WSP 120,000 Grain Twin-Tank Water Softener - Meter

If your home or building struggles with hard water but can’t afford to lose soft water during system regeneration, the WSP 120,000 Grain Twin-Tank Water Softener provides continuous soft water without interruption. It’s designed to handle high daily water use reliably.

The problem you’re dealing with

If you’ve noticed stubborn scale buildup on faucets, orange rings in your toilet tank, mineral spots on glassware, or stiff towels after laundry, you’re likely facing hard water. More importantly, if your current softener stops providing softened water while it refills itself—a process called regeneration—you’re stuck with hard water during that time. That can cause damage and inconvenience in everyday living or facility operations.

Why this happens

Hard water contains minerals like calcium and magnesium that leave deposits as water evaporates. When a water softener uses a single tank, it needs to pause softening to recharge, or regenerate, its resin that captures these minerals. During regeneration, untreated water passes through the system, so your water temporarily hardens again. If your household or business can’t be without softened water even briefly, this single-tank approach doesn’t fit your needs.

What it costs you to leave it as is

Hard water that gets through during regeneration leads to faster scale buildup inside your water heater and plumbing, which shortens their life span and reduces efficiency. You’ll use more soap and detergent since hard water doesn’t lather well, and your appliances like dishwashers and washing machines will have to work harder. Over time, cleaning tasks take longer, and stains from minerals become harder to remove.

How this system fixes it

The twin-tank design means two mineral tanks work in turn. While one tank is softening your water, the other is regenerating quietly in the background. This switch-over happens automatically, so you never lose soft water to the taps. The system uses ion exchange—a process where resin beads inside the tanks swap hardness minerals in your water for sodium, softening it efficiently.

What this system can handle

The WSP 120,000 Grain Twin-Tank Softener is built for homes or facilities with substantial water demand that cannot pause softened water supply. It handles high daily volumes by switching tanks as needed, preventing downtime. This system copes well with typical hard water levels and is sized for those who find smaller units fall short during busy times. Its meter-based control monitors water flow to schedule regeneration precisely, not just on a timer, ensuring efficient use of salt and water.

What you actually get

This system includes two durable mineral tanks with gravel beds and commercial-grade distributors inside to ensure even water flow. It features a 1-1/2-inch commercial twin-tank control valve with Bluetooth connectivity for remote monitoring and adjustments. A commercial brine tank with a reliable brine valve and air check controls the salt solution used during regeneration. You also receive a bypass valve included at no extra cost, allowing you to isolate the system for service without shutting off water to your building, plus 10 feet of discharge hose for convenient drain setup. The pressure vessel tanks come with a lifetime warranty for peace of mind.

Is this the right size for you?

This twin-tank system is ideal if your household or facility needs uninterrupted soft water and has a heavy daily water use—such as larger families or commercial properties. If your water use is moderate and you can manage short regeneration downtimes, a smaller single-tank system might be enough and simpler to maintain. For extremely high hardness levels or specialized water problems, additional treatment options could be needed alongside this softener.

Living with it

Maintaining the system involves adding salt to the brine tank periodically and checking the bypass valve operation. The meter-based controller schedules regenerations as needed, reducing wasted salt and water. Because the system switches between tanks automatically, you won’t notice regeneration downtime. The included Bluetooth control lets you monitor and manage the system remotely, helping you keep on top of maintenance without guesswork.

What it won’t do

This water softener reduces hardness minerals but does not remove sediment, chlorine, bacteria, or other contaminants. If your water has these issues, you’ll need additional filtration or treatment systems designed for those specific problems. This system also doesn’t address water acidity or iron stains beyond what typical softening handles.

Why buy it from us

Water Softener Plus (WSP) offers this reliable twin-tank softener with components that can be serviced or replaced over time, rather than sealed disposable parts. The pressure vessels have a lifetime warranty, and our team ships the system from Tampa with free U.S. delivery included in the price. We provide real sizing support from experienced water-treatment professionals to help you get the right system for your needs. Plus, we back your purchase with a 90-day money-back guarantee for added confidence.

Included with this system

• Lifetime warranty on the tank. The control valve and electronics carry the manufacturer's own warranty.
• Bypass valve included, so the system can be isolated for service while water keeps running to the house.
• 10 feet of discharge hose for the drain line.

Specifications

What this system handles

• Scale on fixtures and glassware
• Soap that won't lather
• Stiff laundry and towels
• Scale inside the water heater

The next step

Order your WSP 120,000 Grain Twin-Tank Water Softener online today and ensure continuous soft water without interruption. Our team is ready to assist with sizing questions before you buy.