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Salt-Free Softener

Model Number: SF-600

The Kind Water SF-600 is a high-performance salt-free softening system designed to reduce scale and protect your plumbing, fixtures, and appliances without salt, brine, or routine maintenance. Its advanced conditioning media transforms hardness minerals into harmless crystals that do not stick to surfaces, helping preserve water flow, extend appliance life, and reduce buildup on shower doors, faucets, and water heaters.

Engineered with NSF® certified components, the SF-600 delivers reliable, low-maintenance performance for homes looking for a clean, environmentally friendly alternative to traditional salt-based softening.

Want added protection against bacteria and viruses? Consider the Kind SF-600UV which includes all these benefits plus powerful UV disinfection.

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Add ons:

Add UV Purification System

Sterilizes 99.9% of bacteria and viruses

~~$1,298.00~~

$1,190.00

120 Day Satisfaction Guaranteed

Same Day Shipping

Lifetime Warranty

View full details

How It Works: 2 Stages of Protection

2 Stages of Protection

The SF-600 Salt-Free Softener provides the Ultimate Protection for your well water by combining our Most Advanced Smart Legacy View Metered Technology.

95%

of sediment filtered

88%

scale prevention

Stage 1

Sediment Filter

Captures fine dirt, sand, rust, and debris—blocking up to 95% of particulates in your water

Stage 2

ESOFT® salt-free softener

Protects appliances and plumbing by preventing and reducing existing scale - no salt, no wastewater, no electricity.

Stage 1

Sediment Filter

Filters dirt, sand, rust and debris from entering your home

5-micron pleated design traps up to 95% of particulates

Oversized 20” filter ensures maximum capacity and maintains  strong flow (15 GPM)

Eco-friendly: Washable and reusable. Manufactured using  FDA approved materials

Replace every 6-12 months for best performance

Made in the USA

Why it matters:

Effectively captures dirt, sand, rust, and debris to deliver cleaner water as it moves to the next stage of carbon filtration.

5-Micron Pleated Sediment Filter

95% of Particles Filtered

Designed to eliminate 95% of visible particulate matter and particles of dirt, sand, silt, clay, rust, and other debris, an essential first step that ensures clean, clear water reaches the next stage and extends the life of the carbon filter.

Strong 15 GPM (Gallons Per Minute) Flow

Our five layer 20” pleated sediment filter is twice the size of standard filters, delivering double the filtering capacity and filter life, with a pleated design that maintains high flow and minimal pressure drop. 5-micron filters down to 14 times smaller than a human hair.

Washable and Reusable

Made from durable polypropylene, this sediment filter can be washed and reused multiple times if you live in an area with heavy sediment.

Stage 2

ESOFT® Salt-Free Softening

Salt-free softener protects appliances and plumbing without salt and chemicals.

TAC (Template Assisted Crystallization) transforms minerals such as calcium and magnesium into harmless crystals (88% scale prevention)

No slimy feel of salt systems, no scale on fixtures or appliances. Keep minerals intact.

Zero maintenance, no heavy salt bags. No wastewater or brine discharge.

NSF/ ANSI - 61 (drinking water safety), 372 (lead free) certifications.

Made in the USA.

Why it matters:

Protects your plumbing from hard water scale while improving your appliance lifespan with zero maintenance, chemicals, salt or electricity.

ESOFT® Salt-Free Softener

Prevents Scale Build up

ESOFT® Salt-Free Technology uses a physical alteration process called Template Assisted Crystallization (TAC) to prevent hard water buildup. It converts 88%+ of scale-causing minerals like calcium and magnesium into tiny, harmless crystals that won’t stick to pipes or appliances, protecting your home without using salt or phosphates.

Removes Existing Scale

This salt-free water softener alternative not only prevents future scale buildup in plumbing but also helps descale existing hard water scale, a key advantage over traditional salt-based softeners, which only prevent new scale.

Zero Salt. No Maintenance.

An environmentally friendly and maintenance-free solution with no water waste, no electricity, no slippery feel, and no heavy and costly salt bags - ideal for people with health issues such as low sodium intake requirement.

Eco-Friendly, Zero Waste

Unlike conventional systems that chemically remove minerals, the eSoft system retains beneficial minerals and preserves your water’s natural hardness and optimal pH, though minor evaporative deposits may still occur. There is no waste water or brine discharge which has caused salt-based systems to be banned in several states.

