What it does for your water
The Kenmore 420 40,000-Grain Water Softener and Filter System is a softener and filter combo rated at 40,000 grains. Its listing gives a service flow of 7.7 GPM.
Grain ratings are full-salt figures. At an efficient salt setting its rating delivers about 30,000 grains between regenerations, enough for up to 3 people on 15 grains-per-gallon water regenerating weekly, or 2 on 25 grains per gallon. Size it to your own water.
It pairs the softener with a filter stage. Check what the filter stage is rated to reduce on the listing, and that its cartridge or media is easy to replace.
From the listing: mounting Freestanding; sized by the maker for 1–5; power No Power Source Required; capacity stated as 1.11 cu ft; model 420; material Acrylonitrile Butadiene Styrene.
The listing gives dimensions of 20.5 in (L) x 15 in (W) x 48 in (H), a shipping weight of 102 lb and kenmore water softener, bypass valve, installation kit in the box.
Is it the right unit for your house?
Choose it when
- Up to 3 people on 15 gpg water
- Replacing an older softener
Pass on it when
- More than 2 people on 25 gpg water
- Iron above about 5 ppm without an iron filter
Where it wins and where it loses
Wins
- 40,000-grain rating
- 7.7 GPM service flow
Loses
- Valve not named on the listing
- Needs a drain and an outlet nearby
- Adds sodium to softened water (potassium chloride avoids it)
Limits to know about
- Figures are the maker's or seller's own; check fit and capacity against your water test and your equipment's manual.
Maker's figures
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | 420 | Retailer |
|---|---|---|
| Dimensions (seller) | 20.5"L x 15"W x 48"H | Retailer |
| Material | Acrylonitrile Butadiene Styrene | Retailer |
| Mounting / installation | Freestanding | Retailer |
| Method | Ion Exchange | Retailer |
| Service flow (maker) | 7.7 GPM | Retailer |
| Product weight | 102 lb | Retailer |
| Model name | 420 | Retailer |
| Grain capacity (maker) | 40,000 grains | Retailer |
| Household (maker) | 1–5 | Retailer |
Units to weigh against it
Other water softeners in the catalog
- Fleck 5600SXT 48,000-Grain Water Softener and Filter System
- Aquasure AS-PR75HS64D 64,000-Grain Water Softener and Filter System
- Aquasure AS-WHF64D 64,000-Grain Water Softener and Filter System
- AFWFilters Fleck 5600SXT 64,000-Grain Water Softener and Filter System
Every water softeners on one grid · All Kenmore units we cover
Final verdict
A sound softener and filter combo for up to 3 people on 15 gpg water.
Where to buy
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