I replaced my water heater 2 years ago, this weekend I plan on flushing it. I have read steps anywhere from turn off the gas and stop the water line, to just open the spigot at the bottom and fill up a bucket a couple times. How effective is just the spigot method without turning off the water supply or shutting off the gas supply and burner? I have a 4 gallon bucket I plan to use and just as a test I opened the spigot and was surprised how powerful the water flow was.
Can I do any damage by just draining the water via the spigot? 4 gallons at a time and not a continuous run? Is it effective to do this or am I just wasting hot water?