WSP 120,000–600,000 Grain Whole House Water Softener - Commercial

For businesses or multi-unit buildings facing tough hard water, the WSP 120,000–600,000 Grain Whole House Water Softener from Water Softener Plus (WSP) offers a high-capacity solution to reduce scale buildup and soften water throughout large properties. It’s designed to handle heavy, continuous demand and many water outlets.

The daily clean you don't see going away

Hard water leaves a stubborn film of scale on shower doors, makes glassware spotty no matter how carefully you wash it, and leaves laundry feeling stiff even after extra rinses. You find yourself scrubbing faucets and fixtures regularly, only to see the same chalky buildup return. Soap just won’t lather the way it used to, and your water-using systems show the wear. It’s not just a nuisance—it’s a constant drain on time and effort.

How the control head manages water use and system upkeep

The system’s control head uses a built-in electronic meter to track exactly how much water you use. This helps it decide when to start a backwash cycle, which lifts and rinses the media inside the tank to clear out minerals and refresh the softening capacity. The NXT controller automates this process, so the system adjusts itself based on actual demand, saving salt and water by running the cycle only as needed.

Media that targets hardness for lasting scale reduction

Inside the tank is high-capacity cation exchange resin—this special material swaps the hardness minerals in your water, like calcium and magnesium, for sodium ions. This ion exchange process helps reduce the minerals that cause scale buildup, protecting your plumbing and fixtures. The resin’s capacity and design make it well suited to handle large volumes of hard water reliably over time.

A robust tank built for heavy use

The water softener comes with a durable pressure vessel designed to hold the media and withstand commercial or multi-unit use. While the exact tank size depends on your specific setup, it’s made to meet the needs of properties with many water outlets running continuously. The tank’s quality is assured with a lifetime warranty, giving confidence in its long-term durability.

Who benefits from this system’s capacity and design

This whole house water softener is built for commercial sites or large residential buildings with continuous high water demands. It suits properties with many bathrooms and water outlets that need a steady flow of softened water. Smaller homes or those with lower daily water use might be better served by a system with a lower grain capacity, while this one fits where volume and flow cannot be compromised.

What you get with this system and how it’s supported

When you order, the system includes the main softening tank and control head with the NXT electronic meter, plus a bypass valve so you can isolate the system during maintenance without shutting off water to your building. Also included is 10 feet of discharge hose for the drain line. The pressure vessel carries a lifetime warranty, and the control valve and electronics are covered under the manufacturer’s own warranty terms. Installation is done by your local licensed plumber, with free expert sizing help from our team to ensure the right setup for your water.

Getting started with your quote

This system requires a custom quote and sizing confirmation from Water Softener Plus. Our specialists will ask about your water use, the hardness problem you want to solve, and your ZIP code to recommend the right configuration and send pricing details. Reach out to request your free, no-obligation quote and take the next step toward reducing scale and easing your cleaning burdens.

Who this size is right for

At 600,000 grains of capacity this suits a commercial or multi-unit site - around continuous high demand with many outlets.

Sizing is a trade-off, not a target. Go bigger and it regenerates less often and uses less salt per gallon softened; go smaller and you will find the soft water running out before the next cycle. When in doubt, up. Send us your water test if you would like the sizing checked before you order.