Reliance Hot Water Heater Thermocouple

A seemingly insignificant component, the thermocouple in a Reliance hot water heater, has become a focal point for homeowners experiencing inconsistent heating and potential safety concerns.

The thermocouple, a safety device that ensures gas flow only when the pilot light is lit, is crucial for the safe and efficient operation of gas-powered water heaters.

Thermocouple Failures: A Growing Concern

Reports of Reliance hot water heater thermocouples failing prematurely have been increasing, prompting discussions on online forums and among plumbing professionals. The issue primarily affects gas-powered Reliance models, though specific model numbers linked to the problem remain inconsistent.

Homeowners are reporting symptoms such as pilot lights that repeatedly extinguish, inconsistent water temperatures, and a complete lack of hot water.

These issues often necessitate costly service calls or, in some cases, the replacement of the entire water heater.

What is a Thermocouple and Why is it Important?

The thermocouple is a small, inexpensive device that uses two dissimilar metals to generate a tiny electrical current when heated by the pilot light.

This current signals the gas valve to remain open, allowing gas to flow to the main burner and heat the water. If the pilot light goes out, the thermocouple cools down, the current stops, and the gas valve shuts off, preventing a dangerous gas leak.

A malfunctioning thermocouple can lead to a situation where the pilot light won't stay lit, or, in a worst-case scenario, could fail to shut off the gas supply if the pilot goes out.

Reliance Response and Consumer Impact

Reliance, a brand under the A. O. Smith Corporation, has not issued a formal recall regarding thermocouple failures. However, customer service representatives are reportedly addressing issues on a case-by-case basis.

The company acknowledges that environmental factors, such as dust and drafts, can contribute to pilot light problems, but has not specifically addressed the rising number of thermocouple failure complaints.

Homeowners facing thermocouple issues are often left with limited recourse. The cost of a new thermocouple is relatively low (around $20-$50), but the labor involved in installation, particularly if professional assistance is required, can be significant.

Expert Insights and Troubleshooting

Plumbing professionals advise homeowners to first try cleaning the thermocouple with fine steel wool to remove any carbon buildup that may be interfering with its functionality.

They also recommend checking for drafts or obstructions around the pilot light assembly that could be extinguishing the flame.

"In many cases, a simple cleaning or adjustment can resolve the issue," says Mark Johnson, a licensed plumber with 15 years of experience. "However, if the thermocouple is visibly damaged or corroded, it's best to replace it."

While replacing a thermocouple is a task that some homeowners may attempt themselves, it's crucial to follow safety precautions and shut off the gas supply before beginning any repairs. Improper installation can lead to gas leaks or other hazards.

Moving Forward

The ongoing issue with Reliance hot water heater thermocouples underscores the importance of regular maintenance and vigilance when it comes to gas-powered appliances. Homeowners are encouraged to familiarize themselves with the operation of their water heaters and to promptly address any signs of malfunction.

Whether Reliance will issue a formal statement or take further action remains to be seen.

In the meantime, consumers are urged to document any issues they encounter and to consult with qualified professionals for diagnosis and repair.