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Hard Water Softener Cartridge

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Hard Water Softening Cartridge Kit

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SKU: 285743
Dimensions: 5 in × 5 in × 13 in
Weight: 5 lb

The Hard Water Softener Cartridge is ideal for “Point-Of-Use applications where soft water is needed because of excessive limescale build-up and you might not need or want a full size ion exchange salt based water softener. Some applications that this hard water filter is typically used for would include:       


  • Water Features
  • Any Point-Of-Use application where soft water is needed
  • Hot Water Dispensers
  • Vehicle Washing
  • Hot Water Pressure Washers
  • Food Trucks
  • Coffee Shops

This filter is only 10” tall by 4” in diameter making it very space friendly and easy to install in most applications. It is installed using ¾” fitting on both water in and water out. If you plan to use for vehicle washing, you will need to install garden hose bibs on both ends allowing you to hook it onto your water hose.

How It Works:

If you understand or are familiar with a typical salt based water softener (Ion Exchange), you know it uses a resin, usually called Zeolite, which has the ability to hold and attract hardness minerals using a sodium or potassium charge. Conventional water softeners regenerate and recharge the resin as needed washing the sodium brine and stored hardness minerals down the drain.

This Hard Water Filter Careridge uses the same Zeolite resin, but has a factory chloride charge and will usually last several months depending on water consumption. After the charge is depeleted, simply change the pre-charged cartridge. One major benift to using this Hard Water Softener Cartridge is that you can simply remove the exhausted cartridge and soak over night in a bucket of salt brine and re-install the following day eliminating on-going costs. You can purchase a spare Pre-Charged Cartridge HERE


  • 10" Tall
  • 5" Diameter
  • 1" female threads
  • Pressure relief button
  • Includes wall bracket and housing wrencs


Inexpensive To Maintain

Typically, in Point-Of-Use applications, water is not used continually like it is in a house-hold or residential application so the cartridge will last several months making this filter very economical to maintain. Another big benefit is you will not be wasting water, or purchasing salt but you get the benefit of having real soft water available. Our Hard Water Softener Cartridge can be a great solution to maintaining your expensive water dispensers and appliances.



Hard Water Cartridge Replacement Cartridge
image; Hard Water Cartridge Kit Replacement Cartridge

Why Buy a Sterling Water Conditioner?

No Salt is Needed:
Salt for an average household, costs $200 per year. Salt based water softeners are expensive, time consuming, and overall, VERY inconvenient.

Protects Your Investments:
The Sterling Water Conditioner not only stops scale from forming but usually removes existing scale... Read More

Filter Water Direct LLC

PO Box 194
Lakeview AR 72642

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Customer Feedback and Testimonials

I had the bullet installed last Wednesday. SO far SO GOOD. I have some calcium yet but it is 95% less. I assume it will get better since my water turned awful this winter and I blame it on the hard winter we had and all the snow. I have heard lots of complaints about the same from friends. Should my water return to what it was (but still hard) a few years ago, I may not have any hardness at all.... Read More