February 3, 2026

Reasons Your Water Heater Pilot Light Keeps Going Out

February 3, 2026

If you have a gas-powered water heater, you know the importance of the pilot light. It’s the tiny flame igniting the burner, and if it goes out, your unit stops functioning. A pilot light that keeps going out can be frustrating and, in some cases, dangerous. Keep reading as Roberts Plumbing Hydro Jet & Rooter shares the common reasons the light won’t stay lit and when to call for water heater repair in Chatsworth, CA.

FAULTY GAS CONTROL VALVE

The gas control valve regulates the gas flow to the burner and pilot light. If it malfunctions, it may not allow enough gas to reach the light, causing it to go out. Furthermore, it can cause other problems with your tankless water heater, such as inconsistent water temperatures. You can address this issue by having a professional replace the valve.

LOW GAS PRESSURE

If the gas pressure is insufficient, the pilot light may not stay lit, or the flame may be too weak. This usually results from a faulty gas regulator or an issue with the gas supply line. If you notice low gas pressure, enlist water heater services to diagnose and fix the problem.

DIRTY OR DAMAGED THERMOCOUPLE

The thermocouple is responsible for keeping the pilot flame lit. When it detects the presence of the flame, it sends a signal to the gas valve to stay open. However, if the thermocouple is old, broken, or covered by dirt, the signal it conveys will be impaired, shutting off the gas to the pilot light and causing it to go out. This is common in any water heater installation and only requires a simple fix.

Regular maintenance is key to preventing pilot light issues from occurring. If you need help with your water heater, Roberts Plumbing Hydro Jet & Rooter is just a call away. We specialize in hot water heater replacement, repair, and inspection.

Contact us today to benefit from our prompt and cost-effective services. We look forward to addressing any water heater-related issues you may have.

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