Softener makes loud banging or hammering noises in pipes during regeneration or when water stops.

Safety first: Sudden pressure spikes can damage plumbing. If severe, consult a licensed plumber.

• Measure pressure: Attach a gauge to a nearby faucet. If static pressure exceeds 80 psi, install or adjust a pressure reducing valve on the main line.
• Install arrestors: Add water hammer arrestors near the softener or at problem fixtures.
• Secure piping: Clamp and support loose pipes to framing to reduce movement.
• Adjust cycle timing: If your Crystal Quest model allows, enable "soft close" or extended cycle transitions to reduce sudden flow changes.