Boss Gas water heater Parts — Browse All Models

Common Boss gas water heater replacement parts

• Thermocouple. The thermocouple detects whether your pilot light is on by generating a very small electrical current powered by the heat of the pilot flame. If the gas valve assembly doesn't sense the small electrical current provided by the thermocouple, or the thermocouple cools, it assumes that the pilot light is off and shuts down the gas.
• Gas valve assembly. The gas valve assembly monitors tank water temperature and cycles the burner on and off to maintain set water temperature.
• Pilot and igniter assembly. The pilot and igniter assembly supplies the flame for the burner to ignite the gas and includes the thermocouple.
• Drain valve. The drain valve fits at the bottom of the tank and allows you to drain water from the tank.

Top reasons why your Boss gas water heater won't heat water

• Pilot light not lit. Check to see if the pilot lot is on. Light the pilot if it's off.
• Check the gas supply. Make sure that the gas cut-off valve is fully open and that you have an adequate gas supply provided to the water heater.
• Bad thermocouple. If the pilot won't stay lit and the gas supply is okay, then a faulty thermocouple may be keeping the pilot from staying lit. Replace the thermocouple if it's bad.
• Failed gas valve assembly. A bad gas valve assembly won't allow any gas to flow to the pilot or the burner. Replace the gas valve assembly if it's bad.