CS21H 2026 Whole House Water Softener, 34,000-Grain for 1-5 People | Gen2 Up-Flow Regeneration, High-Efficiency Digital Control Head, Digital Display, Easy Salt Refill, Vacation Mode
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Availability:
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Sunday, Aug 30
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Size: 34,000 Grains
Features
- WHOLE-HOME SOFT WATER FOR DAILY COMFORT Designed for households of 1-5 people, this 34,000-grain water softener system delivers soft water throughout the home for showers, sinks, kitchens, and laundry.
- HELPS REDUCE HARD WATER BUILDUP Ion exchange targets calcium and magnesium, the minerals responsible for limescale, water spots, and stiff-feeling fabrics. This helps reduce hard-water buildup on plumbing fixtures and water-using appliances.
- GEN2 UP-FLOW REGENERATION TECHNOLOGY The high-efficiency softening system uses up to 40% less salt and up to 36% less water than conventional down-flow regeneration. This efficient process helps reduce waste and long-term operating costs while delivering consistent soft water.
- DIGITAL CONTROL SYSTEM The built-in display shows real-time water use and system status at a glance. Straightforward controls make routine monitoring, settings, and maintenance easier without adding unnecessary complexity.
- CONVENIENCE FOR DAILY LIVING Vacation Mode helps manage periods away from home, while Power Failure Memory Backup retains settings during an outage. A push-open lid and enlarged salt opening make routine refills easier.
- 128 LB SALT TANK The integrated salt tank holds up to 128 lb of salt to support regular household operation. Refill timing depends on local water hardness, water use, and regeneration settings.
- SPACE-SAVING ALL-IN-ONE DESIGN The integrated cabinet measures 20.52" D x 10.63" W x 40.93" H, fitting garages, basements, utility rooms, mechanical closets, and other residential spaces while keeping salt access within the same footprint.
- FLEXIBLE RESIDENTIAL CONNECTIONS 1" NPT inlet and outlet connections plus a 3/4" straight connector support common household plumbing layouts for new installations or replacements. Confirm local codes and site-specific parts before installation.
- FOR CITY WATER AND WELL WATER Suitable for municipal and private well water. Test your water before use: this softener removes calcium and magnesium ions only, not iron. For well water or sediment concerns, a pre-filter is strongly recommended to protect the system and extend its service life.
- DESIGNED FOR STEADY HOUSEHOLD FLOW The 1" connections support normal whole-home water flow when the system is correctly sized, installed, and maintained. Actual pressure depends on incoming water pressure, plumbing configuration, water quality, and simultaneous household demand.
Brand: camenae
Special Feature: Heavy Duty, LED Display, Leak Proof, Programmable, Water Saver Technology
Product Dimensions: 40.93"L x 10.63"W x 40.93"H
Material: Fiberglass, Polyethylene
Included Components: 1 x Water Softener, 1 x User Manual
Package Information: Bottle
Installation Type: Whole House Water Tank
Purification Method: Ion Exchange
Power Source: Corded Electric
Item Weight: 95 pounds
Other Special Features of the Product: Heavy Duty, LED Display, Leak Proof, Programmable, Water Saver Technology
Container Type: Bottle
Installation Type: Whole House Water Tank
Purification Method: Ion Exchange
Power Source: Corded Electric
Water Saving Percentage: 40
Item Dimensions L x W x H: 40.93"L x 10.63"W x 40.93"H
Item Weight: 95 pounds
Material Type: Fiberglass, Polyethylene
Brand Name: camenae
Included Components: 1 x Water Softener, 1 x User Manual
Model Name: Water Softener
Model Number: CS21H-0935
Warranty Description: 1 Year Full Coverage, 3 Years Electronics, 10 Years Resin Tank
Manufacturer: Camenae
Number of Items: 1
Unit Count: 1 Count
Manufacture Year: 2026
Part Number: CS21H-0935
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Aug 30
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 40,000 Grains
I took a while to leave this review because I really wanted to be honest about this product. A whole-house water softener is not a small or inexpensive upgrade, so I wanted to give it enough time to see whether it was truly worth the investment. After using it, I can confidently say I am very pleased with it! The difference in the water quality is noticeable. Showers feel better, dishes have fewer spots, and I’ve noticed less of the buildup that comes with hard water. It has been great having soft water throughout the entire house instead of dealing with hard water issues in different areas. I also really appreciate the smart features. The app and touchscreen make it easy to monitor the system, check settings, and keep track of maintenance without constantly having to think about it. The design is compact and well thought out, which makes it much easier to fit into a utility space. This was definitely an investment, but for us it has been one of those upgrades that makes everyday life better. If you’ve been debating whether a whole-house water softener is worth it, I can’t recommend this one enough!
