Q: My wife started complaining about a lack of hot water, so I ventured out into the garage to check out the water heater. I took the door off and peeked inside and discovered there was no flame. Following the instructions on the tank, I relit the pilot but as soon as I let go of the button, the pilot light went out. I originally thought a breeze may have blown it out, but now I don’t know what to do. Q: My wife started complaining about a lack of hot water, so I ventured out into the garage to check out the water heater. I took the door off and peeked inside and discovered there was no flame. Following the instructions on the tank, I relit the pilot but as soon as I let go of the button, the pilot light went out. I originally thought a breeze may have blown it out, but now I don’t know what to do. A: It sounds like a problem with your thermocouple. It is a $15 part that is a safety device at the base of your water heater. The thermocouple acts as a switch. On one end is a part that looks like a rectal thermometer (this part sits in the flame of the pilot). On the other end is a fitting that screws into the gas valve. Connecting the two ends is a wire. The part works like this: ...