Water Heater Knocking Noise

Knock or hammer sound.

Water heater knocking noise. Also when you go to the bathroom you here the same sound like running water enveloping the room. If for some reason your water heater is only making noise when your household uses up hot water you would likely need to get it checked. Your water heater s heating element is at the bottom of the tank right where the sediment has settled and mixed with water. When you turn off the line of the gas heater the noise of running water minimize and so in the bathroom.

We don t think any noise from your water heater or other home system should be ignored. Your water heater is making a knocking banging or popping sound because of the large amount of solid sediment minerals in the tank. Under high temperatures the moisture turns into steam and bursts through the layer of sediment to create that knocking noise from your water heater. Here s how sediment causes the noise the sediment traps water underneath it at the bottom of the tank where the gas heating burner is.

The scientific explanation for why high pressure creates knocking noises is that when the water s flow rate in the pipe is above a certain level which varies based on the diameter of the pipe the flow goes from laminar flowing in even parallel layers to turbulent chaotic. Only a qualified professional can accurately diagnose the issue and do the necessary repairs. Gas water heater is making loud noise like a running water inside when you open the line. This often sounds like a percolating coffee maker.

When the water flow is abruptly stopped there s no place for the water to go within your household plumbing so it flows in reverse back to its original source. A water heater can occasionally make a knocking or popping noise that falls somewhere between these two extremes. Water heater makes noise when hot water is turned on. If you re hearing the undeniably unique water heater knocking sound you ll know exactly what we mean.

In this case your water heater. When this happens the high temperatures of the water heater cause the sediment to harden and trap pockets of water. If your water heater is making a thumping noise it s likely due to sediment build up from hard water in your area. When that gas burner heats the water it boils and bubbles up until boom it escapes the sediment layer.

This can be a serious issue for your water heater and one that should be attended to immediately. A knocking noise especially can indicate problems that can accelerate the longer you let them go on. The popping noise is steam bubbles escaping the sediment.