Advanced Salt-Free Water Conditioner and Well Water Filter Combo

$4,271.95 $5,261.11

SALE

Assembled in the USA

Lifetime Warranty

Certified Components

Not sure which size fits your home?Free 30-min consult with a water specialist

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1-Year Satisfaction Guarantee

Insured Fast Shipping

Best Price Guarantee

Expert Staff Support

Protect your appliances and extend their lifespan, safeguard against harmful hardness build-up

Showers and baths without iron, sulfur, or manganese that can damage your skin and hair

Defend your home against hardness build-up, iron stains, & sulfur “rotten egg” odor with a lifetime warranty on tanks & parts

Super Flex Installation Kit for Dual Tank Whole House Water Treatment System

$198.99 $169.95

Flash Undersink Reverse Osmosis System with Chrome Lead-Free Faucet

$499.95 $329.45

Stainless Steel High Output UV Water Disinfection System

$930.38

Stop scale, smells, and stains - talk to a water pro and get your best‑fit system.

In 30 minutes, an RKIN Whole Home specialist will review your water, compare options, and give you a clear recommendation with pricing and installation options - zero pressure, no obligation.

What You Get:

Clarity
Exact model, estimated costs, DIY vs. pro install guidance.
Diagnosis
City or well - identify the real cause (scale, iron, sulfur, chlorine).
Confidence
Straight answers on maintenance, warranties, and timelines.

Schedule my 30‑min consultation

Prefer to talk now? Call 1‑800‑803‑4551 (Mon–Fri, 9 AM–5 PM EST)

RKIN free whole house water system consultation

RKIN Water Systems As seen on AMC's NewsWatch TV

Filter Out Iron, Sulfur, and Manganese

Does your water smell like rotten eggs? Do your sinks & toilets have orange staining? You and your family deserve the best quality water and expect that it be delivered at each faucet whenever needed.

RKIN Filter System is the answer to your problem with water to reduce Iron, Sulfur, and Manganese.

Softer Skin & Healthier Hair

Eliminate contaminants in the water that can be harmful to your body. By filtering out iron, sulfur, and manganese, you can avoid the negative effects of these elements, 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.

Why use an RKIN water softener and conditioner

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.

Independent laboratory testing

Test once and ensure you are purchasing the proper water system for your home.

A water test by a certified independent laboratory will help you determine exactly which water issues are present and identify the proper equipment needed to treat them. For most people, on well water Metals and Minerals test is sufficient. If you notice yellow coloration of water or staining, a tannins test is also required.

Access easy sampling, certified laboratories, and unbiased expert advice with SimpleLab. It's advanced water testing made easy. Our easy-to-read, professional water report provides a complete picture of your water quality.

We will even credit the water test cost towards your combo well water system purchase!

Learn more

OnliSoft Tank
ZEE Pro Filter Housing
ZEE Pro Sediment Filter
Sediment Filter Wrench
Bypass Valve
Two 1" MNPT PVC Elbow Fittings
Hose Bib Assembly
ZEE Pro Mounting Kit
Installation and Product Manual

OnliSoft Tank
ZEE Pro Filter Housing
ZEE Pro Sediment Filter
Sediment Filter Wrench
Bypass Valve
Two 1" MNPT PVC Elbow Fittings
Hose Bib Assembly
ZEE Pro Mounting Kit
Installation and Product Manual

Well water filter

Iron, sulfur, manganeseOxidizedFiltered water

Water enters the top of the tank.
As water passes through the air pocket, iron, sulfur, and manganese are oxidized. Additionally, dissolved oxygen is added to the water.
Media for efficient reduction of iron, manganese, & sulfur. The media bed removes the oxidized contaminants from the water.
Filtered water rises through the center tube and leaves through the valve.
Bluetooth Enabled Smart Control Valve: Water use is monitored for peak efficiency. Built-in backup of settings during power outages. 12V DC operation plugs into a regular 120V outlet with an AC adapter. Mobile app for easy setup and monitoring. The control valve slowly releases compressed air charge prior to backwash cycle … Enpress® Vortech. Innovatively designed to provide increased backwash efficiency using less water, and saving money.

