Whirlpool Water Softener Specs — Grain, Iron & Warranty

Quick answer

Whirlpool's published softener lineup covers 8 models spanning 18,000 to 48,000 grains, all demand-initiated (metered) regeneration. Every figure below is captured from official Whirlpool sources with the link shown — match any model's grain rating against your requirement from the size calculator before comparing anything else.

Whirlpool softener lineup at a glance

Whirlpool publishes some of the highest clear-water iron ratings in its class — up to 12 ppm on the models below. If you are on an iron-bearing well, that ceiling (not grain capacity alone) decides whether Whirlpool is even a candidate: check it against your tested iron, then the tier against the size calculator.

Every figure traces to an official Whirlpool source (linked per table); anything the sources don't state is marked "(to be verified)" rather than guessed.

Whirlpool Whole-Home Water Softener Series (WHES line + hybrid + wifi) (Residential)

WHES30 — official spec notes: 15W x 20.5D x 48H in; 110/120V.

WHES33 — official spec notes: max hardness 105 gpg; resin 0.88 cu ft; regen water 1.9 gal/1,000 grains @min dose.

WHESFC (Pro Series Hybrid) — official spec notes: rated doses:11,000 @ 2.6 / 24,700 @ 7.8 / 31,100 @ 13.4 lbs; max hardness 120 gpg; NSF/ANSI 42 & 44; resin 0.98 cu ft; intermittent 13.7 gpm @15psi.

WHES40 — official spec notes: removes up to 125 gpg hardness + 10 ppm clear water iron; Demand Regeneration; 15W x 20.5D x 48H in.

WHES44 — official spec notes: max hardness 140 gpg; rated efficiency 5,060 grains/lb @2.6 lbs; resin 1.23 cu ft; intermittent 18.7 gpm; regen water 2.68 gal/1,000 grains @min dose.

WHES48 — official spec notes: max hardness 160 gpg; resin 1.33 cu ft; intermittent 19.3 gpm @30psi; regen water 3.0 gal/1,000 grains @min dose(44.2 gal @max dose); salt storage 200 lbs.

WHEC46 (Pro Series Smart Wi-Fi) — official spec notes: iQua2 app + 6th Sense; max hardness 160 gpg; max salt efficiency 5,090 grains/lb; salt storage 200 lbs.

How to read these specs against your sizing

Three checks before buying any Whirlpool model: first, get your required rated capacity from the size calculator (hardness + household + iron); second, verify the model's rated iron limit exceeds your tested iron — same-tier models differ here more than anywhere else; third, confirm service flow rate covers your peak simultaneous use (bathrooms × 3–4 GPM as a working figure). The warranty column rewards a slow read: tank, valve and electronics terms are listed separately by most brands and they are not equal.

Salt and maintenance context

Whatever the tier, running cost is mostly salt: expect on the order of 40–80 lb per month for an average household (the regeneration calculator computes it for your exact load), plus an occasional resin cleaner where iron is present. Every model in the current Whirlpool lineup regenerates on demand (metered), which tracks actual water use rather than a calendar — the feature that keeps salt bills honest.

Which Whirlpool tier fits which household

At 15 gpg (very common hard water), the Whirlpool lineup covers: a couple (needs ≈ 21,000 grains rated) → 30,000-grain; a family of four (≈ 42,000) → 44,000-grain; a family of six (≈ 63,000) → outside this lineup. Six-person households on very hard water generally outgrow single-tank retail units — a duplex system or the next brand tier up serves better. Different hardness moves these fast: every ±5 gpg shifts a typical family one tier — see the sizing chart for the full matrix.

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