For homes built on a slab, your water main shut-off valve is likely close to your water heater tank —check underneath it or at the top. Your house water valve should also be documented on your ...

Remember, the water will be hot. Step 5: Once the drain hose is in place, a faucet is open and the water supply into the tank is shut off, open the drain valve and let the water drain out of the tank.

One reason you might need to replace the main shut-off valve is that sometimes sink and toilet supply lines can spring leaks ...

After the valve, you will install a shut-off ball valve. This combination allows you to divert the water from going back into the water heater and have it exit out of the valve along with any air.