WSP Twin-Tank Water Softener

After a shower, your skin feels softer and your hair smoother, without that rough, dry sensation you’ve come to expect. The WSP Twin-Tank Water Softener keeps hard minerals from leaving behind that familiar film and stiffness, so your bathroom routine feels like a genuine upgrade every day.

What makes your skin and hair feel that way after showering?

Hard water in your home leaves behind more than just spots on dishes. The minerals—mainly calcium and magnesium—cling to your skin and hair, making them feel dry or rough. You might notice towels stiffening faster, soap not lathering well, or a residue that stays on the shower door no matter how often you clean. It’s not just inconvenient; it’s the ongoing presence of minerals that your water treatment needs to address without interruption.

How the control head manages your soft water supply without gaps

The heart of this system is the metered control head. It keeps track of exactly how much water you use, not just a timer, so it only regenerates—the process that refreshes the treatment media—when needed. The automatic backwash cycle lifts and rinses the media to clear trapped minerals, preparing it for the next batch of water. While one tank is regenerating, the other takes over instantly, ensuring your water supply never stops. This means no drops of hard water during regeneration, a key advantage of twin-tank setups.

Why cation exchange resin is suited to your hard water problem

Inside each tank is high-capacity cation exchange resin. This material swaps hardness minerals in your water for sodium or potassium ions, softening your water effectively. Because the resin is high-capacity, it can handle a large volume before needing to regenerate, matching the needs of a busy household or small commercial use. The twin-tank design ensures this process happens without interrupting your soft water flow.

The role of the 20-inch steel tanks in handling your water

Each treatment tank is a sturdy 20-inch steel unit, built to withstand commercial working pressures and constant cycling demands. This size and strength give the system the capacity and durability needed to serve a typical single-family home reliably. The twin tanks work together so that when one is cleaning its resin, the other is ready to supply soft water uninterrupted.

Is this twin-tank water softener the right choice for your home?

This system fits well with single-family homes where soft water is essential at all times—especially those with high water demands or where downtime is not an option during regeneration. For smaller homes or those with lower water usage, a single-tank system might be sufficient and more economical. On the other hand, if your household has very high flow needs or commercial demands, you might consider larger or additional systems. Confirm sizing against your typical water flow and usage patterns to ensure the best fit.

What you receive with your purchase and what happens next

The WSP Twin-Tank Water Softener includes the two 20-inch steel tanks and the metered control head ready to manage your water treatment smoothly. A bypass valve comes standard—this lets you isolate the system if needed while keeping water flowing to your home during maintenance. You also get 10 feet of discharge hose for the drain line. The tank itself carries a lifetime warranty, and the control head and electronics come with the manufacturer’s warranty. You can order this online with free U.S. shipping included. Once your order is placed, you or your licensed plumber will handle installation, supported by our sizing guidance whenever you need it.

Who this size is right for

Practically speaking, this is a whole-house system, plumbed into the main line so every tap in the house is treated. On a typical 1-inch service line that means a single-family home.

There is no published capacity figure for this item, so we size it from your water rather than from a table. Send your peak flow rate and a water test and we will confirm what you need - it costs nothing and it avoids buying twice.