Whole-house softener · DuraWater

DuraWater Fleck 5600SXT 48,000-Grain Water Softener

48,000-grain softener for up to 4 people at 15 gpg

Updated October 2026

Quick verdict

A sound whole-house softener for up to 4 people on 15 gpg water.

Strength
48,000-grain rating.
Trade-off
Service flow not stated.
Right buyer
Up to 4 people on 15 gpg water.
Grain capacity (maker)
48,000 grains
Resin volume
1.5 cu ft
Control valve
Fleck 5600 SXT
Tank size
10x54
Voltage
24 V
Dimensions (seller)
10 x 10 x 54 inches
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What it does for your water

The DuraWater Fleck 5600SXT 48,000-Grain Water Softener is a whole-house softener rated at 48,000 grains on a Fleck 5600 SXT control valve.

Grain ratings are full-salt figures. At an efficient salt setting its 1.5 cu ft of resin delivers about 36,000 grains between regenerations, enough for up to 4 people on 15 grains-per-gallon water regenerating weekly, or 2 on 25 grains per gallon. Size it to your own water.

The Fleck 5600 SXT head is one of the most widely serviced valves; seal kits, pistons, boards and meters that name it are in the valve parts lookup.

From the listing: tank 10x54; model 5600; resin 1.5 cu ft; valve Fleck 5600 SXT.

The listing gives dimensions of 10 x 10 x 54 inches and a shipping weight of 0.01 ounces.

Is it the right unit for your house?

Choose it when

  • Up to 4 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

  • 48,000-grain rating
  • Fleck 5600 SXT valve
  • 1.5 cu ft of resin

Loses

  • Service flow not stated
  • 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 number5600Retailer
Product weight0.01 ouncesRetailer
Dimensions (seller)10 x 10 x 54 inchesRetailer
Voltage24 VRetailer
Grain capacity (maker)48,000 grainsRetailer
Resin volume1.5 cu ftRetailer
Control valveFleck 5600 SXTRetailer
Tank size10x54Retailer

Units to weigh against it

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Final verdict

A sound whole-house softener for up to 4 people on 15 gpg water.

Where to buy

Our links open this exact model's product page. Prices and stock change; check what's included before you order.

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

How many people is the DuraWater Fleck 5600SXT 48,000-Grain Water Softener for?
At an efficient salt setting it delivers about 36,000 grains between regenerations: up to 4 on 15 gpg water, or 2 on 25 gpg, regenerating weekly. Iron adds load: each ppm counts as about 4 gpg.