Water Softener and Whole House Carbon Filter System

$2,315.80 $3,195.95

SALE

(2)

Assembled in the USA

Lifetime Warranty

Certified Components

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1-Year Satisfaction Guarantee

Insured Fast Shipping

Best Price Guarantee

Expert Staff Support

Enjoy filtered water throughout your entire home that tastes better and makes your food taste better too

Showers and baths without chlorine & other disinfection by-products that can damage your skin and hair

Protect your home against hardness build-up 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

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.

Why use an RKIN water softener and conditioner

Prevent Hardness Build-up

Extend the life of your plumbing and household appliances by preventing scale build-up. Appliances that use water will last longer and run better. Why? Because water heaters, washing machines, and dishwashers using hard water can wear out 30% faster.

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

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

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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Salt-based water softener

Calcium and magnesiumSoftened waterBrine

Ion-exchange process removes calcium and magnesium, replacing with sodium.
High-quality, chlorine-resistant media bed for years of continuous service. Uniform bead size and distribution for optimum flow rates.
Softened water leaves the tank through the valve.
Metered water usage regenerates only when necessary, saving salt and water.
Brine from the brine tank rinses the captured minerals to the drain and recharges the media bed.

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Carbon Filter 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

Carbon Filter 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

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 RKIN Water Softener System (14 min).
Carbon filter and OnliSoft conditioner install, shown on the OnliSoft Pro combo (6 min).

How often does the RKIN salt-based water softener require salt replenishment?

RKIN CS series salt-based water softeners proactively monitor water usage and regenerate when needed. This "metered" approach ensures maximum efficiency for salt and water usage.

The exact regeneration schedule and salt replenishment requirement will depend on your water hardness and total household water use.

The water softener will regenerate at least once every seven days to keep the media within the system in a top-performing state.

What can I do with the mobile app?

Legacy View mobile app makes setting up and monitoring your RKIN Water Softener easier than ever. A free download of the phone app is available for your iPhone or Android device.

Conveniently view all valve settings and status
View estimated salt remaining(water softener only)
Easily change valve settings
View current water usage information
Graphically view water usage history
Start a regeneration or backwash cycle from your phone or tablet
Better understand the purpose of the settings and how your system is working

Do I have to use the mobile app?

No, the mobile app is not required. All the settings can be updated directly from the Water System's control board.

The mobile app does make the setup quick and easy.

The Bluetooth module on the valve can be disabled, and the mobile app can be deleted from the phone after the initial setup.

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

Whole House Combo Water System Models: CS9WS9 and CS10WS10

Salt-Based Water Softener Carbon Filter Combo Manual

RKIN Water Softener Manual

RKIN Water Softener Programming Guide

RKIN CS8, CS9, CS10 Carbon Filter Manual

RKIN CS13 Carbon Filter Manual

⚠ IMPORTANT: Before installation, the carbon 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 the RKIN customer service representative first.

If the water being filtered is from a public water supply, it will comply with requirements, and your RKIN Water Treatment System will substantially improve the water quality.

Whole House Carbon Filter and Water Softener Combo Water Systems
System	CS9 Carbon Filter	CS10 Carbon Filter	WS9 Water Softener	WS10 Water Softener
Bathrooms	1-3	4+	1-3	4+
Carbon Capacity / Grain	1 Million Gallons or 10 Years	1 Million Gallons or 10 Years	32K	48K
Pre-Filter Replacement	12 Months	9-12 Months	-	-
Tank Width	9”	10”	9”	10”
Tank Height with Head	52”	58”	57”	63”
Connection Size	1”	1”	1”	1”
Flow Rate	11 GPM Service	15 GPM Service	11 GPM Service	13 GPM Service

Salt-Based vs Salt-Free RKIN Water Softener Comparison
Water Softener	Salt-Based	Onlisoft Salt-Free
Salt replenishment is required	Yes	No
Drain is required	Yes	No
Electric outlet is required	Yes	No
Metered Operation for Water and Salt Efficiency	Yes	Not Applicable
Bluetooth and Mobile App	Yes	Not Applicable
Bluetooth can be disabled	Yes	Not Applicable
Acid or any other chemicals added	No	No
"Soft" feeling water	Yes	No
Hardness removed from the water	Yes	No, it’s neutralized via Seed Assisted Crystallization
Prevents hardness build-up	Yes	Yes

Operating Temperatures	Operating Pressure	pH Range
36°F-120°F	25-80 PSI	6.5-10

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. Sometimes shipping can take up to 5 business days, and some deliveries, including international orders, can take 7–14 business days. The whole home systems are usually shipped via UPS ground or Palletized Freight, depending on the water system type and your location.

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.

Water Softener and Whole House Carbon Filter System

$3,195.95 $2,315.80 Sale

Size

Enjoy filtered water throughout your entire home that tastes better and makes your food taste better too
Showers and baths without chlorine & other disinfection by-products that can damage your skin and hair
Protect your home against hardness build-up with a lifetime warranty on tanks & parts

View Full Details

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