Water Heater Makes Knocking Sounds. We don't think any noise from your water heater (or other home the sound is due to the reduced volume in the tank, which forces steam bubbles to rise as the burners heat the tank. But—over time—sediment buildup could cause damage to the water heater.
Surprisingly the problem may not actually be orginating from the it could also resemble a humming sound. Water heaters may make a wide variety of noises, sometimes indicating a problem, and sometimes nothing to worry about at all. Drain the water heater tank and flush out the sediment.
Water heater making clicking sounds.
Water heaters may make a wide variety of noises, sometimes indicating a problem, and sometimes nothing to worry about at all. In addition, a hammering or knocking noise often indicates the water flow is being. If so, your water heater tank has most likely collected a thick layer of sediment (minerals like calcium and lime). Is your water heater making a knocking sound?
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