Why is my water heater hissing?

A faulty drain valve can cause your water heater to hiss. Hissing or sizzling sounds can occur when water from the water heater’s tank hits hot surfaces. Infrequent hissing (e.g., if it only occurs after using large amounts of water) sometimes happens when condensation drips onto a hot surface.

Is a hissing hot water heater dangerous?

Should a water heater make a hissing noise? Under normal conditions, no. Even if the root cause is something simple like your temperature being set too high, you’ll still want to address it.

Does a gas heater make a hissing noise?

Hissing noise – indicates a possible air leak. This problem requires service from a qualified heating technician. Ticking noise – possibly a leaky gas valve. This problem requires service from a qualified heating technician.

What does a failing water heater sound like?

Popping or Rumbling Noises Water heater noises are another common culprit of water heater failure. If your water heater is making popping, creaking, or rumbling noises, it’s time to call Benjamin Franklin Plumbing® of Long Island. Hard water and mineral buildup are also to blame when it comes to water heater noises.

Why does my gas hot water heater make noise?

Your Water Heater might be Making Rumbling, Crackling, or Popping Noise. Layers of sediment build up inside your tank, trapping water underneath the layers of sediment. As the water heats up, it bubbles up through the sediment deposits, sometimes breaking off the sediment and causing it to become loose in the tank.

Is it normal for a water heater to make noise?

The water heater may be the most overworked and under-appreciated piece of mechanical equipment in a house. Popping Sounds One of the most common sounds a water heater can make is popping. When that happens, it’s usually an indication that your water heater has an excess of mineral deposits and sediment at the bottom.

Why does my water heater whistle?

Whistling from the water heater can indicate excess pressure building within the tank and problems with the TPR valve. It can also indicate cracks in the tank and a buildup of sediment within the drain valve. If your hot water heater is whistling, you should turn off the hot water heater right away.