RKIN Whole House Carbon Water Filter System
RKIN Whole House Carbon Water Filter System
RKIN Whole House Carbon Water Filter System
RKIN Whole House Carbon Water Filter System
RKIN Whole House Carbon Water Filter System
RKIN Whole House Carbon Water Filter System
RKIN Whole House Carbon Water Filter System
RKIN Whole House Carbon Water Filter System
RKIN Whole House Carbon Water Filter System
RKIN Whole House Carbon Water Filter System

RKIN Whole House Carbon Water Filter System

RKIN SKU: RKIN-CS8
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Regular price $93838
Regular price $1,89180 Sale price $93838
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Product guide

RKIN Whole House Carbon Water Filter System

Review product details, specifications, installation information and available resources in clearly organized sections.

RKIN Whole House Carbon Water Filter System

Improve water quality throughout your home with the RKIN Whole House Carbon Water Filter System. Featuring multi-stage KDF media, catalytic activated coconut shell carbon, and a 5-micron sediment prefilter, this whole house filtration system helps reduce sediment, chlorine, chloramine, taste, odor, and other common municipal water contaminants before they reach every faucet.

Features & Benefits

  • Whole House Water Filtration – Treats water at the point of entry to provide cleaner water throughout your home.

  • Multi-Stage Carbon Filtration – Combines KDF media, catalytic activated coconut shell carbon, and an EvenFlow media bed for enhanced contaminant reduction.

  • High Chlorine Reduction – Removes up to 99.6% of chlorine while helping reduce chloramine, taste, odor, and common disinfection by-products.

  • 5-Micron Sediment Prefilter – Captures sand, silt, rust, and other suspended particles before they reach the carbon media.

  • Premium KDF Media – Copper-zinc media helps reduce chlorine and certain heavy metals while creating a bacteriostatic environment within the filter.

  • Catalytic Coconut Shell Carbon – Designed to reduce chlorine, chloramine, organic compounds, and common chemical contaminants.

  • EvenFlow Technology – Maximizes contact time between water and filtration media for more consistent filtration performance.

  • Certified Components – Built with high-quality certified components for dependable long-term operation.

  • Lifetime Warranty on Tanks & Parts* – Backed by RKIN's limited lifetime warranty.

Helps Reduce

  • Sediment

  • Chlorine

  • Chloramine

  • Taste & Odor

  • Haloacetic Acids (HAAs)

  • Trihalomethanes (THMs)

  • MTBE

  • Herbicides

  • Pesticides

  • Certain Heavy Metals

Perfect For

Municipal water supplies
Chlorine & chloramine reduction
Sediment filtration
Improving drinking water throughout the home
Protecting plumbing and appliances
Homes with hard water when paired with a softener

Make it a combo with salt-free or salt-based water softener

Why Use a Water Conditioner

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.

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.

Better Tasting Food & Water

With a whole house water treatment system, you can savor the purity in the kitchen. Filtered water enhances not only the water that you drink but also the quality of the food that you eat. Upgrade your cooking by using cleaner and healthier filtered water.

Multi-Stage Carbon Filter

Stage 1 - KDF Media. Creates a bacteriostatic environment using copper and zinc alloy which helps with the removal of chlorine and heavy metals.

Stage 2 - Catalytic Activated Coconut Shell Carbon Bed. Designed to remove organic contaminants and disinfectant by-products such as chlorine and chloramines.

Stage 3 - EvenFlow Bed. Innovatively designed to maximize water treatment by substantially increasing contact time with the water filtration media.

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.

What's in the box?

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

Installation videos

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.

Model specifications

Model Bathrooms Carbon media capacity Prefilter replacement Tank size Connection Flow rate
CS8 1 to 3 500,000 gallons or 10 years Every 12 months 8 by 48 inches 1 inch 9 GPM service, 12 GPM peak
CS9 2 to 5 1 million gallons or 10 years Every 12 months 9 by 52 inches 1 inch 11 GPM service, 17 GPM peak
CS10 4 to 6 1 million gallons or 10 years Every 9 to 12 months 10 by 58 inches 1 inch 15 GPM service, 23 GPM peak
CS13 7 or more 1 million gallons or 10 years Every 6 to 9 months 13 by 58 inches 1.5 inches 28 GPM service, 41 GPM peak

Operating range: 36°F to 120°F, 25 to 80 PSI, pH 6 to 11.

RKIN CS8, CS9, CS10 and CS13 manualProduct specifications, parts, installation, soak and rinse instructions, maintenance and troubleshooting
Shipping, Returns, & Warranties

Orders Processing: Our chosen couriers, including USPS, UPS, and FedEx, consistently facilitate the delivery of your items from our warehouse. Please note that processing times may vary depending on the brand. All orders are processed and shipped within 1 - 5 business days.

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 and pre-authorized your card for the purchase.

30 Day Returns: If your order arrives damaged, we will exchange you a replacement. For more details, visit our Refund Policy Page.

View our Full Brand Warranty Page Here
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