Gas valves on home water heaters incorporate an internal safety shutoff feature.
Gas water heater not heating.
If the water heater is not producing hot water it can be due to a malfunction in the thermostat.
Faulty heating system a gas water heater can last anywhere from 6 to 10 years.
The thermocouple is a sensor that tells the gas valve when to allow gas to flow to the burner.
The thermostat in water heaters is a thermoelectric device known as thermocouple and is made up of a strip of two metals.
A gas water heater cannot heat effectively if the burner is dirty or not functioning properly.