Question:   Will tankless water heaters work with hard water?
Answer:   Tankless water heaters are extremely resistant to hard water because they do not store hot water, so minerals have less of an opportunity to settle out of the water column and build up inside the heat exchanger. Although many heaters are currently working well without any water treatment, we recommend that homeowners in areas with frequent hard water problems install a water softener or a whole house filtration system at the water line before the heater. This should lengthen its lifespan as well as the time between servicing. In areas with exceptionally hard-water conditions, the heat exchanger inside the unit may require periodic flushing to remove built-up scale. Keeping the temperature low also helps to prevent scale buildup in severe, hard-water conditions.
You can find Whole House Filtration systems, Water Softeners and De-Scaler Kits on our website. Please contact our sales department at 866-232-8238 if you need assistance to locate these items.