Once the water leaves the softener, it should branch into two lines: a cold line that runs to interior fixtures and faucets, and a line that feeds the water heater. The outgoing line from the water heater then runs to interior fixtures and faucets that dispense hot water.

Where does a water softener get installed?

In most cases, water softeners are placed in a homes basement or garage, away from your living space. For homes without a basement, the next best place is near the water heater—again, not exactly a main focus of the home.

How do you plumb a water softener?

2:225:12How to Install a Whole-House Water Softener | Ask This Old House YouTubeStart of suggested clipEnd of suggested clipRight like this. So now the cold water will come right through here. Go into the softener theMoreRight like this. So now the cold water will come right through here. Go into the softener the softened water will leave through here and return right here and go up to the house.