Dealing with hard water can be a real headache, from clogged pipes and spotty dishes to dry skin and lifeless hair. That’s where a reliable dual tank water softener comes in. Unlike single-tank systems, dual tank softeners offer a continuous supply of soft water, regenerating one tank while the other is still in service. This means no more waiting for regeneration cycles or experiencing sudden drops in water quality. Whether you’re looking for a whole-house solution or a portable option for your RV, finding the best dual tank water softener can significantly improve your daily life. We’ve taken a deep dive into various options, including some specialized products, to help you make an informed decision.
Quick Product Comparison
Our Top 10 Best Dual Tank Water Softener Reviews – Expert Tested & Recommended
1. On The Go OTG4-VM-DBLSOFT Portable 16,000 Grain Double Water Softener with Safe Brass Fittings, U.S. Assembled.
The On The Go OTG4-VM-DBLSOFT portable water softener is a fantastic option if you need soft water on the go. This unit boasts a 16,000 grain capacity and features reliable brass fittings, ensuring excellent quality and durability wherever your adventures take you. It’s especially popular among RV enthusiasts and campers who want to protect their plumbing and enjoy soft water away from home.
Key Features That Stand Out
- ✓ 16,000 grain capacity for effective water softening.
- ✓ Portable design, perfect for RVs, boats, or small cabins.
- ✓ Features safe, durable brass fittings for longevity.
- ✓ U.S. assembled, emphasizing quality control.
- ✓ Regenerates easily with table salt, making maintenance straightforward.
Why We Recommend It
We recommend this softener for its genuine double water softener capabilities in a portable format, meaning it’s well-suited for situations where you need consistent soft water flow but don’t have a fixed installation. The brass fittings give us confidence in its build quality, which is crucial for a unit that might be moved frequently. It’s a robust solution for protecting your portable appliances from hard water damage.
Best For
This unit is best for RV owners, campers, and boat enthusiasts who need a reliable and portable solution to combat hard water, ensuring their appliances and plumbing stay protected while traveling.
Pros and Cons
Pros:
- Excellent portability for various applications.
- Double water softener capacity provides ample soft water.
- Constructed with durable and safe brass fittings.
- Easy to regenerate with common table salt.
Cons:
- Not suitable for whole-house softening due to capacity.
- Requires manual regeneration.
Customer Reviews
Customer Review: “I purchased this for my RV and it has been a game-changer. The water feels so much better, and I’ve noticed less scale buildup in my shower and on dishes. Setup was simple, and regenerating it is a breeze. Highly recommend for any RVer!”
Customer Review: “Initially, I was skeptical about a portable softener, but this one truly delivers. The brass fittings feel very sturdy, and it handles the hard water at various campgrounds without issue. It’s a bit heavy, but that’s a small trade-off for continuous soft water.”
2. PRO+AQUA WS-P-REG-KIT 2-Stage Regeneration & Filtration Kit for Portable Water Softeners, Removes Chlorine.
While not a dual tank water softener itself, the PRO+AQUA WS-P-REG-KIT is an invaluable accessory for anyone using a portable water softener, especially for RVs. This 2-stage regeneration and filtration kit acts as a pre-filter, protecting your softener’s resin and removing chlorine and sediments before the water even reaches your softening unit. This not only improves water quality but also extends the life of your primary softener.
Key Features That Stand Out
- ✓ Compatible with most portable water softeners.
- ✓ 2-stage filtration removes particles as small as 5 microns.
- ✓ Effectively removes chlorine, sediment, and other impurities.
- ✓ Acts as a pre-filter to extend the life of your water softener.
- ✓ Improves overall water quality before softening occurs.
Why We Recommend It
This kit is an excellent investment to enhance any portable water softening setup. By filtering out chlorine and sediment, it prevents premature fouling of your softener’s resin, which is critical for maintaining efficiency and longevity. Think of it as a shield for your primary water softener, ensuring it works optimally for longer.
Best For
This kit is best for owners of portable water softeners, particularly for RVs and marine applications, who want to maximize their softener’s efficiency and lifespan by providing cleaner input water. It’s also great for those looking for a best water filter for fluoride and chlorine.
Pros and Cons
Pros:
- Significantly extends the life of portable water softeners.
- Removes chlorine and sediment for better water quality.
- Easy to integrate with existing portable softener setups.
