On 2/16/2016 7:04 PM, SeaNymph wrote:
I'm not sure if its necessary, just wondering what others think.

Yes, at least once a year. Twice is better.

And is this something that I can do or is it best left to the
professionala?


Many HO do their own water heater drains. You
can likely find instructions on the web. In
my case, the WH drain points out the cabinet
door, out to the ground. Once or so each year
I open the valve, and let the water and
sediment blow out to the ground.

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