What Does It Cost to Run a Water Softener?
Salt, recharge water and a little electricity. Here’s how to estimate each one for your household, with a worked example for typical Central Florida water.
Also asked: Is My Water Softener Still Working? · Do I Need Whole-Home Reverse Osmosis?
What goes into a year
In this guide
The short answer
Less than most people expect. The running costs are salt, the water used to recharge the resin, a little electricity and routine care. A family of four with typical Central Florida hardness uses roughly 200 pounds of salt a year, about five 40-pound bags, with an efficient, properly set system.
What you pay for
- Salt recharges the resin that removes hardness.
- Recharge water rinses and resets the resin.
- Electricity runs the control valve, a small part of the cost.
- Care keeps the valve, settings and brine tank working right.
Work out your salt
Start with how many grains of hardness the softener removes in a year: people x gallons per person per day x 365 x grains per gallon.
- 4 people x 60 gallons x 365 days = 87,600 gallons a year
- 87,600 gallons x 8 grains = 700,800 grains
- At 3,500 grains removed per pound of salt: about 200 pounds a year
That’s about five 40-pound bags. Leaks, guests and settings change it, so use your own hardness and water use.
Work out your recharge water
EPA’s WaterSense guidance points to softeners that remove at least 3,500 grains per pound of salt and use no more than 4 gallons of water per 1,000 grains removed. In the example above, that’s about 2,800 gallons a year. Multiply by your water and sewer rate to see the cost.
Why the right valve saves money
A timer-based softener recharges on a schedule whether you used the water or not. A demand-metered valve tracks actual use and recharges only when the resin needs it. That’s the valve we install, set to your tested hardness, so you don’t waste salt or water.
Keep salt and water use down
- Set the system from measured hardness, not a guess.
- Fix leaks, including running toilets.
- Keep irrigation and pool filling off softened water where the plumbing allows.
- Check the salt and watch for salt bridges.
Rather not haul salt?
We deliver it and refill the tank for you. See salt delivery.
How Sunstorm treats the whole home
We use the highest-performing multi-stage media we can buy, size it to your water and household, and add reverse osmosis where you drink.
HydroOne or HydroDuo
Catalytic carbon, KDF and 10% cross-linked softening resin treat the water where it enters your home, so every shower, sink and appliance gets filtered, soft water.
See HydroOne →HydroSip RO
Four-stage reverse osmosis under the sink with its own faucet, for drinking water, coffee, cooking and ice.
See HydroSip →Want RO at every tap? We install Hydro360 whole-home reverse osmosis too. For most homes, filtration and softening plus kitchen RO is the better value: the same drinking water at the sink, without paying to purify the water you shower, flush and wash with. See Hydro360
Questions homeowners ask
How often should I add salt?
Check monthly at first. Your hardness, water use and settings decide how fast it drops.
Is recharging more often better?
No. Extra recharges waste salt and water. The goal is to recharge just before capacity runs out.
Does a softener raise my electric bill?
Barely. The valve uses little power. Salt and water are the bigger costs.
Why did my salt use suddenly jump?
A leak, a change in water use, a wrong setting or a valve problem. A service check finds it.
Sources
- EPA WaterSense: home maintenance and softener tips
- EPA WaterSense: water softeners
- EPA WaterSense: other water-efficient products
- NSF: water softener standard (NSF/ANSI 44)
About this guide: We check our guides against current EPA, CDC, state and utility sources and update them as rules and equipment change.