The Benefits of Whole House Salt-Based Water Softening

Protects Every Appliance
- Prevents hard water scale in pipes, heaters, dishwashers
- Extends appliance lifespan
- Improves water heater efficiency
Zero Waste. Eco-Friendly
- Salt-free and chemical-free
- No wastewater or brine discharge
- Reduces plastic bottle use good for your wallet and the planet

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53″H x 24″W x 15″D

Max Flow Rate

Up to 12 GPM (Gallons Per Minute).
Run up to 5 showers and appliances (such as dishwashers or washers) concurrently with no noticeable drop in water pressure.

Certification

NSF/ ANSI - 61 (Drinking Water Safety),  372 (Lead Free) Certifications.

Home Size

For homes up to 5+ full bathrooms.
Works for 98% of US homes.

Hardness

Max Hardness: 1282 PPM or 75 GPG.

Plumbing

1” MNPT for system connections.
The system integrates easily into most residential plumbing setups.
Bypass valves recommended.

Filter + Softener Specifications

Operating Pressure: 25 to 120 psi

Operating Temp: 39 to 113 F

PH Range: 6.5 to 9.5

Max Iron: 0 mg/L

Max Hydrogen Sulfide: 0 mg/L

Max Manganese: 0 mg/L

System Manual

Kind Water Systems are designed for quick, no-hassle installation. Set it up yourself with basic tools or have your plumber of choice install it quickly.

Installation Manual

Detailed system installation manual with step by step instructions.

Salt-Free Softener Manual

Installation Video

Easy to follow guided instructions by our expert team.

Replacement Instructions

Changing filters is quick and tool-free. Just twist off the housing, swap the cartridge, and twist it back on, done in minutes. No need for a technician.

Maintenance Instructions

Quick and easy filter replacement instructions

Download Instructions

Get your Replacement Filters

Maintenance Video

Detailed video on how to replace your filters

Kind Water vs. The Other Guys

Kind Water

Other Systems

Manufacturing

High quality materials - 120 day guarantee and lifetime warranty

Made in US and Italy

Made in China

Salt-Free Softening

Reduces scale buildup without using salt or chemicals.

DIY-Friendly Install:

Designed for simple installation without professional help.

Easy Maintenance:

Minimal upkeep with quick filter changes.

Quick and Easy (10 mins DIY)

Requires a plumber

Certified Components:

Built with parts tested and certified for safety and performance.

NSF/ ANSI 61, 372

Chinese Components

Maintains Healthy Minerals:

Keeps beneficial calcium and magnesium in your water.

Annual Softener Cost:

Estimated yearly cost to operate and maintain the softening cartridge.

$150+

Can I trust my well water supply?

Unfortunately, private wells are non-treated water supplies and more susceptible to contaminants and bacteria. The best way to ensure clean tap water throughout your home is to keep pollutants out of the water before it enters your home in the first place. The level of contamination and bacteria can vary from month to month and impact the level of filtration that is required.

That’s why Kind recommends upgrading to the SF-600UV — featuring the latest Ultra Violet (UV) purification for complete protection. This powerful final stage of treatment uses concentrated UV light to neutralize harmful microorganisms, including bacteria, viruses, and pathogens, without adding any chemicals to your water. When it comes to the quality of water you drink and bathe in every day, there can be no compromise.

What is the warranty?

Our systems come with a limited lifetime warranty on the tanks, as well as a 120-day satisfaction guarantee. This means you can return it for any reason if you are not 100% Satisfied.

Can I use this system on Septic?

Yes, the SF-600 can be used with septic.

Can this system be installed outside?

Yes, the system can be installed outside. Operating temperature outside has to be between 39°F and 113°F.

What is the maintenance on the system?

The sediment filter is designed to be replaced once a year.

How do I know which system to order?

You should always start with one of our Water Test. Testing the water will guarantee you are buying the correct system for your water quality problem.

The cost of your water test will be fully credited toward any system purchase.

Or call our team of water experts with any questions at (888) 614-5559.

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15% OFF All Systems | Limited Time Only

Salt-Free Softener

Salt-Free Softener