Hard water in a large home doesn’t just leave unsightly spots on your dishes; it stealthily infiltrates your plumbing, appliances, and skin care routine, escalating maintenance costs and diminishing comfort. When scale buildup clogs pipes and reduces water flow, you face costly repairs and higher energy bills. For families relying on consistent, high-volume water use, the interruptions caused by hard water can disrupt daily life and strain your home's infrastructure.

The system that fixes it

The C-Series Hard Water — Large Home (Twin Tank) System is engineered to tackle the persistent challenges of hard water in spacious households with multiple bathrooms. Central to its effectiveness is the C-Series metered control valve, an advanced head valve that precisely measures water usage and orchestrates the regeneration process only when necessary. This intelligent control reduces water and salt waste, ensuring your system runs efficiently without interruption or guesswork. Beyond the valve, the system’s backbone is its twin high-capacity resin tanks filled with premium 10% cross-linked cation softening resin. These two tanks work in perfect alternation, so while one tank regenerates, the other continues to provide a steady stream of soft water—eliminating any gaps or downtime often associated with single-tank systems. This seamless cycling guarantees your entire home is supplied with softened water 24/7, safeguarding your plumbing, appliances, and skin from the harsh effects of hard minerals.

• C-Series metered control valve precisely tracks water flow to optimize regeneration timing
• Twin high-capacity tanks alternate to provide continuous soft water without interruption
• Durable resin tanks built to handle high volume demands of large homes
• 10% cross-linked cation softening resin ensures effective mineral removal and long-lasting media life
• Serviceable brand components for easy maintenance and reliable performance

Pick your size

Select a size that matches your home’s bathroom count and water usage to ensure your system handles peak demand without sacrificing soft water availability.

What it does for your home

• Eliminates scale buildup in pipes and fixtures, prolonging system lifespan
• Prevents mineral deposits on dishes, glassware, and laundry for sparkling results
• Reduces energy costs by improving appliance efficiency and water heater performance
• Softens water continuously with no hard-water gap, ensuring comfort in showers and baths
• Protects skin and hair from dryness and irritation caused by hard minerals
• Minimizes frequent plumbing repairs and appliance replacements related to hard water damage

By installing the C-Series Twin Tank system, your large home gains consistent protection and savings against the costly effects of hard water.

How the media works

The heart of this system’s softening power lies in its 10% cross-linked cation softening resin. This specialized resin consists of tiny beads designed to attract and capture hard minerals like calcium and magnesium—the culprits behind scale and spots. The “10% cross-linked” designation means the resin has enhanced structural durability, resisting breakdown over time even under heavy use. As water passes through the resin tanks, these beads exchange hard minerals for harmless sodium ions, effectively “softening” the water. The twin tank design ensures one resin bed is always active while the other regenerates, keeping soft water flowing without interruption. This advanced resin technology guarantees efficient mineral removal and a lasting soft water experience for your entire home.

Why buy this system from us

• Equipped with genuine, serviceable brand hardware—meaning easy maintenance and reliable parts availability
• Free U.S. sizing assistance to match your system perfectly to your home’s needs
• Complimentary U.S. shipping delivers your system directly and conveniently
• Complete one-brand build ensures all components are designed to work seamlessly together
• Expert support dedicated to your satisfaction throughout your purchase and installation

Common questions

Q? How does the twin tank system prevent any hard water from reaching my faucets?

A The C-Series Twin Tank system uses two resin tanks that alternate between softening and regenerating. While one tank is active, the other is offline regenerating, so soft water is always available with zero downtime, meaning no hard water “gap” in your supply.

Q? Why is the C-Series metered control valve important for large homes?

A This valve accurately measures your water usage and triggers regeneration only when necessary, avoiding waste of water and salt. It’s especially crucial for large homes where water demand fluctuates, ensuring efficient, uninterrupted soft water delivery.

Q? Can I choose a system size if I have a large home with five bathrooms?

A Yes, for homes with 5–6 bathrooms, the 12" × 52" tank with 2.0 cu ft of media and a 64,000-grain capacity is designed to handle your high demand, providing consistent soft water throughout your entire household.

Shop the C-Series Hard Water — Large Home (Twin Tank) System →

Prefer another valve brand? The same fix comes in Fleck, Autotrol, C-Series, Pentek and Pentair.