Technical Articles

FAQ - Why does my heater keep making noise, even when there is no water running?

The heater has control valves that will make a "beeping" sound. This can be triggered during normal operation or as part of a self diagnostic mode of the heater even during standby mode. If you are hearing other sounds please call your local Noritz Service agent , listed at or Technical Service at 866-766-7489 .

Applicable Models
  • Models: ALL MODELS
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