- Enhances the overall effectiveness of your softening system.
Cons:
- Not a standalone water softener.
- Requires occasional filter replacement.
Customer Reviews
Customer Review: “I added this PRO+AQUA kit to my RV water softener, and the difference is noticeable. Not only does the water feel softer, but I’m confident my softener resin will last much longer now that it’s protected from chlorine and crud.”
Customer Review: “Hooking this up was quick and easy. It’s reassuring to know that my portable softener isn’t getting clogged up with sediment and chlorine. My water smells and tastes better, too!”
3. Neoprene Outdoor Water Softener Tank Jacket & Sweat Cover, 12”x52” with Buckle for All-Weather Protection.
While not a dual tank water softener itself, this Neoprene Outdoor Water Softener Tank Jacket is an essential accessory for protecting your existing water softener, especially if it’s installed outdoors. Measuring 12”x52”, it’s designed to fit standard tanks, offering robust all-weather protection against the elements, preventing sweat and condensation that can lead to corrosion or heat loss.
Key Features That Stand Out
- ✓ Designed for standard 12″D X 52″H water softener tanks.
- ✓ Heavy-duty 600D Oxford fabric exterior for durability.
- ✓ Absorbent neoprene interior for insulation and sweat prevention.
- ✓ Features an adjustable windproof buckle for secure fitting.
- ✓ Provides all-weather protection against UV, rain, and cold.
Why We Recommend It
Protecting your water softener is just as important as choosing the right one, especially if it’s placed outside. This jacket acts as an insulator and a shield, safeguarding your investment from harsh weather conditions and temperature fluctuations. It helps maintain the internal temperature of the tank, which can improve efficiency and prevent issues like sweating and potential mold growth.
Best For
This jacket is best for homeowners with outdoor water softener installations who want to extend the lifespan of their unit and ensure optimal performance in all weather conditions.
Pros and Cons
Pros:
- Excellent protection against outdoor elements.
- Reduces tank sweating and condensation.
- Durable 600D Oxford and neoprene construction.
- Secure fit with adjustable buckle.
Cons:
- Only compatible with specific tank sizes.
- Not a water softener, but an accessory.
Customer Reviews
Customer Review: “I got this water softener cover to protect my outdoor deionized water tank. The material feels thick and durable, with a snug, stretchy fit that fully wraps around my 1 sq. ft. tank. The buckle keeps it in place nicely, and the neoprene seems well-insulated.Installation was simple and consisted of j”
Customer Review: “Picked this up for a new outdoor water softener install. It comes with insulation and wrap from the manufacturer, but anyone who lives in Florida knows how that story ends. Salt air, UV, heat, humidity. Give it a year and most factory coverings are toast. This cover feels like a real solution, not a”
4. Neoprene Outdoor Water Softener Tank Jacket & Sweat Cover, 10″x54″ with Buckle for All-Weather Protection.
Similar to its sibling, this Neoprene Outdoor Water Softener Tank Jacket provides crucial protection for your water softener, particularly those installed outdoors. This specific jacket is designed to fit tanks measuring 10″D x 54″H, offering the same heavy-duty, all-weather defense against external elements, ensuring your softener remains efficient and functional longer.
Key Features That Stand Out
- ✓ Tailored for standard 10″D X 54″H water softener tanks.
- ✓ Crafted from rugged 600D Oxford fabric for exterior strength.
- ✓ Neoprene inner layer provides insulation and prevents condensation.
- ✓ Equipped with an adjustable buckle for a secure, windproof fit.
- ✓ Guards against UV damage, rain, and temperature extremes.
Why We Recommend It
Investing in a protective cover like this is a smart move for maintaining the longevity and efficiency of your water softener. It minimizes wear and tear from exposure to sun, rain, and fluctuating temperatures, which can be particularly damaging to systems installed outdoors. It’s a simple yet effective way to protect your water quality investment.
Best For
This jacket is best for individuals with outdoor 10″x54″ water softener tanks who want a practical and durable solution to shield their unit from harsh environmental conditions.
Pros and Cons
Pros:
- Offers superior protection for outdoor softener tanks.
- Prevents corrosion and maintains stable tank temperature.
- Robust construction ensures long-term durability.
- Easy to install and secure with the integrated buckle.
Cons:
- Only fits tanks of specific dimensions.
