You’re accustomed to the sounds your water heater makes as it’s running. If an out of the ordinary noise disrupts this, it often indicates a problem requiring repairs.
The most common warning sound you may hear from the tank of a water heater is called kettling. The name describes the noise, which is similar to water boiling in a kettle. It’s alarming to hear, but the first thing you need to know is that there’s very little chance the water heater’s tank is about to “blow.” However, kettling is a warning that you need to call a water heater professional to inspect the system and have any necessary repairs done.