Hard water kills tankless water heaters! This home had extremely hard well water, and the minerals built up so quickly that the existing tankless unit failed far sooner than it should have. We replaced the damaged heater and installed a maintenance‑free scale prevention filter on the incoming water line. This filter conditions the water before it enters the tankless unit, stopping scale from forming inside the heat exchanger. With the new heater and protective filter in place, the home now has reliable hot water and a system that will run more efficiently and last much longer. This upgrade gives the customer peace of mind and protects their investment for years to come.