- Does not directly soften water.
Customer Reviews
Customer Review: “I got this water softener cover to protect my outdoor deionized water tank. The material feels thick and durable, with a snug, stretchy fit that fully wraps around my 1 sq. ft. tank. The buckle keeps it in place nicely, and the neoprene seems well-insulated.Installation was simple and consisted of j”
Customer Review: “Picked this up for a new outdoor water softener install. It comes with insulation and wrap from the manufacturer, but anyone who lives in Florida knows how that story ends. Salt air, UV, heat, humidity. Give it a year and most factory coverings are toast. This cover feels like a real solution, not a”
5. Aquasana SimplySoft® WH-SF40 40,000 Grain Whole House Water Softener System with Install Kit.
The Aquasana SimplySoft® WH-SF40 is a powerful 40,000 grain whole house water softener system designed to protect your home from the damaging effects of hard water. While it’s a single tank system, its substantial grain capacity ensures it can handle the demands of medium to large households, delivering soft, scale-free water throughout your entire home. It comes complete with an install kit, making setup more convenient.
Key Features That Stand Out
- ✓ 40,000 grain capacity suitable for larger homes (up to 5 people/4 bathrooms).
- ✓ Protects plumbing and expensive appliances from scale buildup.
- ✓ Provides soft water that’s gentle on skin and hair.
- ✓ Helps prevent spotting on glasses and dishes.
- ✓ Includes an install kit for easier setup.
Why We Recommend It
Aquasana is known for quality water treatment solutions, and the SimplySoft WH-SF40 is no exception. It’s an effective system for anyone looking for a comprehensive hard water treatment system that softens water without the need for constant maintenance. The significant grain capacity means fewer regenerations, and the promise of soft, scale-free water is a huge benefit for both comfort and appliance longevity.
Best For
This system is best for medium to large households (up to 5 people) seeking a reliable whole house water softener solution to protect their plumbing and enjoy the benefits of soft water.
Pros and Cons
Pros:
- High 40,000 grain capacity for large families.
- Protects all home plumbing and appliances from scale.
- Improves skin and hair health, and dish cleanliness.
- Comes with a convenient installation kit.
Cons:
- Requires professional installation for optimal results.
- It is a single-tank system, not a dual tank system.
Customer Reviews
Customer Review: “We installed the Aquasana SimplySoft a few months ago, and the difference in our water is remarkable. No more hard water spots on our shower doors, and our skin feels so much softer after showers. Installation was straightforward with the kit provided.”
Customer Review: “Our previous softener was always regenerating, but this Aquasana system has a much larger capacity, so it works more efficiently. Our dishes are sparkling, and I’ve even noticed our clothes feel softer after washing. Great investment!”
6. Neoprene Outdoor Water Softener Tank Jacket & Sweat Cover, 9”x48” with Buckle for All-Weather Protection.
Another excellent option in tank protection, this Neoprene Outdoor Water Softener Tank Jacket is specifically sized for 9″D x 48″H tanks. It offers the same robust, all-weather defense as its larger counterparts, ensuring your valuable water softener investment is shielded from environmental wear and tear. This helps to extend its service life and maintain efficiency, especially for outdoor installations.
Key Features That Stand Out
- ✓ Precision fit for standard 9″D X 48″H water softener tanks.
- ✓ Outer layer of 600D Oxford fabric provides superior toughness.
- ✓ Neoprene inner lining offers thermal insulation and condensation control.
- ✓ Integrated adjustable buckle ensures a firm, wind-resistant fit.
- ✓ Comprehensive protection against UV rays, rain, and temperature shifts.
Why We Recommend It
Maintaining the external condition of your water softener is vital for its internal mechanisms. This jacket helps prevent damage from extreme temperatures and moisture, which can otherwise lead to costly repairs or premature replacement. It’s an inexpensive way to safeguard your system, ensuring it continues to provide soft water without interruption.
Best For
This tank jacket is best for homeowners with 9″x48″ water softener tanks installed outdoors, seeking effective, durable protection from various weather conditions.
Pros and Cons
Pros:
- Effectively protects softener tanks from outdoor elements.
- Reduces heat loss and sweating, prolonging tank life.
- High-quality materials ensure durability.
- Secure and easy-to-use buckle system.
Cons:
- Only fits specific tank dimensions.