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Whole house carbon filter

Chlorine and chemicalsHeavy metalsSedimentFiltered water

Water travels down the center tube and rises through the media.
Designed to remove organic contaminants and disinfectant by-products such as chlorine and chloramines.
Creates a bacteriostatic environment using copper and zinc alloy which helps with the removal of chlorine and heavy metals.
Innovatively designed to maximize water treatment by substantially increasing contact time with the water filtration media.
Designed to filter out sand, silt, clay, and any other sediment.

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OnliSoft salt-free conditioner

Calcium and magnesiumInactive crystals

Hard water flows down the center tube and up through the OnliSoft media.
The OnliSoft media naturally neutralizes hardness minerals through Seed Assisted Crystallization.
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. The Zee Pro sediment filter is still replaced on schedule.

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Well Water Filter
Bypass Valve
AC Adapter
Two 1" MNPT Elbow Fittings
15 ft Drain Line Hose
Installation and Product Manual

Well Water Filter
Bypass Valve
AC Adapter
Two 1" MNPT Elbow Fittings
15 ft Drain Line Hose
Installation and Product Manual

Carbon Filter Tank
Two 1" MNPT PVC Elbow Fittings
Bypass Valve
Spindown Filter
Installation and Product Manual

Carbon Filter Tank
Two 1" MNPT PVC Elbow Fittings
Bypass Valve
Spindown Filter
Installation and Product Manual

Super Flex Installation Kit for Dual Tank Whole House Water Treatment System

$198.99 $169.95

Optional RKIN Super Flex Kit makes installation faster and easier. Eliminates the need to perfectly measure, cut, and glue pipes. Just place the water system next to the main water line and connect...

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Step-by-step DIY install of the Self-Rinsing Spin Down Sediment Filter (7 min).
Step-by-step DIY install of the RKIN Well Water Filter System (34 min).
Carbon filter and OnliSoft conditioner install, shown on the OnliSoft Pro combo (6 min).

Does the RKIN OnliSoft Whole House Water Conditioning System add anything to the water?

No, it doesn't. The OnliSoft Whole House Water System neutralizes hardness via Seed Assisted Crystallization and protects your appliances from hardness build-up.

What is OnliSoft?

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 and will work for a lifetime. This means that there are no replacements or maintenance required.

Does the RKIN OnliSoft Whole House Water Conditioning System require any maintenance?

The OnliSoft Whole House Water Conditioning System requires no maintenance and is a great money saver. It needs no electricity to operate and produces zero water waste. And since our water treatment system is salt-free, it doesn't require the yearly maintenance hassle and cost that is involved with standard salt softeners.

ZEE Pro Sediment Pre-filter will require replacement. Please below.

Who installs my RKIN Water System?

RKIN ships direct from the factory, saving you over 60% of the standard retail cost. Our products' user-friendly design makes installation easy with or without professional help. However, if you're not mechanically inclined, we do recommend hiring a plumber to help with installation.

Learn more about RKIN installation services, currently only available in southwest Florida.

When I move, can I take my RKIN Water System with me?

The RKIN easy-install design makes moving the system between houses a breeze. Just put the system into bypass mode, disconnect it, and take the system with you. The system can be re-installed in your new home with or without professional help.

Do you have a technical service help desk?

Yes, RKIN's technical support staff is available by phone at 1-800-803-4551, via the contact form, and through live chat, Monday to Friday from 9 am to 5 pm EST. You can also reach us at any time by e-mail with any questions or concerns. Product-specific technical information is also available on each product page, which includes Installation Guides, Product FAQ, and Specifications.

Why should I get my water filter system from you?

RKIN specializes in well-built, user-friendly filtration systems made in Florida. Backed by guarantees that go above and beyond industry standards, each of our products comes with an industry-leading lifetime warranty and an unmatched one-year satisfaction guarantee.

Another factor that separates us from the competitors is our renowned customer service. Conveniently placed in Fort Myers, FL, our home office allows us to provide our customers with reliable and easily accessible help if needed.

How long will it take for me to receive my order?

