How to Flush a Tankless Water Heater Safely
A tankless water heater is not maintenance-free. Hard-water minerals can form scale inside the heat exchanger, restrict water flow, reduce performance, and potentially shorten equipment life. The safest approach is to inspect the unit regularly and flush or descale it according to the instructions for your exact manufacturer and model. Table of Contents How Mineral Buildup Affects a Tankless Water Heater How Often Should You Flush a Tankless Water Heater? Inspect the Heater Before You Start What You Need for a Typical Flush Understand the Typical Flushing Loop Step-by-Step Tankless Water Heater Flushing Process Manufacturer Instructions Differ More Than You Might Expect Signs That Scale or a Clogged Filter May Need Attention Common Flushing Mistakes to Avoid DIY or Professional Service: Which Is Better for Your Situation? How to Reduce Future Mineral-Buildup Problems Tankless Water Heater Maintenance Checklist Frequently Asked Questions Key Takeaways There is no s...