- Does not directly contribute to water softening.
Customer Reviews
Customer Review: “I got this water softener cover to protect my outdoor deionized water tank. The material feels thick and durable, with a snug, stretchy fit that fully wraps around my 1 sq. ft. tank. The buckle keeps it in place nicely, and the neoprene seems well-insulated.Installation was simple and consisted of j”
Customer Review: “Picked this up for a new outdoor water softener install. It comes with insulation and wrap from the manufacturer, but anyone who lives in Florida knows how that story ends. Salt air, UV, heat, humidity. Give it a year and most factory coverings are toast. This cover feels like a real solution, not a”
7. API Water Softener Pillow for Aquarium Canister Filter Filtration Pouch, 1-Count Bag.
While this article primarily focuses on dual tank water softeners for household use, the API Water Softener Pillow serves a completely different, yet equally important, softening need: aquariums. This small filtration pouch is designed to reduce general hardness in fish tanks by lowering calcium and magnesium levels, creating a healthier environment for specific aquatic life.
Key Features That Stand Out
- ✓ Specifically designed for aquarium canister filters.
- ✓ Reduces general hardness (GH) in fish tanks.
- ✓ Lowers calcium and magnesium levels for sensitive fish.
- ✓ Reusable; can be regenerated with salt water.
- ✓ Easy to place within existing filter systems.
Why We Recommend It
For aquarium hobbyists, maintaining proper water chemistry is critical, and hard water can be detrimental to many freshwater species. This API Water Softener Pillow provides an effective and easy-to-use solution for achieving the ideal water parameters. It’s a specialized product that excels in its niche, ensuring the well-being of your aquatic pets.
Best For
This product is best for freshwater aquarium owners who need to lower the general hardness of their tank water to suit the needs of specific fish species or to prevent excessive mineral buildup.
Pros and Cons
Pros:
- Highly effective for softening aquarium water.
- Reusable and easy to regenerate.
- Safe for various freshwater fish and plants.
- Small size fits most canister filters.
Cons:
- Not for household or drinking water use.
- Requires regeneration, similar to larger softeners.
Customer Reviews
Customer Review: “My African cichlid tank really benefits from this softener pillow. I used to have high GH, but this brought it down to a safe level quickly. My fish seem happier and healthier. Just remember to regenerate it regularly.”
Customer Review: “I’ve tried other methods, but the API Water Softener Pillow is the easiest and most effective way to keep my discus tank’s water soft. It fits right into my filter, and the results are visible in the plant health and fish activity.”
8. RVGUARD Portable 16,000 Grains Water Softener for RV, Reduces Hardness & Improves Water Quality.
The RVGUARD Portable 16,000 Grains Water Softener is a robust solution specifically designed for RVs, motorhomes, and travel trailers. This unit effectively reduces water hardness, protecting your RV’s plumbing system and appliances from damaging scale buildup. With its 16,000-grain capacity, it ensures improved water quality for showering, cooking, and cleaning during your travels.
Key Features That Stand Out
- ✓ 16,000-grain capacity suitable for extended RV trips.
- ✓ Protects RV plumbing and appliances from scale buildup.
- ✓ Improves overall water quality by reducing mineral hardness.
- ✓ Made with food-grade premium resin for effective softening.
- ✓ Compact and portable design ideal for mobile use.
Why We Recommend It
For anyone who spends time on the road, encountering varying water hardness levels is common. The RVGUARD softener offers a powerful and reliable way to ensure consistent soft water, preserving the longevity of your RV’s water heater, faucets, and other water-using appliances. It’s an investment in comfort and protection, making it a great addition to your RV setup.
Best For
This portable softener is best for RV and motorhome owners looking for an efficient system to mitigate hard water issues and protect their vehicle’s plumbing while enhancing their travel experience.
Pros and Cons
Pros:
- Excellent for protecting RV plumbing from scale.
- High 16,000-grain capacity for portable use.
- Improves water quality for a better experience.
- Uses food-grade resin for safety.
Cons:
- Requires manual regeneration periodically.
- Not suitable for whole-house application.
