The answer to 'water heater constantly running' is that a water heater running continuously is a sign of a problem that requires attention. This can be caused by a faulty thermostat, a sediment buildup in the tank, or a leak in the system. The constant running can lead to higher energy bills and potential water damage if left unchecked.
If your water heater is running constantly, first check the thermostat settings to ensure it's set to the appropriate temperature, typically between 120-140°F. If the thermostat appears to be functioning properly, the issue may be a sediment buildup in the tank or a leak in the system. These problems are best addressed by a professional plumber, as they will have the tools and expertise to properly diagnose and repair the issue.