I do mine this way but it doesn't completely drain the tank. If I open the heater relief value it comes out faster.
As said above I really like the idea of pulling the anode plug as this is my yearly inspection of the anode rod. This is how I can get most water out of the tank by removing the anode plug...
Getting all of the water out of the water tank really isn't completely required as there is alot of room inside the heater for expansion if the water start icing up.
When I am doing my yearly inspection of the anode rod I also like to stick a wand sprayer up inside the tank and really clean it out good under pressure once a year as well... All kinds of junk flakes comes out with the flush...
Roy Ken
