Hi, this is my first post here but I'm sure it won't be my last. Gas hot water heater started leaking. Repairman shows up turns off gas and water going to heater and will be back in the morning to replace heater. ( It is Sunday ) He also drained the heater but it did not stop draining at all. Even though no water was entering the heater through the cold water inlet it continued to drain. Also noticed when I turned on any hot water faucet in the house cold water came out. I'm guessing that there is a crossed connection somewhere. Any help would be appreciated.