Two ways to get to Cody.... Of course I took 14A with the steepest downgrade and greatest drop in the shortest distance.
The next step is to ensure the hot water heater is drained completely. Open the door that you use to light your water heater.
The hot water heater should have been drained before winterizing. If it wasn't cleaned or if the sacrificial was not inspected you should do it at this time. Open the door that you use to light your water heater.