EcoSmart unit is noisy with water hammer or banging sounds when taps are opened or closed.

Safety: Plumbing work may require shutting off water; electrical power can remain on if not opening the unit.

• Check water pressure: Use a pressure gauge on a nearby faucet. If static pressure exceeds manufacturer recommendations (often ~80 psi), install or adjust a pressure-reducing valve.
• Install arrestors: Add water hammer arrestors near quick-closing valves (dishwasher, washing machine, some faucets) to absorb shock.
• Secure piping: Ensure hot and cold pipes near the EcoSmart unit are properly strapped and supported.
• Internal supports: If noise seems to come from inside the unit, with power OFF, check that internal manifolds and modules are firmly mounted.