WSP Twin-Tank Water Softener - Ski

The WSP Twin-Tank Water Softener - Ski is a heavy-duty twin-tank system designed for homes or buildings that cannot go without soft water during regeneration. It provides continuous soft water by switching between two tanks, preventing any interruption in softened water supply.

The problem you’re facing

If you’ve noticed hard water leaving stains on fixtures, a rough feel to towels, or scale buildup inside appliances, you’re dealing with hard water. But if you can’t stand losing soft water even for a short time—like when your water softener is busy regenerating—you need a system that keeps soft water flowing nonstop. A typical single-tank softener stops supplying softened water during regeneration, leaving you with hard water for a few hours. That means spotting on dishes, scaling, and all the usual hard water hassles returning temporarily.

Why it’s happening

Hard water contains minerals like calcium and magnesium that cause buildup and spotting. Soft water systems work by exchanging these minerals for sodium or potassium ions in a process called ion exchange. But a single-tank softener needs to pause water softening when it’s regenerating—that is, cleaning and recharging its mineral-absorbing resin. During that time, untreated hard water flows through your pipes. The twin-tank setup uses two tanks so one can soften water while the other regenerates, keeping your water soft all the time.

What it’s costing you to leave it

Allowing hard water through even for a short stretch can be costly over time. Scale can build inside your water heater, shortening its lifespan and raising energy bills. Soap and detergent don’t lather as well, so you use more and still don’t get the cleaning results you want. Appliances like dishwashers and washing machines work harder and may need repairs sooner. Surfaces get stained or etched, meaning more scrubbing to keep things clean. If you’ve experienced any of these, you know the time and hassle add up.

How this system fixes it

This system uses twin tanks with ion exchange resin inside each. While one tank treats your water, the other tank is busy regenerating its resin, readying it for the next cycle. This design ensures your water stays softened 24/7, with no interruptions or hard water passing through, even during maintenance cycles.

What this system can handle

The WSP Twin-Tank Water Softener - Ski supports two fiberglass tanks, either 21 or 24 inches in diameter, designed for heavy-duty use. It’s built to handle high water volumes and continuous flow without dropping pressure or softening quality. This system suits homes or buildings where water use never pauses and soft water is essential at all times—multi-family homes, offices, or any facility that can’t afford a break in soft water supply. Its robust skid frame weighs close to 290 pounds and is engineered to hold the tanks, plumbing, and valves securely, ensuring long-term stability and serviceability.

What you actually get

This system includes the twin fiberglass tanks mounted on a strong, corrosion-resistant skid platform built specifically for commercial-grade water treatment. You’ll receive a bypass valve included at no extra charge, allowing you to isolate the system and keep water flowing to your property during service. Also included is 10 feet of discharge hose to connect to your drain line. The pressure vessels themselves carry a lifetime warranty, so you have confidence in their durability. The control valve and electronics come with the manufacturer’s standard warranty.

Is this the right size for you?

This twin-tank system is designed for continuous soft water needs in larger homes or facilities with steady, high water use where soft water cannot be interrupted. If your water use is lower or you can manage without soft water during regeneration, a single-tank softener might be sufficient and more cost-effective. Conversely, if your water demand is exceptionally high or you have multiple softening needs, you might consider a larger commercial setup beyond this model.

Living with it

Maintenance involves periodic checks of the resin’s effectiveness and scheduled regeneration cycles, which the system manages automatically. The bypass valve makes servicing easier without shutting off your water supply. You’ll need to ensure the discharge hose is properly connected and periodically inspect it for wear. The system’s design supports straightforward maintenance by your local licensed plumber, keeping ongoing effort and cost manageable.

What it won’t do

This system reduces the hardness minerals in your water but does not address other issues like iron staining, sulfur odors, microbial contamination, or chemical pollutants. If you have those problems, you’ll need specialized filtration or treatment systems tailored to those concerns.

Why buy it from us

Water Softener Plus (WSP) provides this system as a fully serviceable unit with genuine, durable components. The tanks are covered by a lifetime warranty, and the included bypass valve is a practical feature competitors often charge extra for. We ship from Tampa with free U.S. shipping included and offer real sizing help from experienced staff who understand your water problems and needs. Our 90-day money-back guarantee adds peace of mind.

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

To find out if the WSP Twin-Tank Water Softener - Ski is right for your home or building, request a free quote and sizing consultation from the WSP team. Provide your water problem details and ZIP code, and we’ll confirm the best configuration for your water and send pricing information promptly.