No Heat
Similar to low hot water supplies, the first thing you'll want to check if your water heater is only giving out cold is the pilot light. Check the electricity supply as well to ensure everything is running smoothly. If neither of these easy fixes work, a more complicated hot water heater repair, such as replacing the thermostat or a heating element, might be necessary. In this case, it is best to call in a professional to handle the issue.
Whenever performing a water heater repair, ensure that you follow all necessary safety steps, as the job can be dangerous. Always shut off the power and water as well as put out the flame to pilot setting before attempting any repair. If you're uncertain or find serious damage to your water heater, contact a professional.