Gas Water Heater Burner Noise

The hissing or sizzling sound is that of dripping water on the burners or a small spray of water in the burner area. When it is heated by the gas burner below moisture in the gunk flashes into steam that bursts into the water. Should there be a sizzling sound but no water visible you may still have a leak.

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In a tankless water heater several reasons can create noise.

Gas water heater burner noise. Generally speaking there is a lower chance of hearing strange noises with a tankless water heater vs tank model. String the hose to a floor drain or outside. Over time sediment accumulates inside the heater s tank. That s causing the rumbling.

Possibility 2 condensating is occurring. When that gas burner heats the water it boils and bubbles up until boom it escapes the sediment layer. On the other side if the flame becomes starved for air the gas combustion becomes incomplete and will result in sooting. Connect a garden hose to the drain fitting near the bottom of the tank.

Flushing the heater should remove the deposits and quiet. Turn off the water. If you are certain that the noise is from the thermocouple itself and not a variation in the gas burner flame then the most likely explanation is that the thermocouple is not mounted securely against movement. Unhealthy mostly yellow gas burner flames top check the gas regulator and air mix that can occur on either lp or propane or natural gas burners.

Too much of air will cause the burner flame to lift off the burner ports and burn with the noise. Others reasons for a noisy tankless water heater model may be an issue with the burner the fan may be dirty or possibly a leak in the sealed combustion resulting in irregular gas combustion. Our guide to what causes a noisy water heater accumulation of sediment mineral deposits. This often sounds like a percolating coffee maker.

For a water heater making noises like water running then you will have to check for leaks. Turn the control knob to pilot on a gas water heater or to off on an electric 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. How to fix a popping noise on water heaters 1.

Some gas water heaters are equipped with the air shutter which allows you to adjust the air gas mixture for proper burning. If you find your water heater is making noise when the hot water is turned on it could be caused. A water heater making bubbling noise can be traced to debris. If you are looking for the source for a water heater making noise humming problem you will need to check the heating element.

If the water heater has a leak there may be water standing or dripping in the area around the base. On 2019 11 20 by mm the new thermocouple in my natural gas direct vent fireplace pulsates. Also see gas regulator noises as problems with gas air mixture can cause noise at the appliance regulator as well as defective gas flame or too low gas flame.