WSP 150,000 Grain Twin-Tank Water Softener

When your laundry feels rough and your colors fade faster than you'd like, it's often hard water to blame. The WSP 150,000 Grain Twin-Tank Water Softener helps you protect your fabrics by providing a steady supply of softened water, even during system regeneration.

The laundry issue that signals hard water's at work

You notice your clothes aren’t as soft as they used to be. Whites look dingy and colors lose their brightness over time. Towels feel stiff and scratchy after washing. That light film on your shower door and the orange ring in your toilet tank are signs too. These are all common effects of hard water, which leaves mineral deposits behind. Over time, these deposits cling to your fabrics, making them wear out sooner and feel less comfortable.

A control head that keeps soft water flowing without interruption

This twin-tank system’s control head counts your actual water use, so it regenerates only when necessary. It switches between two mineral tanks, allowing one to recharge while the other supplies softened water—meaning you never lose access to softened water. You can even monitor and adjust the settings from your phone, with all preferences saved even during a power outage. The 1.5-inch porting supports high flow rates, fitting homes or buildings with many water outlets and constant demand.

High-capacity resin media targeted at hardness

Inside the twin tanks is a large volume of cation exchange resin designed to trap the minerals that cause hardness. This resin swaps those minerals out for sodium or potassium, softening your water. Beneath the resin sits a graded gravel underbed that ensures water flows evenly through the media for consistent treatment. This setup is tailored specifically to handle hard water problems and reduce scale buildup inside your pipes and appliances.

Twin tanks large enough for continuous high-demand use

Each tank holds about 4.69 cubic feet of media, providing a combined softening capacity of roughly 150,000 grains. This substantial capacity allows the system to serve large homes, commercial buildings, or multi-unit sites with many bathrooms or water outlets. Because the system alternates between tanks, it keeps up with heavy, uninterrupted water use, avoiding downtime during regeneration cycles.

Who benefits most from this twin-tank system

This water softener is made for places where softened water is needed around the clock—homes with multiple bathrooms, commercial sites, or facilities with continuous water use. If your household or business has fewer water outlets or lower demand, a smaller softener might suit you better. But if your water use is high and you can’t afford gaps in softened water supply, this system fits well.

What’s included and the next step

With this purchase, you get a system backed by a lifetime warranty on the tanks—the pressure vessels themselves. The control valve and electronics carry the manufacturer’s standard warranty. A bypass valve is included so you can isolate the softener and still have water flow to the rest of your building during maintenance. You’ll also receive 10 feet of discharge hose for the drain line. Shipping in the U.S. is free. Once you’ve confirmed this is the right size, you can order online or reach out for sizing help from experts who handle these daily.

Who this size is right for

At 150,000 grains of capacity this suits a commercial or multi-unit site - around continuous high demand with many outlets.

Those figures assume average hardness and normal use. If your water is unusually hard, if you have iron as well as hardness, or if the house simply runs more water than most, take the next size up - an oversized softener regenerates less often, while an undersized one runs out of soft water between cycles. Send us your water test if you would like the sizing checked before you order.