RKIN CBS OnliSoft Salt-Free Water Conditioner Whole House Water Treatment System
Trusted by 27+ Customers ★★★★★ ★★★★★ 4.6 out of 5

RKIN CBS OnliSoft Salt-Free Water Conditioner Whole House Water Treatment System

RKIN SKU: RKIN-CBS-OPX20

Stops hard-water scale throughout the home without salt.

Price
Regular price $1,35859
Regular price $1,77815 Sale price $1,35859
Save $419.56
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  • In stock, ready to ship
  • Backordered, shipping soon
Shipping, Returns, & Warranties

Orders Processing: We offer fast and reliable shipping across the continental U.S., with free shipping available on orders over $200 (exclusions may apply based on brand and product type). Orders are typically processed within 1–2 business days and transit time is 4–8 business days. Larger items may ship via freight and require a scheduled curbside delivery. Please ensure your contact details are accurate at checkout. For questions about delivery timelines, shipping eligibility, or special requests, feel free to contact us directly.

Order Confirmation: As soon as you place your order, you will receive an order confirmation e-mail.  This means that we have received your order in our system.

30 Day Returns: If your order arrives damaged, we will exchange you a replacement. Our return policy cover from the date of purchase. To be eligible, items must be unused, in their original packaging, and accompanied by proof of purchase. Defective products are eligible for free returns, with options for a refund or replacement. Customer remorse returns may incur return shipping fees and restocking fees. Refunds are processed within a specified timeframe, subject to restocking fees if applicable. Late or missing refunds should be addressed with your bank or credit card company first. Exchanges may be accepted for defective or damaged items. Shipping costs for returns are typically the responsibility of the customer, except in cases of damaged products. For more details, visit our Refund Policy Page.

View our Full Brand Warranty Page Here

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Verified Customer Reviews

4.8 out of 5 from 5 product reviews

Fantastic system, easy install, great water

The installation was straightforward and pretty easy.

Bruce B. August 20, 2022

RKIN whole-home treatment

A more considered approach to water at every tap.

Product details

Transforms ordinary tap water into filtered, healthy spring-like water throughout your entire home:

  • Filters sediment, chlorine, and other disinfection by-products.
  • Protects appliances and plumbing from harmful hardness build-up.
  • Large Capacity 4.5" x 20" Filter Cartridges.
  • Filter Housing with Patented Microban Technology.
  • Compact, space-saving design.
  • Certified components.
  • Perfect for homes with 1 - 2 full-time residents.
  • Lifetime Warranty on Tanks and Parts*.
  • Free Shipping within the continental US.
  • US-based Technical Support.
  • Detailed, easy-to-follow, step-by-step instructions for installation and filter replacements.

Filters Out Harmful Contaminants

Remove up to 99.6% of chlorine and other contaminants with our whole house water filter system. It has multiple lines of defense against harmful chemicals and pollutants, including:

Taste, Odor, Chlorine, Chloramine, Haloacetic Acids, MTBE & THM's, Herbicides, Pesticides, and many others.

Softer Skin & Healthier Hair

Eliminate contaminants in the water that can be harmful to your body. By filtering chemicals such as chlorine and chloramine, you can avoid the drying effects of chemicals, promoting softer skin and healthier hair.

Why Use a Water Softener

The mineral build-up, or scale, can occur in plumbing and household appliances when your water is hard. Solid deposits of calcium carbonate can form when hard water is heated. This scale can reduce the life of appliances, raise the cost of heating your water and clog pipes. Long-term movement of hard water through a pipe results in scale buildup. This can gradually close up the pipe and lower your water pressure.

Prevent & Reverse Hardness Build-up

Extend the life of your plumbing and household appliances by preventing and reversing scale build-up. OnliSoft Salt-Free water treatment system naturally neutralizes hardness minerals into inactive microscopic crystal particles without salt or any other harsh chemicals.

Zee Pro Sediment Filter

Designed to filter out sand, silt, clay, and any other sediment.

This 5-micron sediment filter is the largest size available for maximum flow rates and longevity. It's 20 inches high and 4.5 inches wide.

High-Quality Filter Housing with Bacteriostatic Technology will provide years of pain-free filter replacements.

Certified Carbon Cartridge

Activated carbon block filters for chlorine, chloramine, PFAS, taste, and odor reduction.

Excellent chemical contaminant reduction, high adsorptive capacity, and efficiency.

Onlisoft Salt-Free Water Softener

OnliSoft is a maintenance-free filtration media designed to prevent scale build-up by transforming hardness molecules into harmless minerals that no longer cling to household and appliance plumbing surfaces. This is accomplished without adding anything to the water, such as salt, acids, or any other chemicals.

How it works: The OnliSoft media naturally neutralizes hardness minerals through Seed Assisted Crystallization. This process of capturing, accumulating, and transforming the hardness minerals into inactive microscopic crystal particles occurs without introducing additional substances. These deactivated particles that are suspended in the water pass through and ultimately exit the entire household plumbing system.

The OnliSoft media is non-absorbent. It will work for a lifetime and doesn't require replacements or maintenance.

Whats in the box



Dual ZEE Pro Housing


Two Carbon Cartridges


Sediment Filter Wrench


ZEE Pro Mounting Kit


Installation and Product Manual


Dual ZEE Pro Housing


ZEE Pro Sediment Filter


OnliSoft Anti-Scale Cartridge


Sediment Filter Wrench


ZEE Pro Mounting Kit


Installation and Product Manual

RKIN OnliSoft Pro Saltless Water Softener Carbon Filter Combo is featured in the videos below. The Well Water Filter and/or Salt Based Water Softener installation will be very similar, with additional drain and electrical outlet required.
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