How to Flush a Tankless Water Heater By HowToLou in WorkshopRepair2,17851Save PDFFavoriteIntroduction: How to Flush a Tankless Water HeaterBy HowToLouFollowMore by the author: Calcium and lime can build up inside tankless water heaters. They should be flushed once or twice a year with vinegar. This video shows how to do it.
