Confirm the fit
Make sure hardness is the concern
Scale on fixtures, residue in tubs and sinks and detergent that underperforms are the problems a softener is designed to address. If those are what you see, softening is worth planning. If taste or a particular substance worries you more, start with filtration.
A softener is not chosen to remove a particular contaminant from drinking water; that is the role of a filter matched to the substance. Knowing which concern comes first keeps the installation focused and avoids choosing equipment for the wrong job.
