I'm trying to shut off water coming from my hot water heater. I currently have the water shut off to the entire house due to a shower repair that went awry (hot water flows like a shower even though the faucet is turned off). The plumber I am waiting on suggested turning the water off at the hot water heater, so that I can turn the main water back on and still have use of the cold. He made it sound like no big deal, but I am unsure of what I am doing. I am wanting to do this because it may be at least a couple days before the repair can be done. So, I guess my question is, what is the easiest way to do this? Do I have to turn off the electric supply? Can I just turn a valve that stops the water? My hot water heater is electric and in the basement of my ranch home.
Side question, I have lived here several years and never drained the hot water heater. Should I do this as routine maintenance? Thank you!