lasts.
Amazon $799$799
Compare
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