We provide tracking numbers for all orders via email. All orders usually ship on the same or the next business day. But, sometimes, it might take us up to 5 business days to ship your order. Depending on where you are located, the product may take up to 5 business days to be delivered to your home. The whole home systems are usually shipped via UPS ground or Palletized Freight depending on the water system type and your location.

What if I have more questions or need support?

Contact customer support.

RKIN 20" 5 Micron PP Sediment Filter for Whole House Water Filtration

$38.28 Buy Now

O-Ring Kit for ZEE PRO Filter Housing

$9.95 Buy Now

Replacement Carbon Media

From $169.95 Buy Now

Specs

Advanced Whole House Combo Water System Models: WF10OS8CS9DR, WF13OS9CS10DR

RKIN Well Water Filter Manual

RKIN Well Water Filter Programming Guide

Onlisoft Pro Salt-Free Whole House Water Treatment System Manual

RKIN CS8, CS9, CS10 Carbon Filter Manual

RKIN CS13 Carbon Filter Manual

⚠ IMPORTANT: Before installation, the OnliSoft media inside the tank needs to be soaked in water for a MINIMUM of 2 days.

⚠ CAUTION: Do not install on well water without checking with RKIN customer service representative first.

Well Water Filter RKIN Water System Models
Well Filter	WF10	WF13
Bathrooms	1-3	4+
Tank Width	10"	13"
Tank Height With Head	64"	64"
Connection Size	1"	1"
Flow Rate	12 GPM	20 GPM

Whole House Carbon Filter RKIN Carbon Filter Models
System	CS9	CS10
Bathrooms	2-5	4-6
Carbon Media Capacity	1 Million Gallons Or 10 Years	1 Million Gallons Or 10 Years
Pre-Filter Replacement	Every 12 Months	Every 9-12 Months
Tank Width	9"	10"
Tank Height With Head	52"	58"
Connection Size	1"	1"
Flow Rate	11 GPM Service / 17 GPM Peak	15 GPM Service / 23 GPM Peak

Salt-Free Conditioner RKIN Saltless System Models
Water Conditioner	OS8: 1-3 Bathrooms	OS9: 2-5 Bathrooms
Zee Pro Pre-Filter Replacement	Every 12 Months	Every 12 Months
Tank Width	8"	9"
Tank Height With Head	48"	52"
Connection Size	1"	1"
Flow Rate	9 GPM Service / 12 GPM Peak	11 GPM Service / 17 GPM Peak

Shipping & Delivery

Free standard shipping within the contiguous United States (lower 48 states).

Orders are usually shipped the same or the next business day and delivered within 2–5 business days. Some deliveries, including international orders, can take 7–14 business days. Subject to in-region item availability and seasonal carrier shipping performance.

Order tracking numbers are emailed as soon as they become available. If you do not receive your tracking number within 24 business hours, please check your spam folder.

Price Match Guarantee

We work diligently to make sure that we offer the best prices for our products online. If you come across another retailer offering a lower price for our products than we are within 12 months of your purchase date, please let us know, and we will refund you the difference in price.

We want you to feel confident that you are getting the absolute best price for the product you are ordering from us. If you find that our own website, www.rkin.com, has lowered the price for the same item you ordered within 12 months of your purchase date, please let us know, and we will refund the difference in price.

Warranty & Returns

You get an unconditional one-year satisfaction guarantee with every RKIN whole-house water treatment system.

Lifetime Warranty included on Tanks and Parts. Free shipping on warranty replacements.

The Electronic and Mechanical Control Valves are warrantied for 7 years.

Advanced Salt-Free Water Conditioner and Well Water Filter Combo

$5,261.11 $4,271.95 Sale

Size

Protect your appliances and extend their lifespan, safeguard against harmful hardness build-up
Showers and baths without iron, sulfur, or manganese that can damage your skin and hair
Defend your home against hardness build-up, iron stains, & sulfur “rotten egg” odor with a lifetime warranty on tanks & parts

View Full Details

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Not Sure Which Whole‑Home System?

Get a custom plan in 30 minutes. Talk to an RKIN water specialist—zero pressure. We’ll assess your water, compare options, and give you a clear recommendation with pricing and install fit.