How Much Does a Water Softener Cost? 2026 Prices, Installation and Upkeep
Quick answer: a single-tank salt-based water softener typically costs $500–$1,700, and a standard professional installation adds about $500–$700, or $200–$800 more if your home needs a new softener loop. Dealer systems from brands like Culligan and Kinetico usually run $2,500–$4,500. After that, salt costs about $5–$10 a month. (Ranges from This Old House’s 2026 cost guide, based on Angi data.)
10-year water softener cost calculator
Pick a starting point, then replace the numbers with your own quotes.
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Five example budgets
Here’s what the calculator’s starting points add up to. All five assume 12 lb of salt a week at $7 per 40-lb bag. Owners spend $50 a year on other upkeep, or $200 for the dealer system with service visits. Renters buy their own salt.
| Scenario | Up front | First year | 10 years |
|---|---|---|---|
| DIY install ($850 softener) | $850 | $1,009 | $2,442 |
| Store brand, installed ($1,300 + $600) | $1,900 | $2,059 | $3,492 |
| Installed + new loop (+$500) | $2,400 | $2,559 | $3,992 |
| Dealer system ($3,500 installed) | $3,500 | $3,809 | $6,592 |
| Renting ($45 a month + $200 setup) | $200 | $849 | $6,692 |
In these examples, renting is the cheapest in year one but the most expensive over 10 years. A DIY install costs the least over 10 years if you’re comfortable doing the plumbing. Your own quotes will move these numbers, so try them in the calculator.
Water softener cost by type
| Type | Typical cost (unit) | What you get |
|---|---|---|
| Single-tank salt-based (ion exchange) | $500–$1,700 | Removes hardness minerals. The most common choice for homes. |
| Dual-tank salt-based | $1,000–$5,000 | Soft water around the clock: one tank works while the other regenerates. |
| Salt-free conditioner | $800–$4,000 | Reduces scale but leaves the minerals in the water. No salt to buy. |
| Magnetic or electronic descaler | $200–$600 | Doesn’t remove hardness minerals. Results are much less certain. |
Source: This Old House, 2026 water softener cost guide (based on Angi data). Portable RV softeners usually cost a few hundred dollars.
Comparing models? See our picks for the best water softeners, sorted by water type and home size, or the best salt-free water softeners.
Cost by size
Bigger softeners hold more resin and cost more. The right size depends on your hardness and how many people live in your home, not on the size of the house. Use the water softener size calculator to find yours.
| Grain capacity | Typical water hardness | Typical cost (unit) |
|---|---|---|
| 24,000 | 6–9 gpg | $300–$600 |
| 32,000 | 10–12 gpg | $400–$1,000 |
| 48,000 | 13–18 gpg | $500–$1,200 |
| 64,000 | 18–20 gpg | $1,000–$1,500 |
| 80,000 or more | 20+ gpg | $1,200–$1,800 |
Source: This Old House, 2026 cost guide. Hardness pairings assume a typical household; your size calculator result may differ.
Cost by brand type
- Store brands (GE, Whirlpool, Kenmore): about $800–$1,800 for a complete system, according to This Old House. Sold at home improvement and appliance stores.
- Dealer brands (Culligan, Kinetico, EcoWater): about $2,500–$4,500 for a complete system, per the same guide. One site that collects installed quotes found medians of about $5,500 to $5,750 for Culligan and Kinetico, from small samples. Dealer prices usually include installation and local service, so ask for an itemized quote.
- Online brands: companies such as SpringWell and SoftPro, and systems built on Fleck or Clack valves, sell directly. You buy the unit and arrange installation yourself.
Installation cost
This Old House puts professional installation at $150–$1,000, with a typical standard installation at $500–$700. The biggest variable is whether your home already has a softener loop: plumbing that routes the main water line to where the softener sits. Adding one costs about $200–$800 more.
Other things that raise the price:
- Drain access. The softener needs a drain for regeneration water. A new drain line can need a permit in some areas.
- An outlet. Most softeners need a standard electrical outlet nearby.
