Normally, your water heater should operate very quietly, and you should barely notice it running. While you may occasionally hear faint, soft hissing from burners, gentle murmuring during heating cycles, or quiet clicks from electrical relays, you should never hear loud, intrusive noises. If you can clearly hear loud rumbling, violent popping, screeching, or banging echoing from the tank through your walls, it indicates underlying issues like heavy sediment buildup or thermal expansion that require immediate attention. Verification: Inspect your water heater during a heating cycle to evaluate its operational noise level.
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