This Video shows you how to install a gas water heater for your house. If you have an old gas water heater that doesn’t work anymore, watch this video to see what is involved in replacing a gas water heater yourself. Installing a gas water heater is a job you can do yourself if you follow the instructions. This video shows you how to replace a gas water heater with a new more efficient gas water heater. The new gas water heater will save me money because it uses less gas. When you are buying a gas water heater, you should also buy new water and gas lines To replace the old water and gas lines which may be old and brittle. It’s best to be safe and replace all of them while you are replacing your gas water heater. This video will show you how to replace your gas water heater with a new one.
Here's where to get a gas valve shutoff tool.
https://amzn.to/3p5UfDx