- Location. Garages, crawl spaces and outdoor installs can mean extra pipe, insulation or a cover.
- Removing an old unit. Ask whether haul-away is included.
Installing it yourself can save $500–$1,000 if you’re comfortable with plumbing. Mistakes can cause water damage, though, so follow your local plumbing code and hire a licensed plumber if you’re unsure. Our DIY installation guide lists the parts and steps.
Water softener replacement cost
Replacing an old softener usually costs less than a first-time install, because the loop, drain and outlet are already in place. Expect the price of the new unit plus a standard installation fee, minus any loop work.
Ongoing costs
- Salt: about $5–$9 per 40-lb bag in current store listings. This Old House estimates $5–$10 a month. How much you use depends on your hardness, water use and salt setting. A family of four with hard water might use 10–16 lb a week; the size calculator estimates your own.
- Cleaner and test strips: a few dollars a year to keep the resin clean and check your water.
- Filters: if your system includes a pre-filter, replacements cost about $20–$50 each.
- Professional service: optional, about $150–$300 a year.
- Water and electricity: regeneration uses some water and the control valve uses a little power. For most homes these cost less than the salt.
- Resin: it eventually wears out. See water softener resin replacement for signs and costs.
High-efficiency softeners use less salt and water per regeneration. See the best high-efficiency water softeners.
Renting vs buying a water softener
Dealers often rent softeners. In offers collected by Tap Water Data, advertised starting prices ran about $15–$57 a month (median about $37). Rents people reported actually paying ran $40–$100 a month (median about $60). Where a setup fee was stated, it was $150–$249. Both samples are small, and what’s included varies: some rentals include salt or service, others don’t.
Renting can make sense if you’ll move within a year or two, or if you want maintenance handled for you. Over 10 years it usually costs more than buying, and much more than a DIY or store-brand softener. With the calculator’s starting numbers (an $850 DIY softener against $45 a month in rent), buying comes out ahead after a little over a year.
How to save money on a water softener
- Size it correctly. An oversized softener costs more up front without softening your water any better.
- Get at least three written quotes, and check what each includes: loop and drain work, permits, haul-away and warranty.
- Consider installing it yourself if you have plumbing experience.
- Use an efficient salt setting, and compare salt prices between stores.
- Read rental and financing terms carefully, including how long the contract runs and what it costs to end early.
Is a water softener worth the cost?
If your water is hard, a softener reduces scale on fixtures, pipes and appliances and helps soap work better. If your water is soft (under about 3.5 grains per gallon), you probably don’t need one. Read water softener benefits to decide. On a well? Start with our guide to the best water softeners for well water.
Frequently asked questions
How much does a water softener cost installed?
A single-tank salt-based softener ($500–$1,700) plus a standard installation ($500–$700) comes to roughly $1,000–$2,400, before any loop work. Dealer systems usually cost $2,500–$4,500.
How much does it cost to run a water softener each year?
Mostly salt. At the calculator’s starting numbers (12 lb of salt a week at $7 per 40-lb bag, plus $50 for cleaner and other upkeep), that’s about $160 a year.
Is it cheaper to rent or buy a water softener?
Buying is cheaper if you stay more than a year or two. Renting can make sense for short stays or if you want service included.
How much does a whole-house water softener cost?
Most whole-house salt-based systems cost $500–$1,700 for a single tank, more for large or dual-tank systems, plus installation.
How much does it cost to replace a water softener?
The new unit plus a standard installation, usually without the cost of a new loop, since that plumbing is already in place.
Sources
- This Old House, How Much Does a Water Softener Cost? (updated June 2026, based on Angi data). Costs by type, size, brand, installation and upkeep.
- Tap Water Data, Water softener brands compared: cost, rental and warranty. Installed-quote medians for Culligan and Kinetico.
- Tap Water Data, Renting a water softener vs buying (figures read October 2026). Advertised and reported rental prices and setup fees.
- Salt prices: current 40-lb bag listings at Ace Hardware and Walmart.