The softener is supposed to be plumbed to the main inlet of the home so the whole house has soft water. Newer homes may have a loop making installation of a water softener much easier. If you do not have one like most do not then it seems to be a costly installation. A water softener can be added to a home any time..A water softener loop is used to provide easy access to the plumbing system of a house. A section of pipe exits the wall and is exposed. This allows plumbers to access the water line..My main water supply on my home is located on the east wall of the home, whereas my garage is located on the west side of the home. There is no water softener loop in the home, and in Arizona most water softeners are put in the garage on newer homes..A soft water loop is a copper piping system that reconnects your home’s internal water distribution pipes to the water softener. A soft water loop is a copper piping system that reconnects your home’s internal water distribution pipes to the water softener..