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Replacement 600,000 Gal. Whole House Salt-Free Water Conditioner

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  • Reduces impacts of well water on appliances and plumbing
  • No electricity, drainage, or back flushing needed
  • Low maintenance, easy to replace product lasts up to 6 years
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Product Overview

The replacement tank for the Aquasana Salt-Free Water Conditioner (EQ-AST-WH-R). Protect your home and plumbing from the adverse effects of scale buildup and extend the life of your washing machine, water heater, dishwasher and other appliances. Unlike salt-based conditioners, the Aquasana Whole House Salt-Free Water Conditioner won't demineralize your water by chemically removing minerals nor will it put excess salt or chemical waste into our environment. Aquasana uses advanced SCM salt-free technology to naturally and safely reduce scale buildup in hard water without the use of salt or chemicals.
  • Extends life of pipes and appliances by reducing harmful effects of scale buildup
  • Low maintenance - long lasting systems are easy to replace and last 6-years
  • Does not require electricity, drainage for wastewater, or complicated salt replacement
  • Replaces the EQ-AST-WH Aquasana whole house salt-free water conditioner

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From the Manufacturer

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Compare Similar Water Softener Systems

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Top RatedReplacement 600,000 Gal. Whole House Salt-Free Water Conditioner
New12 GPM Whole House Salt-Free Water Softener Filtration System in BlackPremium 10 GPM Whole House Salt-Free Water Softener System with Pre-FilterPremium 15 GPM Whole House Salt-Free Water Softener System with Pre-Filter with Protective Coat
BrandAquasanafiltersmartAPEC Water SystemsAPEC Water Systems
NameReplacement 600,000 Gal. Whole House Salt-Free Water Conditioner12 GPM Whole House Salt-Free Water Softener Filtration System in BlackPremium 10 GPM Whole House Salt-Free Water Softener System with Pre-FilterPremium 15 GPM Whole House Salt-Free Water Softener System with Pre-Filter with Protective Coat
House Hold Size5-6 people3-4 people1-2 people1-2 people
FeaturesNo additional features No additional featuresNo additional features
Application TypeWater TreatmentHousehold,Water TreatmentWater TreatmentWater Treatment
Salt TypeSalt FreeSalt FreeSalt FreeSalt Free
IncludesInstallation kitInstallation kitNo Additional Items IncludedNo Additional Items Included
Product Width (in.)99 in9 in10 in
Product Height (in.)4652 in48 in54 in
Product Weight (lb.)2940 lb60 lb50 lb
View ProductView ProductView ProductView Product



Product Depth (in.)
Product Height (in.)
Product Width (in.)
Tank Length (in.)
Tank Width (in.)


Application Type
Water Treatment
Color Family
No additional features
House Hold Size
5-6 people
Installation kit
Iron reduction (ppm)
Maximum Grain Capacity (grains)
Maximum hardness removal (grains per gallon)
Output between refills (gallons)
Pack Size
Product Weight (lb.)
Quantity (cu. ft.)
Regeneration time (min.)
Salt Storage Capacity (lbs.)
Salt Type
Salt Free
Service Flow Rate @ 15 psi drop (gallons per min.)
Water required for regeneration (gallons)

