Unit is noisy with water rushing or banging sounds when taps are opened or closed.

Safety: Noise itself is usually not dangerous but can indicate stress on plumbing.

Noise reduction steps:

• Check household water pressure. If above recommended levels (typically 60–80 psi), install or adjust a pressure-reducing valve.
• Install water hammer arrestors near quick-closing valves (dishwasher, washing machine) and near the Eemax heater if needed.
• Ensure the heater is securely mounted to a solid surface with appropriate fasteners and vibration isolation if necessary.
• Bleed air from the plumbing system by opening all taps fully for several minutes.

Persistent severe banging should be evaluated by a plumber to prevent pipe damage.