If you’ve had your water tested for hard water, there are plenty of water softeners available on the market to purchase. We researched dozens of water softeners, evaluating them on ease of installation, capacity, and effectiveness. Our best overall pick, the GE GXSH40V Water Softener, has a high grain capacity, digital controller, and the ability to optimize its regeneration schedule during periods of peak water usage. Here are the best water softeners for every type of household. Its smart features aren’t the only thing that makes this water softener our top pick. This model only takes about 30 minutes to an hour to install, which is much less time than other water softeners on the market. At 14.4 by 22.4 by 47.6 inches, it’s likely small enough to fit in your laundry room or water closet. One of the most unique features of the GE GXSH40V is its blending valve, which allows you to adjust the hardness of your water to match your needs. Using the digital controller, you can adjust water hardness levels, conserving salt usage, or increasing water softness to suit your preference. The controller will also provide you with a “Days to Empty” indicator, giving you an at-a-glance indicator of when it’s time to add more to the 230-pound capacity salt bin.  This water softener not only delivers on its promise to remove iron and grains from your water, but its smart technology almost anticipates your needs, which is why it’s our top pick. Price at time of publish: $649 This water softener has a 36,400-grain capacity and filters water with a hardness up to 90 GPG. Impressively, the regeneration cycle takes just 24 minutes and uses only 17.2 gallons of water. A user-friendly digital controller controls the softener’s settings and regeneration. As with many other water softeners, this compact unit includes a bypass valve to preserve media life.  Price at time of publish: $758 This water softener system is capable of reducing hard water up to 120 grains per gallon and can filter 31,100 grains before regeneration. Regeneration can be time-intensive, taking between 105 and 152 minutes, and also requiring a hefty amount of water (54.7 gallons) when compared to similar softeners.  In addition to softening water to your preferred hardness using a custom blending valve, the GE Water Softener and Filter in One reduces chlorine taste and odor in your water.  Price at time of publish: $499 True to its name, the On The Go has a number features that make it ideal for travelers and anyone likely to uninstall and reinstall the unit in multiple locations. In addition to its 22 by 9.5-inch design, it has a carry handle on top, plus a cap and plug to prevent leaking during travel. It also uses a standard hose connection and requires no tools to install. With a flow rate of three gallons per minute, this water softener is more than capable of keeping up with an RV or marine shower. It also comes with hardness test strips, hose adapters, and a cradle base for stable installation. On The Go also offers a smaller Portable Standard Water Softener, without about half the capacity, but we believe it’s worth the upgrade for the extra capacity. Price at time of publish: $275 Aquasure’s Harmony series is outfitted with fine mesh resin that captures minerals like calcium, magnesium, and iron. It has the ability to filter water with a hardness up to 110 GPG. Choose between water softeners with the capacity to filter 32,000, 48,000, or 64,000 GPG before regeneration is needed. The regeneration cycle uses 40 gallons of water and lasts 98 minutes. Regardless of the size tank you choose, the Aquasure has a digital control console that monitors water consumption and regulates the frequency of regeneration.  Price at time of publish: $579 This model from Rheem uses a treated resin bed to capture calcium and magnesium particles from hard water. After processing 32,000 grains, the system will regenerate—which takes two hours and uses 24 gallons of water. The salt storage tank holds 175 pounds and needs periodic refilling, but the system has a low salt monitor that will provide a visual alert when the salt supply is running low. Rheem also equipped this model with technology to detect water usage patterns and optimize regeneration cycles to conserve salt, water, and energy.  Price at time of publish: $419 Salt-based softeners are the most popular systems for residential use. However, they do require ongoing attention and maintenance. Homeowners will need to purchase a supply of sodium chloride or potassium chloride regularly and keep the salt holding tank full for regeneration. Resin media generally has about a 10-year lifespan, but it depends on water quality and usage. Salt-free and electromagnetic water conditioners don’t remove calcium and magnesium particles from the water. Instead, these systems neutralize the particles to eliminate their ability to stick to plumbing fixtures and appliances. The benefit of conditioned water is that it prevents scale build-up without the need to regularly buy salt and add it to the system. 

Capacity

Water softener capacity is usually indicated in how many particles the system can filter before needing a regeneration cycle. Capacity generally ranges from about 28,000 grains for small water softeners to 80,000 grains for heavy-duty softener systems. An average-sized water softener for three to four-person households is usually in the range of 32,000 to 40,000 grains. 

Bypass Valve

A bypass valve enables you to divert water from the softener system, which can be useful in a number of situations. When turned on, the valve will direct the flow from your water pipe past the softener system—enabling you to work on the softener without shutting off water to the whole house. A bypass valve is also sometimes useful when using a volume of water where water hardness is not an issue. For example, if you’re doing yardwork it might make sense to divert water from the softener. Doing so saves the resin media from filtering water unnecessarily and shortening the time until the system’s next regeneration cycle. 

Why Trust The Spruce?

This article was researched and written by Erica Puisis, a professional writer that specializes in large and small appliances for the home. She has written more than 200 articles for The Spruce, including articles on water testing kits, water heaters, and filtration systems. Emma Phelps also contributed to this article by contacting Tim Dunphy, a water expert at Leaf Home Water Solutions. Dunphy provided insightful context for understanding how water softeners function as well as best practices for maintaining their systems. A water softener helps prevent potential long-term damage to your plumbing and can extend the life of your dishwasher and washing machine. Conversely, for some people, the extra sodium in softened water can be harmful. Anyone with high blood pressure should check with a doctor before installing a water softener. According to guidance released by the Minnesota Department of Health, people on a low-sodium diet should keep a separate, un-softened tap for cooking and drinking. The addition of another appliance in your home does come with added maintenance requirements to ensure the water softener is functioning as intended. Check the manufacturer’s instructions regarding placement. Water softeners should not be placed in direct sunlight, or in areas where freezing temperatures may occur.