Warranty / Certifications

Manufacturer Warranty
90 day guarantee; 6 years

Questions & Answers

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Customer Reviews

  • 4.3
    out of 239 reviews
  • 85%recommend this product
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Showing 1-10 of 239 reviews
Salt-Free Water Conditioner
We Enjoy the Taste of Our Water The Hemet City Water Here Taste Nasty
    • Recommended
    A high quality product
    I installed it myself, though I have plumbing experience. I do not necessarily recommend this as you absolutely do not want any leaks. It was straightforward and took me about an hour to cut and spice into my existing water line. I had no issues, but I am very meticulous when it comes to plumbing. It has only been a month, so I cannot comment yet on the descaling effect of the "softener". My water comes from a deep artesean well and was already of high quality except for the minerals. I do like that it has not changed the "feel" of my water that you see with traditional salt softeners. It does seem that the "pre-filter" has reduced the amount of sediment I sometimes see in my water. I like that I can change this filter inexpensively more frequently when I need it. I have no complaints and am optimistic it will do exactly what I was hoping for. I also thought it was a good value given the longevity of the "softener".
    • Verified Purchase
    • Recommended
    Nice install
    The customer was very satisfied. Easy install and the water taste excellent.
      • Recommended
      Great tasting water!
      Installation was straight forward, but the instructions leave a lot to be desired, ie. all there is, is a picture of the completed install. Very few instructions. It would be helpful to show the plumbing "behind" the wall. That picture is far from a "normal" install. We flushed the tanks as directed, but after installing, there was still a significant amount of carbon coming out of the closest faucet. I also drained and flushed the water heater to make sure I had all the carbon out of that. Would have been nice to know that ahead of time, and run a bit of water into a bucket before completing the connection back into the house and contaminating all the lines. The water immediately tasted better (like bottled water). My wife and I both noticed softer water when showering, and she doesn't have to use fabric softener when washing bath towels. The dishwasher also works better, and less scaling on the glasses. I have noticed that there is almost no scale buildup on the faucets or shower heads. However, the scale that was on the shower head has not been cleared off after two months of use. Not a big deal, I can clean that to then insure scale buildup does not come back.
        • Recommended
        Super. The clean water is great!
        I am very happy to have filtered water, where I am not required to lift bags of salt. The installation was challenging hooking up to a well in a basement area to the upstairs location of th filtration system. The pre and post filters required extra time with wall extensions , as well as leveling out the two main tanks due to height differences with a small elevation " table". I still need to have my water tested, but visually it look so clean and odorless@
        Response from Customer ServiceMay 31, 2018
        Thank you for your review! We apologize for the extra work incurred due to the tank height difference. The tanks are designed to be the same height, but it appears that the salt-free softener you received is the one that matches our shorter, city water systems. We have sent you a separate email to resolve the issue.
        • Verified Purchase
        • Recommended
        What a difference Aquasana makes.
        I had everything installed by a professional plumbing company and they did a good job. Where the water softener loop was located the wall space was small, but the Aquasana fit nicely. After running water for a few minutes, the nasty taste of city water was gone. The water smells better and coffee certainly tastes better. This is the perfect system for us.
        Response from Customer ServiceMay 31, 2018
        We're so glad you're enjoying your whole house system! From the looks of it, that was a great plumbing company choice!
        • Verified Purchase
        • Recommended
        Aquasana EQ-AST-WH Home Water Filter-Softener
        I've just finished installing the Aquasana EQ-AST-WH whole home water softener system. It works well, however, I've not yet done any water testing.
        • Verified Purchase
        • Recommended
        Our water is now awesome!
        I've had the Aquasana one million gallon and water softener installed for about a month now. Our water no longer smells like fish and no more calcification on our shower heads etc. I had a plumber install it and I'm really glad I did. I could have done it, but I know it is installed correctly with the plumber doing it. Great product!
        • Verified Purchase
        • Recommended
        compact and easy to install
        I purchased this a month ago it came with everything I needed to install, also installed a bypass incase you need to service the equipment..
        • Verified Purchase
        • Recommended
        Big time disappointed with this system! I bought this to help with my hard water and the terrible...
        Big time disappointed with this system! I bought this to help with my hard water and the terrible chlorine taste with our water. I'm not sure it did anything to fix my hardness, but what is worse is that it claims to remove 97% chlorine when in fact it does not. It clearly says right on the picture "chlorine removal" but when I contacted the company after the smell remained for weeks they said it does not and that I have to buy an entire other system to remove it. My pregnant wife has been drinking this water thinking it was free of chemicals and it's not. What a sham!!! We will be returning it. Buyer beware!
        Response from THD-CSMay 18, 2017
        “Dear Valued Home Depot Customer, If you look at the specifications for this item, you will see that this system is designed to be used only as a water softener and not as a filtration system. If you are looking for a complete system, then I would point you towards the THD-600-BUNDLE that you can find here:
          2 found this review helpful
          Showing 1-10 of 239 reviews