We had a customer of ours that had an old water softener in their home reach out because it was acting up. With the age and issues going on, we sent out a project coordinator to go over some new equipment options with them. After some water tests, we found some higher iron and sulfur in the water. The old water softener was not intended to treat high iron or sulfur, so I recommend adding an air charge filter to remove the iron and sulfur. The customer liked the sound of not having to smell water anymore. After the installation of the new softener and filter, the customer is very happy with the water conditions!