The thermocouple, present in almost all pre-2012 gas water heaters, essentially keeps your unit’s pilot lit. The thermocouple is intended as a safety component in your water heater that, in case of a pilot light failure, closes off the gas line to prevent the combustion chamber from flooding with unburned gas. When your thermocouple is malfunctioning, your pilot light won’t stay lit, which will result in a lack of hot water for your home. The tip of a thermocouple naturally deteriorates over time, so regularly scheduled maintenance and an occasional thermocouple replacement is necessary to extend the life of your water heater unit and avoid complete unit replacement. If you’re having trouble keeping your pilot lit, call ProFlo today and we’ll schedule a thermocouple replacement at your earliest convenience.