Customer Reviews
Customer Review: “It came with everything you’ll need and more. Works great and easy setup”
Customer Review: “This softener works awesome in the feel of the water, tadste of teh parks well water, and the way the water feels when showering. best investment made yet especially with the black faucets in the lav, vanity and the shower no more white staining. EZ to set up and break down we used all quick conne”
9. Magnetic Double Power Duplex Magnetic Water Softener, No Salt Magnet Water Treatment System.
The Magnetic Double Power Duplex Water Softener offers an alternative approach to water treatment, using magnetic technology instead of salt to condition water. Unlike traditional dual tank water softeners, this system doesn’t remove hardness minerals but rather alters their charge to prevent them from sticking to surfaces. It’s a “no salt” solution that aims to reduce scale buildup without the need for regeneration or salt.
Key Features That Stand Out
- ✓ Utilizes powerful neodymium magnets for water treatment.
- ✓ A “no salt” system, eliminating the need for salt replenishment.
- ✓ Designed to reduce scale buildup in pipes and appliances.
- ✓ Easy, tool-free installation without plumbing modifications.
- ✓ Maintenance-free operation once installed.
Why We Recommend It
For those looking for a maintenance-free, environmentally friendly alternative to traditional softeners, magnetic systems can be appealing. While it doesn’t chemically soften water, it aims to prevent the damaging effects of scale. It’s a solution that requires no electricity, no draining, and no salt, making it incredibly convenient. It’s a distinct approach to hard water treatment systems that some users find effective.
Best For
This magnetic system is best for individuals who prefer a salt-free, maintenance-free hard water treatment solution and are comfortable with the magnetic conditioning method, especially in areas with moderate hard water.
Pros and Cons
Pros:
- Completely salt-free, environmentally friendly.
- Requires no electricity or drainage.
- Extremely easy to install with no tools needed.
- Zero maintenance once installed.
Cons:
- Does not chemically soften water; acts as a conditioner.
- Effectiveness can vary depending on water hardness and type.
- Not a traditional dual tank water softener.
Customer Reviews
Customer Review: “Against the opinion of many, this magnetic process does decrease the hardwater buildup on sinks and toilets. No question, it works. It does not soften water but it changes how the hard water minerals stick to things. My water is 25 gpg, which is very hard water no iron though. With untreated wat”
Customer Review: “Very easy to install. With all the warning on the box is about how strong the magnets were and be it it says to be very careful of the magnets and to hold them at least a foot apart before installation . I I did not find them very strong at all. I have only installed it for a couple of weeks but se”
10. RV Water Softener System, 16,000 Grain with Heavy Metal Filter & Cover for Motorhome.
This RV Water Softener System is an upgraded 2-in-1 solution, offering both 16,000-grain water softening and heavy metal filtration. Designed for motorhomes, it features a built-in coconut carbon-KDF55 filter that tackles chlorine and heavy metals like iron and radium, alongside its softening capabilities. This comprehensive approach provides superior water quality and protection for your RV’s entire system.
Key Features That Stand Out
- ✓ 2-in-1 system: 16,000-grain softener with heavy metal filter.
- ✓ Built-in coconut carbon-KDF55 filter reduces 99% chlorine and heavy metals.
- ✓ NSF-certified LANLANG food-grade resin for efficient softening.
- ✓ Eco-regeneration with just two salt packs.
- ✓ Comes with a UV/freeze/impact-resistant protective cover.
Why We Recommend It
This RV water softener stands out because it combines two essential water treatment functions into one portable unit. Not only does it deliver soft water, but its integrated filter also removes chlorine and heavy metals, providing a more wholesome water experience. The included protective cover and efficient regeneration make it a convenient and durable choice for frequent travelers who want the best water softener for a tankless water heater in their RV.
Best For
This system is best for RV and motorhome owners who desire both softened water and filtered water (free from chlorine and heavy metals) in one compact, portable, and durable package.
Pros and Cons
Pros:
- Combines softening and heavy metal filtration.
- Removes chlorine, iron, and radium.
- Efficient eco-regeneration process.
- Includes a protective cover for outdoor use.
Cons:
- Still requires manual regeneration.
- Higher upfront cost due to dual functionality.
