SimplySoft Salt-Free Water Softener Replacement

This is the replacement cartridge for the 6 month SLOW PHOS salt-free softener (EQ-SS20). Does not replace the 2 year SCM or NAC salt-free softeners for tankless water heaters.

SimplySoft Salt-Free Water Softener Replacement is rated 4.1 out of 5 by 41.
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  • MSRP: 99.99

Save 15% + free shipping with Water for Life $84.99

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Aquasana SimplySoft is better than just a softener. It won't demineralize your water by chemically removing minerals from your water nor will it put excess salt waste into our environment.

Gently and naturally conditions water using innovative salt-free water softening SLOW PHOS technology designed to prevent scale formation and protect from corrosion.

Easy replacement of water softener cartridges without the need for a plumber. Cartridges need to be replaced every six months or 50,000 gallons.

If you are looking for the replacement cartridge for the EQ-AS20 2 year SCM or NAC salt-free softeners for tankless water heaters, please click here.

If you are looking for the replacement tank for the EQ-AST-WH 6 year SCM or NAC salt-free whole house softeners, please click here.

SLOW PHOS Salt-Free Water Softening Technology

More than just a softener, Aquasana SimplySoft uses innovative SLOW PHOS salt-free water softening technology to naturally condition your water and protect your pipes from corrosion without the use of added sodium. As its name implies, SLOW PHOS uses food grade polyphosphate beads engineered to dissolve at a controlled (or "slow") concentration to effectively target scale producing hard mineral carbonate crystals including calcium, magnesium, and barium (Ca, Mg, and Ba). SLOW PHOS technology works by altering the ionic charge of these carbonate crystals to reduce their attraction to one another in your water. By altering their ionic charge, hard minerals will no longer clump or pack together and create scale (Ca, Mg, and Ba buildup). In addition, SLOW PHOS phosphates act as a protective barrier in your plumbing to protect from pipe corrosion. Unlike salt-based water softeners, Aquasana SimplySoft SLOW PHOS technology will not demineralize your water nor will it negatively affect the environment by adding excessive amounts of sodium into our communal water system.

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Read the Reviews

Rated 5 out of 5 by from Aquasana soft water filter Performs very well and endures in service for the full length of time allotted in design. We are pleased to have soft water in a very hard-water environment.
Date published: 2017-09-21
Rated 5 out of 5 by from WORKS GREAT I HAVE VERY HARD WATER OUT OF WELL. THIS FILTER DOES WHAT THEY SAY. WHEN IT TIME TO REPLACE AND PUT A NEW FILTER ON, YOU CAN REALLY TELL DIFFERENCE.
Date published: 2017-06-20
Rated 5 out of 5 by from WORKS GREAT I HAVE VERY HARD WATER OUT OF WELL. THIS FILTER DOES WHAT THEY SAY. WHEN IT TIME TO REPLACE AND PUT A NEW FILTER ON, YOU CAN REALLY TELL DIFFERENCE.
Date published: 2017-06-20
Rated 5 out of 5 by from Great choice This is so much easier to change then adding salt every few weeks . One filter every 6 months --- EASY !!!!
Date published: 2017-05-11
Rated 5 out of 5 by from Great choice This is so much easier to change then adding salt every few weeks . One filter every 6 months --- EASY !!!!
Date published: 2017-05-11
Rated 5 out of 5 by from It works. No additional comments
Date published: 2017-03-15
Rated 5 out of 5 by from Great Salt-Free Water Softener This salt-free water softener provides a very effective solution to hard water provided by city or community well providers. The results are truly outstanding. The product is easily installed and negates the need for the addition of salt products on a regular basis. It works very well and lasts at least a year.
Date published: 2016-11-22
Rated 5 out of 5 by from Great Salt-Free Water Softener This salt-free water softener provides a very effective solution to hard water provided by city or community well providers. The results are truly outstanding. The product is easily installed and negates the need for the addition of salt products on a regular basis. It works very well and lasts at least a year.
Date published: 2016-11-22
Rated 5 out of 5 by from Used for 3 years and are very happy We have had the whole house filter system in 2 houses. Second house has softener system and we are very pleased.
Date published: 2016-11-03
Rated 5 out of 5 by from Used for 3 years and are very happy We have had the whole house filter system in 2 houses. Second house has softener system and we are very pleased.
Date published: 2016-11-03
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User Q & A

What is the process of replacement for the water softner system? How many do you need to buy a year, etc? Other costs??

Asked by: Laurel
Hello, this small simplysoft cartridge is housed in the same canister that a 20 inch pre filter would be kept in. You simply release the pressure form your system, unscrew the canister and replace the cartridge. Each cartridges is good for 6-12 months depending on your water quality and usage. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-06-15

I have a EQ -400 whole house system. Please tell me what kind of softener I need to buy to replace the old one that I have been using more than a year. Thank you.

Asked by: Blue Bird

can i use the replacement filter in any 20" housing ? or is the filter special made for just this one ?

Asked by: 552 mark

What is the gallons per minute flow rate?

Asked by: Jeannie

if there is still material in the cartridge when pull it to replace should I reinstall and continue using it until all the material hs bee used? The cartridge I just removed has 15 or 20% left Thanks 

Asked by: zeke
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