Do you assume your tankless water heater just works forever? That silent box on your wall is vulnerable to one thing: hard water. Scale buildup is its #1 enemy, leading to inefficient operation, no hot water, and repair bills in the thousands. That’s why I made this video to show you the single most important piece of maintenance you can do: the annual descaling flush. You’ll see why this simple, $150 task is the difference between a reliable system and a financial nightmare. Click to learn how to protect your investment.