Water softener causes a loud banging or hammering noise in the pipes during regeneration.

Safety first: High pressure can damage plumbing; consider checking pressure before proceeding.

Check water pressure:

• Use a pressure gauge on a nearby faucet to measure static pressure. If above 80 psi, install or adjust a pressure reducing valve.

Plumbing support:

• Inspect pipes near the softener and secure any loose sections with proper clamps or hangers.

Drain line:

• Ensure the drain line is properly sized and not excessively long or elevated, which can cause surging.

Resolution: If noise persists, a water hammer arrestor may be installed on the supply line near the softener. Internal valve issues are less common but may require a technician to inspect the control head.