Make sure you turn off the electric and gas to the hot water tank.
Turn off the pump, relieve the water pressure, make sure water in the hot water tank is cold. Remove the anode rod at the bottom of the tank. Drain
and flush the hot water tank.
I sanitize my fresh water system by draining the fresh water tank, remove
the filter from the filter cartridge, fill fresh water tank about 1/2 full, add 1/4 cup of bleach to F/W Tank, fill tank until full. Open fresh water faucets in bath and kitchen until you smell bleach. close cold water faucets. Now open the hot water faucets in bath and kitchen until you smell bleach. Finish filling fresh water tank again, let set for at least 12 hours. Drain fresh water tank,
refill F/W tank until full for the second time. Open the cold water faucets, flush the cold lines to remove the bleach water, close. Open the hot water
faucets, flush to remove the bleach water. Drain hot water tank to remove
bleach water. Fill F/W tank until full, drain until empty. Refill F/W tank for the third time, flush all lines, drain tank again. Refill for your trip!
I only drain the Hot water tank and flush in the spring and also inspect the anode for replacement. It takes a 1 1/16" socket to remove the anode rod.
I do not use a filter in the filter canister that is installed, instead I use the
water filters purchased at walmart and change the filter every 14 days of use. WalMart now has two filters in the same package for around $25.00.(???)
seems like a long process, but it keeps my water from smelling bad.