Water treatment · Costs, budgets and timelines · Updated November 2026
Water Softener Installation Cost
A water softener costs about $1,500 on average to install, with most homeowners paying between $200 and $6,000, according to HomeAdvisor. The system type and how much plumbing work is needed drive the price.
Costs by system type
| System | Typical cost |
|---|---|
| Single-tank ion exchange (salt-based) | $500–$1,700 |
| Double-tank ion exchange | $1,000–$5,000 |
| Salt-free system | $800–$4,000 |
From HomeAdvisor. Its page does not say whether these include installation; ask for an installed price.
Ongoing costs
- Salt: about $5–$10 per 40-pound bag (potassium costs more, about $50–$70 per bag).
- Maintenance contracts: about $100–$300 per year.
- Periodic inspection and resin cleaning.
What affects installation cost
- Whether there is a loop in the plumbing already set up for a softener.
- A drain and an outlet near the installation spot.
- Bypass valves so outdoor faucets stay unsoftened.
- Permits where required.
Test your water first so the system is sized for your actual hardness. See understanding a home water test and softener vs. whole-house filter.
Sources
- HomeAdvisor: Water softener installation cost, accessed November 2026
Cost figures are national ranges from the sources listed above, not a quote from FixFinch or any contractor.