What is an Annual Maintenance Cost of a Water Softener? Besides the initial costs in buying and installing a water softening system, one must think of the annual maintenance costs of such a system. Routine maintenance is useful in ensuring that the system is operating well and also increases its life. A majority of home owners who are doing research about the cost of a water softener also desire to know about the operating expenses in the long run. An average maintenance cost is between 150-400 a year. The largest recurrent expense is the salt refills, which they need to regenerate the ion exchange resin beads. Read more: https://houseura.com/blog/how-much-is-a-water-softener/