I have a Bradford White 50 gallon hot water heater and it has been in
service for about 4 years and never been cleaned. Recently I noticed
the water coming out from the hot water faucet is yellow/brown (cold
water faucet has clear water). It is either corroded pipes or sediment
build up from the hot water tank. I tried different hot water faucet
around the house and they are all coming out with stained water so my
bet is the water heater needs to be flushed or cleaned.

Looking through the user manual I do not see a step by step procedure
for doing this but I know it is not just connecting a garden hose to the
spout and turn it on and let the water drain. There are heating
elements at the top and middle of the tank and I don't think I can just
drain the tank like that. Do I need to disconnect the power to the tank
first? Do I need to turn off the water supply into the tank? What can
I do to "stir" up the sediment while I drain it to get the most junk out
of it? Really would appreciate if someone can provide a step by step
guideline or if there is any resource online I can learn from.

Thanks in advance,

Cuse