The first step for replacing the water heater is to drain it. Once you have drained it then, you will find a valve which opens the tank’s bottom. Common problems are corrosion that might seal it closed. It is also possible to lose earthquake straps. Make sure you do not lose these. They are screwed to the studs that support the building. You want to ensure that the water heater is working properly within your house. Also, make sure you get your vents checked. It could be necessary to modify to vent the heat and exhausts to the ceiling. Certain water heaters can automatically illuminate. Water heaters can be complicated. Keep watching this video for more details. a8nwnyyhku.