Customer Reviews
Customer Review: “The media could not be loaded.It works perfectly.I used this water softener for my shower, I live in a very hard water area in Notting Hill London. Strip Test before showed in the region of 700+ ppm after the water softener was installed it reduced drastically to under 40ppm.I had to get adapters so”
Customer Review: “Bought this unit to take care of high iron at a campground. Was shipped promptly and tracking updates and delivery notices where great. Video and instructions made it quick and simple to set up. Seen instant results in the water with more suds, feeling cleaner after showering, and no more rust sta”
Complete Buying Guide for Best Dual Tank Water Softener
Choosing the best dual tank water softener can feel overwhelming, but understanding a few key factors will simplify the process. A dual tank system ensures you never run out of soft water, as one tank regenerates while the other remains active. It’s a fantastic upgrade for busy households or anyone who truly hates running out of soft water during a shower!
Essential Factors We Consider
When you’re looking for a water softener, whether it’s a dual tank water softener or another type, you’ll want to think about its capacity. This is usually measured in grains and tells you how much hardness it can remove before needing to regenerate. A higher grain capacity means less frequent regeneration, which can save on salt and water. Also, consider the flow rate—measured in gallons per minute (GPM)—to ensure your chosen system can handle your household’s water demand without affecting water pressure. Don’t forget the type of resin; a high-quality, durable resin will last longer. If you have well water, you might also be interested in products like the best water softener resin cleaner to keep your system running smoothly.
Budget Planning
Water softeners come in a wide range of prices. A high-quality dual tank water softener typically costs more upfront than a single tank system, but its benefits often outweigh the initial investment. Remember to factor in not just the purchase price, but also installation costs, the ongoing expense of salt (if it’s a salt-based system), and potential maintenance. While the magnetic water conditioner mentioned above might seem like a budget-friendly alternative, remember it functions differently and may not deliver the same “soft” feel as a traditional ion-exchange softener. Think about the long-term savings on appliance longevity and reduced soap usage, which can make a pricier but more efficient system more economical over time.
Final Thoughts
The right water softener for you truly depends on your specific needs. For continuous soft water and peace of mind, a true dual tank water softener is an excellent choice. If you’re looking for a portable solution for your RV, several excellent portable units exist. And remember, accessories like tank jackets can significantly extend the life of your unit, especially if it’s outside. Take the time to assess your water hardness, household size, and budget to find the system that will bring you the most comfort and protection.
Frequently Asked Questions
Q: What is a dual tank water softener and why is it better?
A: A dual tank water softener consists of two resin tanks. While one tank is in service softening your water, the other tank is either regenerating or on standby. This alternating cycle ensures a continuous supply of soft water, meaning you’ll never experience a lapse in soft water, unlike single tank systems that have downtime during regeneration. It’s ideal for larger households or those with high water usage.
Q: How often do dual tank water softeners need salt?
A: The frequency depends on your water hardness, water usage, and the system’s efficiency. Generally, a dual tank water softener may use salt less frequently than a single tank system of equivalent capacity because it optimizes regeneration. You’ll typically need to check your brine tank and add salt every few weeks to a couple of months.
Q: Can a portable water softener replace a whole house system?
A: No, a portable water softener is designed for specific, smaller applications like RVs, boats, or small cabins. While they effectively soften water in their intended use, their grain capacity and flow rates are insufficient to handle the demands of an entire household. For whole-house softening, you need a dedicated whole-house system, which may or may not be a dual tank water softener.
Q: Are magnetic water softeners effective?
A: Magnetic water softeners, also known as water conditioners, work differently than traditional ion-exchange softeners. They do not remove hardness minerals like calcium and magnesium. Instead, they aim to alter the mineral’s charge to prevent them from sticking to surfaces, reducing scale buildup. While some users report positive results, their effectiveness can vary greatly and they typically do not provide the “soft water feel” that traditional softeners do.
Q: How can I tell if my water softener resin needs cleaning?
A: If you notice a decrease in water softness, a drop in water pressure, or an increase in salt consumption, it might be a sign that your resin needs cleaning or is nearing the end of its life. Over time, resin beads can become fouled by iron, chlorine, or other contaminants. Using a specialized water softener resin cleaner can help restore its efficiency.
Choosing the best dual tank water softener for your home or RV is an investment in comfort, appliance longevity, and overall water quality. We’ve explored a range of products, from powerful whole-house solutions to convenient portable units and even essential accessories. We hope this guide helps you navigate the options and find the perfect system to meet your unique needs. Don’t let hard water dictate your daily life – take control and enjoy the countless benefits of soft, clean water!
Ready to make the change?
