Whether your domestic hot water system continues to function during a power outage depends entirely on whether your water heater is powered by electricity or natural gas. If you have a standard electric water heater, it will stop heating water immediately when the power goes out because its heating elements and electronic thermostats rely entirely on grid electricity. However, a traditional gas water heater or tankless gas unit may still provide hot water temporarily if it uses a standing pilot light, though modern electronic ignition gas models will also fail without electrical power. You can troubleshoot hot water availability safely by checking your water heater type. You can verify that your corrective action is successful when confirming that the pilot light is lit or waiting for grid power to return restores hot water to your home fixtures.
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