Water Softener Salt: Types, Pellets vs Crystals and How Much to Use
Which water softener salt to buy: pellets vs crystals, rock salt, potassium chloride, how much salt to use and how to avoid salt problems.
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Buying GuidesBuying Guides: Buy the Right System Once
Honest, step-by-step guides to sizing, comparing and budgeting for water softeners and filters. No paid rankings, no brand hype, just what actually matters.
Essential Buying Guides
Read these before you get a quote or buy anything.
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What Size Water Softener Do I Need?
Sizing chart, types, features and certifications, step by step.
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Water Softener Cost (2026)
Prices by type and size, installation and yearly salt costs.
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Water Softener vs Conditioner
Which one you actually need for your hardness level.
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Types of Water Filters
Match the right filter to the problem in your water.
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Reverse Osmosis Explained
Costs, water waste and what RO removes.
Read guide →
Whole House Water Filter Cost
What you will pay for point-of-entry filtration in 2026.
Our 4-Step Buying Process
Follow these steps for any water treatment system.
3
Check certification
Look for NSF/ANSI 44 for softeners and 42, 53 or 58 for filters, or the WQA Gold Seal.
4
Compare quotes
Get two or three quotes and ask what is included: install, drain, bypass and warranty.
Know before you buy
Typical Costs at a Glance
Prices vary by size, brand, region and who installs it. These are typical installed ranges.
Water softener: about $1,500 averageMost homes pay about $1,000 to $1,800 for a standard salt-based softener installed by an independent plumber, plus about $70 to $215 a year for salt.
Under-sink reverse osmosis: $150 to $1,300Plus filters every 6 to 24 months and a new membrane every 3 to 5 years.
Full breakdown: water softener cost guide.
How We Write Our Buying Guides
- No paid placements: brands cannot pay to be featured
- Facts from EPA, USGS, NSF and real cost data
- Updated when prices, standards or data change
- Written for US homes and US water
Read our editorial policy.
Buying Guide FAQ
Should I buy from a dealer or install it myself?
Dealer systems often cost more but include installation and local service. Buying a unit and hiring an independent plumber, or installing it yourself, usually costs less. Compare total price, warranty and service before deciding.
What size water softener do I need?
Multiply the people in your home by 75 gallons and by your hardness in grains per gallon, then multiply by 7 for weekly demand. Choose a softener a size above that number.
Are expensive water softeners worth it?
Sometimes. Paying more for a metered valve, good resin and a strong warranty is usually worth it. Paying more for brand names or features you will not use usually is not.
Do I need a filter, a softener or both?
A softener fixes hard water and scale. A filter removes contaminants like chlorine, lead or PFAS. Homes with hard water and drinking water concerns often use both.
Have a question about your water?
Tell us what you are seeing at home and we may cover it in an upcoming guide.
Latest Guides
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Salt-Free Water Softener: How It Works, Pros, Cons and Cost
How salt-free water softeners work, what the research says, pros and cons, costs and whether a saltless system is right for your home.
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Whole House Water Filtration System: Types, Cost and How to Choose
How whole house water filters work, the main types, what they cost installed, and how to choose the right system for your water.
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What Size Water Softener Do I Need? Sizing Chart and Buying Guide
A step-by-step water softener buying guide: test your water, size it right, pick the type and features that matter, and avoid common mistakes.
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How Much Does a Water Softener Cost? (2026 Price Guide)
A water softener costs about $1,500 installed on average, with most paying $500 to $6,000. See 2026 prices by type and size, installation and salt costs, and how to save.
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Water Softener vs Water Conditioner: Which Do You Need?
A water softener removes hardness minerals; a salt-free water conditioner only changes them to reduce scale. Compare how each works, pros and cons, and which fits your home.