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Reviewed in the United States on July 31, 2026 by T
Size: 34,000 Grains
I have been looking forward to this for a while as my city water is very hard. This product is less expensive than many similar softeners on the market. I elected to have it professionally installed as my current setup did not have a drain or bypass. The cost for my professional install was about $900 and took about a half of a day. The unboxing was uneventful and the unit was self explanatory. The control panel did easily pop out of place but it was easy to place back. Once install was complete we followed the directions to place salt and start the water flow. We did have one issue with startup. The control panel board was lose and it would lose power unless in perfect position. Once in position there is no reason it should move again so not too worried about it. We put in about 45 pounds of salt with plan to add more later just to the water line. This is to prevent salt clumping or residual clogging things. In programming the hardness level, it was not like other softeners where you enter the hardness number. You actually enter hardness in parts per million which is simply multiplying the hardness number by 17. Now after having it in for several days it has changed our water completely! It is so much softer. My plumber recommended manual regen after a few days which I am doing as I write this. My home typically has 2 to 4 people with hard city water. This machine seems perfect for that scale. Based on the cost for similar units I would recommend this. Make sure to buy hardness test strips to test before and after as well as once in a while to ensure the right settings. My body is so grateful after feeling the difference in the shower.
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Reviewed in the United States on July 18, 2026 by Time to Be Frank
Size: 40,000 Grains
I installed this to replace an older water softener, and the setup was about what I'd expect for a whole-house system. Once it was running, the touchscreen made it easy to check settings without digging through a complicated menu. The WiFi connection was a nice bonus. Being able to check the system from the app and get reminders when the salt level is getting low is more convenient than having to remember to check it myself. After it had been running for a while, the water felt noticeably softer. Soap rinsed more easily, and hard water spots were less noticeable than before. It's definitely a more modern take on a traditional water softener. Between the touchscreen, app support, and maintenance reminders, it takes some of the guesswork out of keeping the system running.
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Reviewed in the United States on August 3, 2026 by MKultra
Size: 40,000 Grains
This water softener has been a really nice upgrade for our home. I love being able to check the system through the WiFi app, and the touchscreen makes everything easy to understand and adjust. The salt level reminder is especially helpful because I don’t have to constantly remember to check it myself. The system runs quietly, and I’ve noticed a difference in the water quality around the house. The vacation mode is another thoughtful feature that makes it feel like the system was designed for real everyday life.
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Reviewed in the United States on July 28, 2026 by Amazon customer
Size: 40,000 Grains
This was the second unit that I ordered and came with broken parts because of the bad packaging from the manufacturer, there is not way to contact the seller to ask questions about the installation,It doesn’t support WIFI only Bluetooth connectivity, part of the setup menu is locked with a password that doesn’t come in the manual or anywhere else that I could find, Amazon customer support doesn’t have any information on the seller or how to contact them directly either. If anyone here have a way to contact them please share that information with us, because I know that I’m not the only buyer that had and have problems with this product.
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Reviewed in the United States on August 4, 2026 by Adria O. Alba
Size: 34,000 Grains
This is an excellent deal on a whole house water softener. When I bought a house in the country 13 years ago, it came with a Culligan silver series water softener to help combat the mineral content (especially iron) in the well water. While the Culligan did a descent job of filtering my water, it came at a price. First of all, it required a resin tank AND a brine tank. Both of which took up a lot of space in my cramped utility room. Secondly, when it would go into regen mode (to clean the resin), it used so much water that it would overflow my septic tank into the backyard. This unit, by Camenae, has eliminated BOTH issues my Culligan had at nearly an 85% savings! I was able to throw away my Culligan and install this one for less than what the "Cullgan Man" wanted just to troubleshoot my old water softener. It was very easy to install in place of my old unit. Of course, installation will be a little bit more involved if you've never had one plumbed into your house before. Overall, I'm very happy with my new water softener. I especially appreciate its small footprint. Not only has this unit saved me a great deal on space, but it's also saved a significant amount from my bank account as well. It even uses less salt per month compared to my old softener. Durability will require the test of time, but I expect it to last me several years of hard service. With no negatives to mention, I'm giving this water softener a solid 5 stars.
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Reviewed in the United States on June 10, 2026 by The Dude
Size: 34,000 Grains
This is clearly a budget-priced unit, but the build quality is better than I expected. It feels solid, and after installation it softened the water exactly as it should. In my small home I didn't notice any drop in water pressure. I had a plumber install it, and he said the installation was completely straightforward. His opinion was that it's a good value for the money, though probably not something he'd choose over his preferred brands for every installation. Overall, if you're looking for an affordable whole-house softener and don't mind buying outside the major brands, this has been a solid performer so far.
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Reviewed in the United States on July 22, 2026 by Bob Dole
Size: 34,000 Grains
After installing this water softener, the difference in water quality became noticeable within the first few weeks. The water feels softer on the skin, soap rinses away more easily, and there has been less mineral buildup on faucets and shower fixtures. The digital display is easy to read and makes monitoring the system straightforward. I especially appreciate features like vacation mode, which helps reduce unnecessary regeneration when the house is unoccupied. The salt tank is also designed for easy access, making routine maintenance less of a hassle. The system runs quietly and has operated reliably so far. It appears well-suited for a medium-sized household, and the up-flow regeneration design is a nice touch for those looking to improve efficiency. Overall, this is a well-designed water softener that provides the convenience and benefits most homeowners expect from a whole-house system. What other customers should know: Water conditions vary by location, so results may differ depending on your home's hardness level. It's worth testing your water before and after installation to optimize the settings. Professional installation may be helpful if you're not familiar with plumbing connections, and keeping the salt level properly maintained is important for consistent performance.
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Reviewed in the United States on June 21, 2026 by pedro victor suriel