What Is the Most Common Issue with Tankless Water Heaters and How to Fix It?

Discover the most common problem with tankless water heaters—mineral buildup—and learn maintenance tips to improve efficiency and lifespan.

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The most common issue with tankless water heaters is mineral buildup. Over time, minerals like calcium can clog the system, reducing efficiency and lifespan. Regular descaling and maintenance can help prevent this problem and ensure optimal performance.

FAQs & Answers

  1. What causes mineral buildup in tankless water heaters? Mineral buildup is mainly caused by hard water containing calcium and other minerals that accumulate inside the system over time.
  2. How often should I descale my tankless water heater? It is recommended to descale your tankless water heater at least once a year to prevent mineral clogging and maintain optimal performance.
  3. What are the signs of mineral buildup in a tankless water heater? Signs include reduced water flow, inconsistent water temperature, and decreased overall efficiency of the unit.

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