Softener and filter combo · Fleck

Fleck 5600SXT 48,000-Grain Water Softener and Filter System

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

Updated October 2026

Quick verdict

A practical softener and filter combo 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
Control valve
Fleck 5600 SXT
Regeneration
Metered Regeneration
Mesh
Fine Mesh
Material
genuine iron, resin
Dimensions (seller)
10"L x 10"W x 62"H
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What it does for your water

The Fleck 5600SXT 48,000-Grain Water Softener and Filter System is a softener and filter combo rated at 48,000 grains on a Fleck 5600 SXT control valve.

The rating assumes a heavy salt dose; at a salt-saving setting expect about 36,000 grains from its rating, enough for up to 4 people on 15 grains-per-gallon water regenerating weekly, or 2 on 25 grains per gallon. Run your household's numbers.

Softener and filter come as one package. Read what the filter stage targets (sediment, chlorine or iron) and how often it needs new media.

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.

Other listed details: features listed Programmable; mounting Countertop; regeneration Metered Regeneration; power Corded Electric; capacity stated as 99 lb; model 5600.

The listing gives dimensions of 10 in (L) x 10 in (W) x 62 in (H), a shipping weight of 99 lb and complete system in the box.

Warranty, per the listing: 60 months.

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

Loses

  • Service flow not stated
  • Plumbing, drain and outlet needed
  • 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
Features (seller)ProgrammableRetailer
Dimensions (seller)10"L x 10"W x 62"HRetailer
Materialgenuine iron, resinRetailer
Mounting / installationCountertopRetailer
MethodIon ExchangeRetailer
Product weight99 lbRetailer
Model nameIron Blaster Fine MeshRetailer
Warranty60 monthsRetailer
Grain capacity (maker)48,000 grainsRetailer
RegenerationMetered RegenerationRetailer
Control valveFleck 5600 SXTRetailer
MeshFine MeshRetailer

Units to weigh against it

Other water softeners in the catalog

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Final verdict

A practical softener and filter combo 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 Fleck 5600SXT 48,000-Grain Water Softener and Filter System 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.