This is the same process you use to replace the thermocouple on your hot water heater. Expect to pay a minimal cost for the thermocouple; you'll save a lot of money by replacing it yourself.

The thermocouple may be defective ... turn the thermostat back to an appropriate heat setting. Your hot water heater should work now. If the burner does not go on, set the thermostat at about ...

Q: My wife started complaining about a lack of hot water, so I ventured out ... that is a safety device at the base of your water heater. The thermocouple acts as a switch. On one end is a part ...

Q: My wife started complaining about a lack of hot water, so I ventured out ... that is a safety device at the base of your water heater. The thermocouple acts as a switch. On one end is a part ...

No hot water when you need it ... flow of gas if it senses that your pilot light is out. The tip of your heater's thermocouple -- the device looks like a copper tube -- should line up so that ...