1 month is my guide. If we will be back out in a month, I leave it. Well, only if it has city water in it. I also sanitize the tank and lines twice a year though.
Side question- when sanitizing the lines, do you also push the bleach/ water mix into the water heater? I don't think I have done that.
I understand what you're saying and it makes sense. But my trailer has two "low point" drains, one for the hot and the other for cold. I only opened the hot drain, not the cold. Would this still cause sentiment problems?
The hot connection is at the top of the tank so it will not drain it.
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