Run the hose end to a basin where you can collect hot water.
Cleaning gas water heater.
Once the water has drained close the valve.
Next unthread the nuts or screws securing the burner plate itself.
Open a hot water tap close.
Take a water hose and attach it to the drain valve.
If there is a thick layer of dust or dirt on your hot water heater use a shop vac to take off as much dust as possible.
Remove the temperature pressure release valve and screw in the vacuum adapter.
Turn off the hot water heater.
Allow the tank to drain completely flushing out flakes of mineral deposits along with the cooled water.
How to clean a hot water heater.
Shut off the gas or electricity to the water heater and open a hot water faucet and let it run full blast for about 10 minutes to reduce the water temperature in the tank.
Open the drain valve at the bottom of the hot water heater tank.
Before you begin be sure to unplug the water heater s power cord and shut off the gas supply.
Attach the shop vacuum hose and fire up the vacuum.
Use the crevice.
Wipe the hot water heater down with a dry cloth to get rid of as much.