Hi, I need to drain my water heater and am a bit confused.
First off, there are no directions on the outside of the water heater.
It is about 7 years old.
I did a search online and found many sites that explain now to do it,
but my question is some sites say to open the pressure relief valve, and
some sites say to leave it alone......Can someone give me any advice on
which method to follow.....Thanks!!