Pentair Fleck 5800 SXT Water Softener

Reliable, efficient water softening by Pentair.

The Pentair Fleck 5800 SXT is a dependable, metered water softener designed to reduce hard water minerals, including calcium and magnesium. Built around the proven Fleck control valve platform, this system offers reliable performance, efficient regeneration and straightforward programming.

Whether you're dealing with scale buildup, spots on fixtures, dry-feeling skin or hard water affecting your appliances, the Fleck 5800 SXT is an excellent solution for whole-home water softening.

At Purifi, we offer two resin options so you can choose the system that best suits your water conditions and preferences.

Choose Your Resin

8% Crosslink Resin (Standard)

Our standard resin option and an excellent choice for typical residential water softening applications. Provides reliable hardness removal and efficient performance.

10% Crosslink Resin (Upgrade)

An upgraded resin with increased resistance to chlorine degradation. A good option for customers who want additional resin durability, particularly when treating chlorinated municipal water.

Both options provide effective water softening. The 10% resin is an upgrade in resin composition, not an increase in the system's softening capacity.

Features & Benefits

• Genuine Pentair Fleck 5800 SXT control valve

• Metered regeneration based on actual water usage

• Efficient salt and water consumption

• Easy-to-read digital backlit display

• Battery backup for power interruptions

• High-flow valve design

• Simple programming and maintenance

• Reliable, serviceable design

• Available with standard 8% or upgraded 10% crosslink resin

System Options

Available in multiple sizes to accommodate different household requirements.

• 1.0 cu. ft.

• 1.5 cu. ft.

• 2.0 cu. ft.

Proper sizing depends on household water usage, hardness and required flow rate. Contact us if you're unsure which size is right for your home.

What's Included

• Pentair Fleck 5800 SXT metered control valve

• Matching bypass valve

• Mineral tank

• Selected crosslink resin

• Distributor tube and basket assembly

• Brine tank and brine components

• Installation and programming manual

Warranty

• 5-year control valve warranty

• 10-year mineral tank warranty

Manufacturer warranties apply to defects in materials and workmanship, subject to manufacturer's terms.

Need help choosing?

Not sure which size or resin option is right for your home? We're happy to help. At Purifi, we believe in recommending equipment that makes sense for your water, household and budget.