No, your hot water will completely stop working if the pilot light goes out. Because the pilot flame is required to ignite the main gas burner whenever the thermostat calls for heat, an extinguished pilot light means the gas supply is cut off by the safety thermocouple and water inside the tank will no longer be heated. While cold water will still flow normally from your taps, stored hot water will cool down within a few hours. Verification: Check the water heater control valve to see if the pilot assembly is unlit.
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