CS21H 2026 Whole House Water Softener, 34,000-Grain for 1-5 People

Key features

• WHOLE-HOME SOFT WATER FOR DAILY COMFORT — Designed for households of 1-5 people, this 34,000-grain water softener system delivers soft water throughout the home for showers, sinks, kitchens, and laundry.
• HELPS REDUCE HARD WATER BUILDUP — Ion exchange targets calcium and magnesium, the minerals responsible for limescale, water spots, and stiff-feeling fabrics. This helps reduce hard-water buildup on plumbing fixtures and water-using appliances.
• GEN2 UP-FLOW REGENERATION TECHNOLOGY — The high-efficiency softening system uses up to 40% less salt and up to 36% less water than conventional down-flow regeneration. This efficient process helps reduce waste and long-term operating costs while delivering consistent soft water.
• DIGITAL CONTROL SYSTEM — The built-in display shows real-time water use and system status at a glance. Straightforward controls make routine monitoring, settings, and maintenance easier without adding unnecessary complexity.
• CONVENIENCE FOR DAILY LIVING — Vacation Mode helps manage periods away from home, while Power Failure Memory Backup retains settings during an outage. A push-open lid and enlarged salt opening make routine refills easier.
• 128 LB SALT TANK — The integrated salt tank holds up to 128 lb of salt to support regular household operation. Refill timing depends on local water hardness, water use, and regeneration settings.
• SPACE-SAVING ALL-IN-ONE DESIGN — The integrated cabinet measures 20.52" D x 10.63" W x 40.93" H, fitting garages, basements, utility rooms, mechanical closets, and other residential spaces while keeping salt access within the same footprint.
• FLEXIBLE RESIDENTIAL CONNECTIONS — 1" NPT inlet and outlet connections plus a 3/4" straight connector support common household plumbing layouts for new installations or replacements. Confirm local codes and site-specific parts before installation.

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