Gas water heater maintenance tips: If you have a gas water heater, you want to look at when it was installed. If your heater is in excess of seven years old, there are a few things you can do. But if it's under seven years old, here's what you can do. You want to be able to come down to your water heater. This is a tank, it's a vessel. Any kind of water that comes into this tank, the heavier parts, the minerals, the sediment, they're all going to go to the bottom of this tank. And in this case, the bottom of this tank is around here. That's where all the sediment is going to collect. So I explained before about flushing the water heater out. The reason why you want to let this tank drain down all on its own, without any water coming in, is so that you can get down to the mineral part. As you turn the cold water on, it's going to kick up the minerals, it's going to flush them out through the hose. If you were able to do that, take the deposits off the bottom of the tank, I don't even know how long you'd add to the water heater life but I can only imagine it would be years and not days.