Water Softeners & Filters

Water softener install with bypass valve

Install the softener after the main shutoff (and usually before the water heater) with a bypass valve so water can run while the unit is serviced. Run the valve drain to an approved drain with an air gap, run the brine-tank overflow separately by gravity, and never join the two.

Cross-checked ~240 min advancedBrands: All

Before you start

  • Shut off the main water and drain the lines before cutting.
  • Check local code: some areas require a plumber or permit, and some limit softener discharge.
  • If the house uses metal pipe for electrical grounding, install a jumper across the softener as the instructions require.

Diagnostic steps

Unlock all 6 steps with expected values

Full library + AI assistant for $34.90, one time.

Get lifetime access

OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

More water softeners & filters guides

Water softener install with bypass valve · OnCall Tech