Why does hard water make this more important?

Hard water carries more dissolved minerals that settle out as sediment. Homes on well water or in areas with harder municipal water typically need more frequent flushing than the standard annual schedule.

Can I flush my water heater myself?

It’s possible for a comfortable DIYer, but the process involves gas or electrical shutoffs, and older valves can fail during the process. Many homeowners prefer to have it handled professionally.