How Much Does It Cost to Run a Water Softener?
A typical Water Softener uses 70W and runs about 1 hours/day. At the national average rate of 16.72¢/kWh, that costs approximately $0.35/month.
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What Affects the Cost of Running a Water Softener
Water Softeners Use Minimal Electricity
A water softener's electrical components (valve motor, controller, timer) draw 30-70W only during the regeneration cycle, which happens every 3-7 days and lasts 60-90 minutes. Total monthly electricity: 1-3 kWh ($0.15-$0.50). The real ongoing cost is salt ($5-$10/month for a family of four). Electricity is a negligible operating expense.
Water Softener vs. Alternatives
How the monthly cost of a Water Softener compares to other options:
| Alternative | Est. Monthly Cost | Notes |
|---|---|---|
| Water Softener (this page) | $0.35 | At national average rate, 1hrs/day |
| Salt-based water softener | ~$0.25-0.50 electricity + $5-10 salt | Most effective softening. Electricity is minimal; salt is the main cost. |
| Salt-free water conditioner | ~$0.15-0.30 electricity | Less effective than salt-based. Does not actually remove minerals; prevents scaling. |
| No treatment | $0 | Free but hard water causes scale buildup in pipes and appliances, reducing their efficiency and lifespan. |
Water Softener Cost by State
What a Water Softener costs to run at 70W for 1 hours/day in every state:
| State | Rate | Monthly Cost | Yearly Cost |
|---|---|---|---|
| Alabama | 14.82¢ | $0.31 | $3.73 |
| Alaska | 25.34¢ | $0.53 | $6.39 |
| Arizona | 13.81¢ | $0.29 | $3.48 |
| Arkansas | 12.63¢ | $0.27 | $3.18 |
| California | 31.41¢ | $0.66 | $7.92 |
| Colorado | 15.24¢ | $0.32 | $3.84 |
| Connecticut | 29.35¢ | $0.62 | $7.4 |
| Delaware | 15.24¢ | $0.32 | $3.84 |
| District of Columbia | 15.87¢ | $0.33 | $4 |
| Florida | 15.63¢ | $0.33 | $3.94 |
| Georgia | 14.12¢ | $0.3 | $3.56 |
| Hawaii | 43.21¢ | $0.91 | $10.89 |
| Idaho | 10.87¢ | $0.23 | $2.74 |
| Illinois | 16.37¢ | $0.34 | $4.13 |
| Indiana | 15.12¢ | $0.32 | $3.81 |
| Iowa | 14.23¢ | $0.3 | $3.59 |
| Kansas | 14.98¢ | $0.31 | $3.77 |
| Kentucky | 12.87¢ | $0.27 | $3.24 |
| Louisiana | 11.98¢ | $0.25 | $3.02 |
| Maine | 22.87¢ | $0.48 | $5.76 |
| Maryland | 16.12¢ | $0.34 | $4.06 |
| Massachusetts | 28.76¢ | $0.6 | $7.25 |
| Michigan | 18.76¢ | $0.39 | $4.73 |
| Minnesota | 15.34¢ | $0.32 | $3.87 |
| Mississippi | 13.76¢ | $0.29 | $3.47 |
| Missouri | 13.12¢ | $0.28 | $3.31 |
| Montana | 12.45¢ | $0.26 | $3.14 |
| Nebraska | 11.98¢ | $0.25 | $3.02 |
| Nevada | 15.03¢ | $0.32 | $3.79 |
| New Hampshire | 25.34¢ | $0.53 | $6.39 |
| New Jersey | 18.76¢ | $0.39 | $4.73 |
| New Mexico | 14.87¢ | $0.31 | $3.75 |
| New York | 22.87¢ | $0.48 | $5.76 |
| North Carolina | 13.98¢ | $0.29 | $3.52 |
| North Dakota | 11.87¢ | $0.25 | $2.99 |
| Ohio | 15.34¢ | $0.32 | $3.87 |
| Oklahoma | 11.98¢ | $0.25 | $3.02 |
| Oregon | 13.12¢ | $0.28 | $3.31 |
| Pennsylvania | 16.87¢ | $0.35 | $4.25 |
| Rhode Island | 27.12¢ | $0.57 | $6.83 |
| South Carolina | 14.98¢ | $0.31 | $3.77 |
| South Dakota | 13.76¢ | $0.29 | $3.47 |
| Tennessee | 12.87¢ | $0.27 | $3.24 |
| Texas | 14.98¢ | $0.31 | $3.77 |
| Utah | 10.87¢ | $0.23 | $2.74 |
| Vermont | 21.34¢ | $0.45 | $5.38 |
| Virginia | 15.34¢ | $0.32 | $3.87 |
| Washington | 10.76¢ | $0.23 | $2.71 |
| West Virginia | 13.12¢ | $0.28 | $3.31 |
| Wisconsin | 16.98¢ | $0.36 | $4.28 |
| Wyoming | 11.23¢ | $0.24 | $2.83 |
Energy-Saving Tips for Your Water Softener
- Water softeners use very little electricity; most of the cost is in salt
- Set regeneration to happen during off-peak hours
- Only regenerate as needed; demand-initiated regeneration saves salt and energy
- A properly softened water supply helps your water heater run more efficiently
Frequently Asked Questions
About 1-3 kWh per month ($0.15-$0.50 at the national average rate). The motor and controller only run during regeneration cycles (every 3-7 days for 60-90 minutes). Standby power is 2-5W. Electricity is a trivial portion of water softener operating costs; salt ($5-10/month) is the main expense.
Yes. Hard water causes mineral scale buildup on the water heater element and inside the tank, reducing efficiency by 10-25% over time. A water softener prevents this scale, keeping the heating element efficient and extending the heater's lifespan. The energy savings on the water heater alone ($5-15/month) far exceed the softener's electricity cost ($0.15-$0.50/month).
Related Appliances
Electricity cost estimates are based on typical wattage and average residential rates from the U.S. Energy Information Administration. Your actual costs may vary based on your appliance's specific wattage, usage patterns, and your utility's rate structure. See our full disclaimer.