Spec database · Sizing calculator · No fluff

Hard water is a numbers problem. Here are the numbers.

Grain capacity, salt use, flow rate, certifications and price for every major softener, read straight from manufacturer spec sheets, never guessed. Start with the size your house actually needs.

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guessed numbers

What size water softener do you need?

People in householdWater hardness (gpg)Have a test in ppm? Divide by 17.1 to get gpg.Iron (ppm, well water)High water use (large tubs, irrigation, teenagers)

The spec database

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Sorted by capacity. Every number links back to the manufacturer page it was read from. Missing data shows as “—”, never a guess.

Model	Type	Capacity	Flow	Price
SpringWell SS+ Salt-Based Softener	salt-based	80,000 gr	20 GPM	$2,678	Check price
SpringWell SS4 Salt-Based Softener	salt-based	48,000 gr	13 GPM	$1,785	Check price
SoftPro Elite Smart HE 48,000	salt-based	48,000 gr	15 GPM	$1,457	Check price
Aquasure Harmony AS-HS48D	salt-based	48,000 gr	—	$630	Check price
GE GXSH45V	salt-based	45,100 gr	9.5 GPM	$586	Check price
A.O. Smith AO-WH-SOFT-450T	salt-based	45,000 gr	7.5 GPM	—	Check price

Specs read from manufacturer pages. Each unit's page lists its source and check date. “—” means not yet sourced, never guessed.

Find your answer

What does a softener cost?

System prices, installed cost, and what drives the number up or down.

What size do you need?

Household size + water hardness → the grain capacity to shop for.

Salt-based or salt-free?

The honest difference between softening and scale control.

Compare every unit

The full spec database: capacity, salt use, flow, certifications, price.

How we verify specs

Every spec in the database is read from a manufacturer or authorized-retailer page, with the source URL and check date stored per unit. Fields we couldn't verify stay empty. Commercial relationships never change a spec: here's the full method.